PS2 Emulation

Description

Simplified block diagram of a PS2
source

Emulation of Playstation 2 is currently handled by 3 kind of emulators. CECH-A/B models use ps2_emu.self able to use built-in PS2 hardware (EE/GS/Rambus memory), and have best compatibility. CECH-C/E use ps2_gxemu, this emulator use physical Graphic Synthesizer found in this ps3 model, but Emotion Engine is fully emulated here, also there is no Rambus memory. All other models emulate PS2 thru fully software based ps2_netemu used for ps2 classics, and hacked now to use decrypted ISO files. Earlier before Sony provided ps2 classics on PS Store there was another soft only emulator strongly based on ps2_gxemu. It was called ps2_softemu, and had support for original PS2 CDVD. Only emulator not able to run physical discs is ps2_netemu.

Emulators are self files, but not typical one. Emulators are not truly PS3 Game OS elf executables, but Guest OS'es running on LV1 of PS3. This mean that LV2, or more friendly Game OS is unloaded before emulator is loaded. This also mean that while emulators are running we can't call any LV2 function. Also LV1 syscalls are limited to call from all emulators, but can be fully unlocked.

All emulators use built-in stripped developement version of PS2 BIOS with disabled debug functions that can affect some games. This is done because some games print debug info on screen when found that are run on dev bios. Bios between ps2_emu, and ps2_gxemu/ps2_netemu are different. Ps2_emu BIOS is able to run only on ps2emu version of emulator due to RDRAM check.

PS3 models without Emotion Engine unit use "SPE-compatible SIMD graphics-rounding mode for VMX/Altivec Instructions" for FPU, and VU0 emulated floats calculations. This is set on emulator init by HV call 97 with param 1. VU1 actually run at SPE core so no compatibility mode need (or can) to be set. SPE compatible mode for PPE mean that rounding mode is set as round to zero, denormals are treated as zero, and there are no infinities or NaNs. So theoretically what PS2 FPU/VU was originally. Although SPE and PPE SPE compatibility mode is still inaccurate comparing to PS2, because Sony decided to cut off 2 guard bits from calculations on PS2. Probably because there was no need for round and sticky bits (no Nan/Inf, one round mode, etc.). Additionally float divide algorithm is custom and not fully understood up to this day. Good example here are TriAce games, or Castlevania COD where SPE calculation is wrong by 1 bit making games unplayable without patch. This are PS2 math algo specific inaccuracies in FPU/VU implementation that are not present on any other hardware.

Note:

• not available in early Tool/DECR and Debug/DEX firmwares. But available in AV TOOL firmware since 1.00
• Emulation is based on a SCPH-50000/SCPH-20401 Playstation 2 Model.
• Introduction to PlayStation2 Architecture.pdf
• ps2tek docs - https://psi-rockin.github.io/ps2tek/

PS2 emulators workload comparison

PS2 (GS+EE)
Core	Job	Source	Notes
SPU0	Spu2	SPU Assembly	Spu2 emulator
SPU1	Sif	SPU Assembly	Some kind of bridge to IOP, since SIF is part of EE hardware.
SPU2	Timer	SPU Assembly	IOP timers.
SPU3-6	-	-	Unknown, emulator seems to not use them
SPU7	-	-	Unavailable: Factory disabled SPU
PPU:0	PS2-Devices	C++ and PPU ASM
PPU:1	-	-	unused?
PS2-EE	Emotion Engine	Hardware CXD2953AGB	Only in CECHAxx and CECHBxx PS3 models with COK-001 motherboard
PS2-GS	Graphic Synthesizer
PS2_GX
Core	Job	Source	Notes
SPU0	IOP	SPU ASM	I/O Processor (originally PS1 main processor)
SPU1	DMA	SPU ASM	Emotion Engine DMA Controller
SPU2	Isolation	C++ Raw SPU	Used for MagicGate Encryption and others (?)
SPU3	IPU	SPU ASM	Image Processing Unit
SPU4	GFIF	SPU ASM	GIF?
SPU5	PS2-SPU2	C++	Sound processing unit 2 (originally SPU from PS1) about 50% load average
SPU6	VU1	SPU ASM	Vector Unit 1
SPU7	-	-	Unavailable: Factory disabled SPU
PPU:0	PS2-Devices	C++ and PPU ASM
PPU:1	Emotion Engine	C++ and PPU ASM
PS2-GS	Graphic Synthesizer	Hardware CXD2972GB	Only in CECHCxx PS3 models with COK-002 motherboard
PS2 Software
Core	Job	Source	Notes
SPU0	IOP	SPU ASM	I/O Processor (originally PS1 main processor)
SPU1	SPU2	SPU ASM	Sound Processing Unit 2
SPU2	VU1	SPU ASM	Vector Unit 1
SPU3	EEDMA	SPU ASM	Emotion Engine DMA Controller
SPU4	GSEGIF	SPU ASM	GIF
SPU5	GSE	SPU ASM
SPU6	IPU	SPU ASM	Image Processing Unit
SPU7	-	-	Unavailable: Factory disabled SPU
PPU:0	PS2-Devices	C++ and PPU ASM
PPU:1	Emotion Engine	C++ and PPU ASM
PS2 Netemu
Core	Job	Source	Notes
SPU0	IOP	SPU ASM	I/O Processor (originally PS1 main processor)
SPU1	SPU2	SPU ASM	Sound processing unit 2 (originally SPU from PS1)
SPU2	VU1	SPU ASM	Running VU1 code translated previously on PPU side.
SPU3	EEDMA	SPU ASM	Partial DMAC, mostly channels 1/2, and VU1 CODE r/w. Also process VIF1 commands (incl. Unpacks).
SPU4	FE	SPU ASM	GIF unit, processing GIF tags, handling GS internal registers, etc.
SPU5	BE	SPU ASM
SPU6	IPU	SPU ASM	EE Image Processing Unit
SPU7	BE		Factory disabled SPU. Emulator set name for JOB, but never try to start/set it as active.
PPU:0	-	-
PPU:1	-	-

Note: Apparently ps2_gxemu SPU layout changed at some point (maybe ps2_emu too), and above table is not accurate for latest emu versions.
0-6 layout for ps2_gxemu currently look like this: IOP, SPU2, IPU, VU1, EEDMA, GSGIF, UNK(probably isolation).

PS2 Emulator Types and Revisions

PS2 Emulator Types and Revisions

ps2_emu.elf (decrypted)

Firmware	Bytes	MD5	Timestamp	Rev	Comm
1.00 AV	8 258 328	19DC714F1109FF772BEF5B00C4AF2CF7	06/10/04/12:15	?	?
1.02	8.258.504	FF9C1C465DF6F501E418602A488CBD40	06/10/21/00:01	?	?
1.10	8.254.568	72EFF1FB3E9A175253687634B698CC91	06/11/09/06:08	?	?
1.11	8.255.192	98BCC06ACA07971DFE57A126000B6DEE	06/11/21/17:54	?	?
1.30	8.787.800	3F1E943139329E8AD5461FA43DB4DD0E	06/12/05/05:33	same	?
1.30 AV	8.787.800	F2CE2D8CF41FF38E586AE7A91A13980C	06/12/05/07:15
1.31	8.790.440	CF13D31F202DA3C55009C06B6A2B27A0	06/12/12/18:47	?	?
1.32	8.794.664	6DD631EEDE321AC7F59C85BC6AC0DCA9	06/12/18/05:54	?	?
1.50	8.805.912	81B38EE824E460385B44FADE78CAA5DC	07/01/18/22:52	?	?
?	?	?	?	?	?
1.70	8.854.680	CEACBB22EB450C5CC587C193CE7BBE91	07/04/16/16:11	?	?
?	?	?	?	?	?
1.90	5.190.280	88B26FDC910B8633613BC366D39F439D	07/07/21/06:44	?	?
?	?	?	?	?	?
2.10	5.223.112	CB1924E7163F01EA2DD3965918BACCE4	07/12/15/05:29	?	?
?	?	?	?	?	?
3.40	5.267.128	916603300F798139456FCF1A40384A97	10/06/23/15:44	?	?
?	?	?	?	?	?
3.66	5.267.112	BE20230D091F5C8AB8364607D49A6992	11/06/16/03:51	same	?
~		Any
3.74		5B2CA12EE08298094177667C681BC75F	11/10/25/00:30
4.00	5.272.152	08516640BE636F3E633C0416F09EF941	11/11/22/03:10	same	?
4.01		61ECD51036247547736274EEB52FA4C4	11/12/23/01:02
4.10	5.272.008	88CFD465D2F412C075C69531278BB3A9	12/02/05/23:08	same	?
4.11		2B45F72675B844C08E1735059F9826E3	12/02/11/07:05
4.20	5.272.264	23D3F9909EBA3F1AB0D757850C5D6809	12/06/15/02:01	same	?
4.21		110F0D01B39193F1A2031BBC7ADBBC2F	12/06/30/01:06
4.23 S	5.271.912	783201F2541117E545B8E01B3A0B1955	12/07/31/00:17	?	?
4.25	5.272.264	C895EAA3F79BA2040D6C828A5B811139	12/09/07/06:55	?	?
?	?	?	?	?	?
?	?	?	?	?	?
?	?	?	?	?	?
Abandoned (last revision)
4.78	5.274.984	ABC9228FCEA0E779E3157CA546A1FD02	15/12/17/01:14	same	?
~		Any
4.89		7523DE6D38B13B9C4B9F72419C50D4A7	22/02/04/14:35

 · Decrypted (elf): changes every firmware version
 · Build label: yes, with timestamp, search for ps2ver:
 · Target Firmware: no/unknown
 · Revision: unknown

ps2_gxemu.elf (decrypted)

Firmware	Bytes	MD5	Rev	Comm
1.00 ~ 1.32	No
1.50	6.106.040	BACC208C8A793F82D71F85B02DD2D318	?	?
?	?	?	?	?
1.70	6.763.336	B70A15512EF9FA74B798A5E9241FE571	?	?
?	?	?	?	?
1.90	6.802.720	B9E2CC8D72779650D9B500B75AE552EB	?	?
?	?	?	?	?
2.10	6.822.576	E34C4EB587CCE44AB4B92D848DC391A7	?	?
?	?	?	?	?
3.40	6.866.424	80091C68E2F8D2385A2125AB38085A3C	?	?
?	?	?	?	?
3.66 ~ 3.74	6.867.024	E04FA0FE63A968C53AE366B3AAD0141A	?	?
4.00 ~ 4.11	6.871.848	D5E97019132848203970213FF96F2AAB	?	?
4.20 ~ 4.25	6.872.128	678F16283CAA8CFBC03A5FBCB6ABA41E	?	?
?	?	?	?	?
?	?	?	?	?
?	?	?	?	?
Abandoned (last revision)
4.78 ~ 4.89	6.874.848	C7681420A7B3A2A6E3BF89F4A12A3DD6	?	0x2B ?

 · Decrypted (elf): changes every emu revision
 · Build label: no/unknown
 · Target Firmware: no/unknown
 · Revision: unknown

ps2_softemu.elf (decrypted)

Firmware	Bytes	MD5	Rev	Comm
1.00 ~ 1.82	No
1.90 ~ 1.94	6.142.080	812330515D01291488315BBE7E0F339E	11065	?
1.97	?	?	?	?
2.00 ~ 2.10	6.143.048	C0964350E3E8EA80EB5C7CB34901E9DE	11830	?
2.16	?	?	?	?
? ~ ?	?	?	?	?
3.10	?	?	?	?
3.15	?	?	12840	?
3.16	?	?	?	?
? ~ ?	?	?	?	?
3.40	6.146.424	97C33E83E14399EED1BD4F5351443E1C	?	?
3.41 ~ 3.65	?	?	13474	?
3.66 ~ 3.71	6.147.120	513B9160AD8C199CAEFC82C1B7D9D794	15435	?
3.72 ~ 4.01	6.146.992	1232D3EEB48F301CBB61D76EB3046111	15529	?
4.10 ~ 4.91	No

 · Decrypted (elf): changes every emu revision
 · Build label: no/unknown
 · Target Firmware: no/unknown
 · Revision: unknown

ps2_netemu.elf (decrypted)

Firmware	Bytes	MD5	Rev	Comm
1.00 ~ 3.66	No
3.70 ~ 3.71	11.036.504	0D021D18CC63DDBDA530A93C41ABF865	15686	0x41
3.72	11.036.504	38EABD7E5F998BC04922CA3B70211208	15842
3.73 ~ 3.74	11.036.504	F21110A93BBEA416749283E6BF3D3C6B	15936
4.00 ~ 4.01	11.033.048	F770442DFA626282B01FEBE3DDFFC477	16195
4.10 ~ 4.11	11.033.216	8F0885BCC80A3617E654BB6151F4F718	16361
4.20 ~ 4.23	11.033.728	8EB5492E453C50B6D728E7999A57A689	16604	0x43
4.25 ~ 4.26	11.033.728	E38059300E31432A62967770C3E99EF6	16740
4.30 ~ 4.31	?	?	16808	0x45
4.40 ~ 4.41	?	?	16916	0x46
4.45 ~ 4.46	?	?	17041	0x48
4.50	?	?	17179	0x4A
4.55	?	?	17277	0x4D
4.60 ~ 4.76	?	?	17314
Abandoned (last revision)
4.78 ~ 4.89	10.442.536	8B2DBD1AAD22A0EDCF9C867A1A1FB94D	17495	0x50

 · Decrypted (elf): changes every emu revision
 · Build label: yes, without timestamp, search for build r
 · Target Firmware: included in the build label
 · Revision: yes, one time, and included in the build label

• Alternative tables

ps2_emu.self

FW version	TOC	Notes
1.00 AV	0x7C3150
1.02	0x7C31F0
1.10	0x7C2168
1.11	0x7C23C8
1.30	0x8442E8
1.30 AV	0x8442E8
1.31	0x844C98
1.32	0x845CA0
1.50	0x848728
1.90	0x4D7ED8
3.66 - 3.74	0x4E9A20
4.00 - 4.01	0x4EADB8
4.10 - 4.11	0x4EAD28
4.20 - 4.21	0x4EAE30
4.23	0x4EACE0
4.25	0x4EAE30	Reverted to 4.20 - 4.21 version?
4.78 - 4.82	0x4EB8C0

ps2_gxemu.self

FW version	TOC	Notes
1.50	0x5BDFC8
1.90	0x666C78
3.66 - 3.74	0x6766B8
4.00 - 4.11	0x677990
3.66 - 3.74	0x677AA8
4.78 - 4.82	0x678548

ps2_softemu.self

FW version	TOC	Notes
1.90	0x5C7B10
2.50	0x5C7ED8
3.41	0x5C8C00
3.66 - 3.71	0x5C8EC0
3.72 - 4.01	0x5C8E40

ps2_netemu.self

FW version	TOC	Notes
3.73 - 3.74	0x7D8B00
4.00 - 4.01	0x7DA200
4.10 - 4.11	0x7DA180
4.20 - 4.25	0x7DA500
4.78 - 4.83	0x751280

General observations regarding PS2 Classics emulator (ps2_netemu)

• Virtual memory cards are per title based, but apparently run through the current memory card system. The module used to manage memory cards is: vmc_savedata_plugin.sprx - Using a regular memory card that has been renamed result in a "The save data is corrupt (8XXXXXXX) error"
• Loads an epilepsy warning before PS2 logo (PS button menu appears during epilepsy warning if controller is synced)
• Does not support online functionality of PS2 titles (network configuration utility inside Full Spectrum Warrior claims no network adaptor has been found, same with Syphon Filter: The Omega Strain).

- Only file that is needed in the folder for PS2 Classics is "iso.bin.enc". Removing the manuals/DXT files will cause the game to boot IMMEDIATELY to the PS2 logo upon switching to 720p/starting PS2 LPAR.

LIMG Segment

The ISO.BIN.ENC has a block of 0x4000 bytes added at the end codenamed "LIMG" that works as a descriptor for the ISO structure

Offset	Length	Name	Example	Description
0x00	0x4	magic	LIMG	Logical IMaGe (layout) ?
0x04	0x4	img_type	0x00000001	1=DVD 2=CD
0x08	0x4	sector_count	0x00279890	sector_count = img_size / sector_size
0x0C	0x4	sector_size	0x0000800	sector_size = img_size / sector_count 0x800=DVD (Mode1/2048) 0x930=CD (Mode2/2352)
0x10	0x3FF0	padding	0x00000000...

folder/file layout

(in this example GTA San Andreas Classic)

[NPUD20946]
       [USRDIR]
             [CONTENT]
                    001.dxt
                    002.dxt
                    003.dxt
                    004.dxt
                    005.dxt
                    006.dxt
                    007.dxt
                    008.dxt
                    009.dxt
                    010.dxt
                    011.dxt
                    012.dxt
                    013.dxt
                    014.dxt
                    015.dxt
                    016.dxt
                    017.dxt
                    Others.dxt
                    Manual.idx
             [SAVEDATA]
                    SCEVMC0.VME
                    SCEVMC1.VME
             CONFIG
             ISO.BIN.EDAT
             ISO.BIN.ENC
       PS3LOGO.DAT
       PARAM.SFO
       ICON0.PNG
       PIC0.PNG
       PIC1.PNG
       PIC2.PNG

Virtual PS2 (emulated machine) usage and features

Video Modes

Note: Real PS2 : http://users.neoscientists.org/~blue/ps2videomodes.txt

Video Modes
----.-----------.---------------.-----------.-----------.
 No | Name      | Resolution	| fV(Hz)    | fH(kHz)   |
----+-----------+---------------+-----------+-----------|
  0 | NTSC-NI   |  640x240(224) | 59.940    | 15.734    |
  1 | NTSC-I    |  640x480(448) | 59.820    | 15.734    |
  2 | PAL-NI    |  640x288(256) | 50.000    | 15.625    |
  3 | PAL-I     |  640x576(512) | 49.760    | 15.625    |
  4 | VESA-1A   |  640x480      | 59.940    | 31.469    |
  5 | VESA-1C   |  640x480      | 75.000    | 37.500    |
  6 | VESA-2B   |  800x600      | 60.317    | 37.879    |
  7 | VESA-2D   |  800x600      | 75.000    | 46.875    |
  8 | VESA-3B   | 1024x768      | 60.004    | 48.363    |
  9 | VESA-3D   | 1024x768      | 75.029    | 60.023    |
 10 | VESA-4A   | 1280x1024     | 60.020    | 63.981    |
 11 | VESA-4B   | 1280x1024     | 75.025    | 79.976    |
 12 | DTV-480P  |  720x480      | 59.940    | 31.469    |
 13 | DTV-1080I | 1920x1080     | 60.000    | 33.750    |
 14 | DTV-720P  | 1280x720      | ??        | ??        |
----^-----------^---------------^-----------^-----------'

Memory Mapping

ps2netemu

Name	ea	lpar2(netemu 4.81)	size	flags	lpar1(lv1 4.81)
text	0x0	0x3D00000	0x300000( 3 MB)	0x8000000000000003 0000000000000003	0x7D00000
ro_work	0x300000	0x300000	0x500000( 5 MB)	0x0000000000000003 0000000000000003	0x4300000
rw_work	0x800000	0x800000	0x2A00000( 42 MB)	0x0000000000000001 0000000000000003	0x4800000
negmem	0x1FFF0000	0x3210000	0x10000( 64 KB)	0x0000000000000001 0000000000000000	0x7210000
ee_ram	0x100000000	0x64000E000000	0x2000000( 32 MB)	0x0000000000000001 0000000000000000	0x3C00000 - 0x3F00000, 0x8000000 - 0x9B00000
ee_jit_code	0xD00000000	0x680024000000	0x3000000( 48 MB)	0x8000000000000001 0000000000000003	0xBC00000 - 0xEB00000
vu0_jit_code	0xD08000000	0x580000800000	0x400000( 4 MB)	0x8000000000000001 0000000000000003	0x900000 - 0xC00000
vu0_jit_data	0xD0C000000	0x3700000	0x400000( 4 MB)	0x0000000000000002 0000000000000003	0x7700000
eeram_jit_lut	0xE00000000	0x640010000000	0x2000000( 32 MB)	0x0000000000000001 0000000000000003	0x9C00000 - 0xBB00000
eerom_jit_lut	0xE0FC00000	0x580000C00000	0x400000( 4 MB)	0x0000000000000001 0000000000000003	0xD00000 - 0x1000000
ee_dbg_ram	0x90FFF8000	0x64000E078000	0x8000( 32 KB)	0x0000000000000001 0000000000000000
iop_ram	0x400000000	0x3300000	0x200000( 2 MB)	0x0000000000000001 0000000000000000	0x7300000
iop_rom	0x50FC00000	0x580001000000	0x400000( 4 MB)	0x0000000000000001 0000000000000002	0x1100000 - 0x1400000
iop_spad	0x50F800000	0x3220000	0x10000( 64 KB)	0x0000000000000001 0000000000000002	0x7220000
spu2_ram	0x600000000	0x3500000	0x200000( 2 MB)	0x0000000000000001 0000000000000000	0x7500000
spu2_ram2	0x600200000	0x3500000	0x200000( 2 MB)	0x0000000000000001 0000000000000000	0x7500000
spu2_pcm	0x1000000000	0x3230000	0x10000( 64 KB)	0x0000000000000001 0000000000000000	0x7230000
ee_spr_lo	0x700000000	0x3201000	0x2000( 8 KB)	0x0000000000000001 0000000000000000	0x7201000
ee_spr	0x800000000	0x3203000	0x6000( 24 KB)	0x0000000000000001 0000000000000000	0x7203000
ee_vu0_dmem0	0x301004000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
ee_vu0_dmem1	0x301005000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
ee_vu0_dmem2	0x301006000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
ee_vu0_dmem3	0x301007000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
ee_rom	0x30FC00000	0x580001000000	0x400000( 4 MB)	0x0000000000000001 0000000000000001	0x1100000 - 0x1400000
vrc	0xC00000000	0x600005000000	0x1000000( 16 MB)	0x0000000000000001 0000000000000000	0x1500000 - 0x2400000
/dev/zero	0x4000000000	0x3240000	0x10000( 64 KB)	0x0000000000000001 0000000000000001	0x7240000
dma_vu0_dmem0	0x4001004000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
dma_vu0_dmem1	0x4001005000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
dma_vu0_dmem2	0x4001006000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
dma_vu0_dmem3	0x4001007000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
imm_vu0_dmem0	0x30000000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
imm_vu0_dmem1	0x30001000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
imm_vu0_dmem2	0x30002000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
imm_vu0_dmem3	0x30003000	0x3200000	0x1000( 4 KB)	0x0000000000000001 0000000000000001	0x7200000
SGSXdr	0x1904000000	0x64000C000000	0x1700000( 23 MB)	0x0000000000000001 0000000000000000	0x2500000 - 0x3B00000
iopTrace	0x1400000000	0x3250000	0x10000( 64 KB)	0x0000000000000001 0000000000000000	0x7250000

SPE local storage

Emulator access SPE LS by accessing special addresses. Mapping as follows:

SPE Num.	SPE task	Address in netemu	address in SPE
0	IOP	0x40000000 - 0x4003FFFF	0x0 - 3FFFF
1	SPU2	0x40080000 - 0x400BFFFF	0x0 - 3FFFF
2	VU1	0x40100000 - 0x4013FFFF	0x0 - 3FFFF
3	EEDMA	0x40180000 - 0x401BFFFF	0x0 - 3FFFF
4	FE	0x40200000 - 0x4023FFFF	0x0 - 3FFFF
5	BE	0x40280000 - 0x402BFFFF	0x0 - 3FFFF
6	IPU	0x40300000 - 0x4033FFFF	0x0 - 3FFFF

Additionally, emulator access SPU directly with those addresses.

Address	Channel	Channel description	Access type	Notes
0x44004	SPU_Out_Mbox	SPU Outbound Mailbox Register	Read only	Used to read 32 bits of data from the corresponding SPU outbound mailbox queue. Outbound Mailbox Register has a corresponding SPU Write Outbound Mailbox Channel for writing data into outbound mailbox queue.
0x4400C	SPU_In_Mbox	SPU Inbound Mailbox Register	Write only	Used to write 32 bits of data into the corresponding SPU inbound mailbox queue. Inbound mailbox queue has a corresponding SPU Read Inbound Mailbox Channel for reading data from the queue.
0x44014	SPU_Mbox_Stat	SPU Mailbox Status Register	Read only	Contains the current In_Mbox/Out_Mbox/Out_Intr_Mbox count of the mailbox queues in the corresponding SPE.
0x4401C	SPU_RunCntl	SPU Run Control Register	Read/Write	Used to start and stop the execution of instructions in the SPU. The SPU can dynamically change the state of the Run Status bit (that is, SPU_Status[R]).
0x44024	SPU_Status	SPU Status Register	Read only	Used to report the status (state) of an SPU. Emulator use it mostly to check if SPU is running (bit31).
0x44034	SPU_NPC	SPU Next Program Counter Register	Read/Write	Contains the address from which an SPU starts executing when the Run Control bit is set in the SPU Run Control Register. Used in function that start SPU programs, and in interrupts handlers, plus in few other places.
0x5400C	SPU_Sig_Notify_1	SPU Signal Notification 1 Register	Read/Write	Used to write data that can be read in SPU_RdSigNotify1 channel corresponding SPE.
0x5C00C	SPU_Sig_Notify_2	SPU Signal Notification 2 Register	Read/Write	Used to write data that can be read in SPU_RdSigNotify2 channel corresponding SPE.

Address = SPU base + Address. For example, IPU SPU is mapped to 0x40300000 so accessing SPU_Sig_Notify1 will be done by read/write to 0x4035400C.

PS2 Memory and Hardware Mapped Registers Layout

EE Virtual/Physical Memory Map
  KUSEG: 00000000h-7FFFFFFFh User segment
  KSEG0: 80000000h-9FFFFFFFh Kernel segment 0
  KSEG1: A0000000h-BFFFFFFFh Kernel segment 1
  KSSEG: C0000000h-DFFFFFFFh Supervisor segment
  KSEG3: E0000000h-FFFFFFFFh Kernel segment 3
  
  Virtual    Physical
  00000000h  00000000h  32 MB    Main RAM (first 1 MB reserved for kernel)
  20000000h  00000000h  32 MB    Main RAM, uncached
  30100000h  00100000h  31 MB    Main RAM, uncached and accelerated
  10000000h  10000000h  64 KB    I/O registers
  11000000h  11000000h  4 KB     VU0 code memory
  11004000h  11004000h  4 KB     VU0 data memory
  11008000h  11008000h  16 KB    VU1 code memory
  1100C000h  1100C000h  16 KB    VU1 data memory
  12000000h  12000000h  8 KB     GS privileged registers
  1C000000h  1C000000h  2 MB     IOP RAM
  1FC00000h  1FC00000h  4 MB     BIOS, uncached (rom0)
  9FC00000h  1FC00000h  4 MB     BIOS, cached (rom09)
  BFC00000h  1FC00000h  4 MB     BIOS, uncached (rom0b)
  70000000h  ---------  16 KB    Scratchpad RAM (only accessible via virtual addressing)

IOP Physical Memory Map
  KUSEG: 00000000h-7FFFFFFFh User segment
  KSEG0: 80000000h-9FFFFFFFh Kernel segment 0
  KSEG1: A0000000h-BFFFFFFFh Kernel segment 1
  
  Physical
  00000000h  2 MB     Main RAM (same as on PSX)
  1D000000h           SIF registers
  1F800000h  64 KB    Various I/O registers
  1F900000h  1 KB     SPU2 registers
  1FC00000h  4 MB     BIOS (rom0) - Same as EE BIOS
  
  FFFE0000h (KSEG2)   Cache control

Additional Memory
  4 MB   GS VRAM (used for framebuffer, textures, zbuffer, etc)
  2 MB   SPU2 work RAM - quadrupled from PSX's SPU
  8 MB   Memory card


Hardware Mapped Registers
EE Map
EE Timers
  100000xxh        Timer 0
  100008xxh        Timer 1
  100010xxh        Timer 2
  100018xxh        Timer 3
Image Processing Unit (IPU)
  10002000h 8h     IPU Command
  10002010h 4h     IPU Control
  10002020h 4h     IPU bit pointer control
  10002030h 8h     Top of bitstream
  10007000h 10h    Out FIFO (read)
  10007010h 10h    In FIFO (write)
Graphics Interface (GIF)
  10003000h 4h     GIF_CTRL - Control register
  10003010h 4h     GIF_MODE - Mode setting
  10003020h 4h     GIF_STAT - Status
  10003040h 4h     GIF_TAG0 - Bits 0-31 of tag before
  10003050h 4h     GIF_TAG1 - Bits 32-63 of tag before
  10003060h 4h     GIF_TAG2 - Bits 64-95 of tag before
  10003070h 4h     GIF_TAG3 - Bits 96-127 of tag before
  10003080h 4h     GIF_CNT - Transfer status counter
  10003090h 4h     GIF_P3CNT - PATH3 transfer status counter
  100030A0h 4h     GIF_P3TAG - Bits 0-31 of PATH3 tag when interrupted
  10006000h 10h    GIF FIFO
DMA Controller (DMAC)
  100080xxh        VIF0 - channel 0
  100090xxh        VIF1 - channel 1
  1000A0xxh        GIF - channel 2
  1000B0xxh        IPU_FROM - channel 3
  1000B4xxh        IPU_TO - channel 4
  1000C0xxh        SIF0 - channel 5
  1000C4xxh        SIF1 - channel 6
  1000C8xxh        SIF2 - channel 7
  1000D0xxh        SPR_FROM - channel 8
  1000D4xxh        SPR_TO - channel 9
  1000E000h 4h     D_CTRL - DMAC control
  1000E010h 4h     D_STAT - DMAC interrupt status
  1000E020h 4h     D_PCR - DMAC priority control
  1000E030h 4h     D_SQWC - DMAC skip quadword
  1000E040h 4h     D_RBSR - DMAC ringbuffer size
  1000E050h 4h     D_RBOR - DMAC ringbuffer offset
  1000E060h 4h     D_STADR - DMAC stall address
  1000F520h 4h     D_ENABLER - DMAC disabled status
  1000F590h 4h     D_ENABLEW - DMAC disable
Interrupt Controller (INTC)
  1000F000h 4h     INTC_STAT - Interrupt status
  1000F010h 4h     INTC_MASK - Interrupt mask
Subsystem Interface (SIF)
  1000F200h 4h     MSCOM - EE->IOP communication
  1000F210h 4h     SMCOM - IOP->EE communication
  1000F220h 4h     MSFLAG - EE->IOP flags
  1000F230h 4h     SMFLAG - IOP->EE flags
  1000F240h 4h     Control register
Privileged GS registers
  12000000h 8h     PMODE - various PCRTC controls
  12000010h 8h     SMODE1
  12000020h 8h     SMODE2
  12000030h 8h     SRFSH
  12000040h 8h     SYNCH1
  12000050h 8h     SYNCH2
  12000060h 8h     SYNCV
  12000070h 8h     DISPFB1 - display buffer for output circuit 1
  12000080h 8h     DISPLAY1 - output circuit 1 control
  12000090h 8h     DISPFB2 - display buffer for output circuit 2
  120000A0h 8h     DISPLAY2 - output circuit 2 control
  120000B0h 8h     EXTBUF
  120000C0h 8h     EXTDATA
  120000D0h 8h     EXTWRITE
  120000E0h 8h     BGCOLOR - background color
  12001000h 8h     GS_CSR - control register
  12001010h 8h     GS_IMR - GS interrupt control
  12001040h 8h     BUSDIR - transfer direction
  12001080h 8h     SIGLBLID - signal

IOP Map
Subsystem Interface (SIF)
  1D000000h 4h     MSCOM - EE->IOP communication
  1D000010h 4h     SMCOM - IOP->EE communication
  1D000020h 4h     MSFLAG - EE->IOP flags
  1D000030h 4h     SMFLAG - IOP->EE flags
  1D000040h 4h     Control register
CDVD Drive
  1F402004h 1h     Current N command
  1F402005h 1h     N command status (R)
  1F402005h 1h     N command params (W)
  1F402006h 1h     Error
  1F402007h 1h     Send BREAK command
  1F402008h 1h     CDVD I_STAT - interrupt register
  1F40200Ah 1h     Drive status
  1F40200Fh 1h     Disk type
  1F402016h 1h     Current S command
  1F402017h 1h     S command status
  1F402018h 1h     S command params
Interrupt Control
  1F801070h 4h     I_STAT - Interrupt status
  1F801074h 4h     I_MASK - Interrupt mask
  1F801078h 1h     I_CTRL - Global interrupt disable
DMA registers
  1F80108xh        MDECin - channel 0
  1F80109xh        MDECout - channel 1
  1F8010Axh        SIF2 (GPU) - channel 2
  1F8010Bxh        CDVD - channel 3
  1F8010Cxh        SPU2 Core0 - channel 4
  1F8010Dxh        PIO - channel 5
  1F8010Exh        OTC - channel 6
  1F80150xh        SPU2 Core1 - channel 8
  1F80151xh        ??? - channel 9
  1F80152xh        SIF0 - channel 10
  1F80153xh        SIF1 - channel 11
  1F80154xh        SIO2in - channel 12
  1F80155xh        SIO2out - channel 13
  
  1F8010F0h 4h     DPCR - DMA priority control
  1F8010F4h 4h     DICR - DMA interrupt control
  1F801570h 4h     DPCR2 - DMA priority control 2
  1F801574h 4h     DICR2 - DMA priority control 2
IOP Timers
  1F80110xh        Timer 0
  1F80111xh        Timer 1
  1F80112xh        Timer 2
  1F80148xh        Timer 3
  1F80149xh        Timer 4
  1F8014Axh        Timer 5
Serial Interface (SIO2)
  1F808200h 40h    SEND3 buffer
  1F808240h 20h    SEND1/2 buffers
  1F808260h 1h     In FIFO
  1F808264h 1h     Out FIFO
  1F808268h 4h     SIO2 control
  1F80826Ch 4h     RECV1
  1F808270h 4h     RECV2
  1F808274h 4h     RECV3
Sound Processing Unit (SPU2)
  1F900000h 180h   Core0 Voice 0-23 registers
  1F900190h 4h     Key ON 0/1
  1F900194h 4h     Key OFF 0/1
  1F90019Ah 2h     Core attributes
  1F90019Ch 4h     Interrupt address H/L
  1F9001A8h 4h     DMA transfer address H/L
  1F9001ACh 2h     Internal transfer FIFO
  1F9001B0h 2h     AutoDMA status
  1F9001C0h 120h   Core0 Voice 0-23 start/loop/next addresses
  1F900340h 4h     ENDX 0/1
  1F900344h 2h     Status register
  
  ... above addresses repeat for Core1 starting at 1F900400h ...
  
  1F900760h 2h     Master Volume Left
  1F900762h 2h     Master Volume Right
  1F900764h 2h     Effect Volume Left
  1F900766h 2h     Effect Volume Right
  1F900768h 2h     Core1 External Input Volume Left
  1F90076Ah 2h     Core1 External Input Volume Right
 

Memory Allocation

ps2_netemu

Name	Size	page_log2	lpar2(netemu 4.81)	lpar1(lv1 4.81)
ra_vu0_dmem	0x1000 (4 KB)	12 (4 KB)	0x3200000	0x7200000
ra_ee_spr_lo	0x2000 (8 KB)	12 (4 KB)	0x3201000	0x7201000
ra_ee_sprx	0x6000 (24 KB)	12 (4 KB)	0x3203000	0x7203000
ra_negmem	0x10000 (64 KB)	16 (64 KB)	0x3210000	0x7210000
ra_iop_spad	0x10000 (64 KB)	16 (64 KB)	0x3220000	0x7220000
ra_spu2_pcm	0x10000 (64 KB)	16 (64 KB)	0x3230000	0x7230000
ra_nulls	0x10000 (64 KB)	16 (64 KB)	0x3240000	0x7240000
ra_itrace	0x10000 (64 KB)	16 (64 KB)	0x3250000	0x7250000
ra_iop_ram	0x200000 (2 MB)	20 (1 MB)	0x3300000	0x7300000
ra_spu2_ram	0x200000 (2 MB)	20 (1 MB)	0x3500000	0x7500000
ra_vu0_code	0x400000 (4 MB)	20 (1 MB)	0x580000800000	0x900000 - 0xC00000
ra_vu0_data	0x400000 (4 MB)	20 (1 MB)	0x3700000	0x7700000
ra_ee_rom_pc	0x400000 (4 MB)	20 (1 MB)	0x580000C00000	0xD00000 - 0x1000000
ra_ps2_rom	0x400000 (4 MB)	20 (1 MB)	0x580001000000	0x1100000 - 0x1400000
ra_vrc_mem	0x1000000 (16 MB)	20 (1 MB)	0x600005000000	0x1500000 - 0x2400000
ra_sgs_xdr	0x1700000 (23 MB)	20 (1 MB)	0x64000C000000	0x2500000 - 0x3B00000
ra_ee_ram	0x2000000 (32 MB)	20 (1 MB)	0x64000E000000	0x3C00000 - 0x3F00000, 0x8000000 - 0x9B00000
ra_ee_ram_pc	0x2000000 (32 MB)	20 (1 MB)	0x640010000000	0x9C00000 - 0xBB00000
ra_trans_code	0x3000000 (48 MB)	20 (1 MB)	0x680024000000	0xBC00000 - 0xEB00000

Controller

ID	Controller #Number	Note
1 (1-A)	1
2 (2-A)	2
3 (1-B)	3
4 (2-B)	4
5 (1-C)	5	Gamepad LED #1 + #4
6 (2-C)	6	Gamepad LED #2 + #4
7 (1-D)	7	Gamepad LED #3 + #4

Peripheral support

ps2_emu.self / ps2_gxemu.self

1. Hub
2. Mouse
3. Keyboard
4. EyeToy
5. Head Mount Display
6. Mic
7. Ascii Mic
8. Socom USB Headset
9. Usb Headset
10. Sea Mic Controller
11. Force Feedback device
12. GT Force
13. Momo Force
14. Driving Force Pro
15. G25/G27
16. Momo Racing
17. Flight Force
18. Force 3D Pro
19. Modem
20. Guncon2
21. Densya de GO! controller type 2
22. Densya de GO! Sincansen senyou controller
23. Capture Eye
24. Flight Stick
25. Flight Stick 2
26. Pop Egg
27. Trance Vibrator
28. PSP
29. Compact Flight Controller
30. Flash Memory
31. Buzz!
32. Pachi-Slot Controller Kurouto
33. Usb Adapter
34. Guncon3
35. Multi Train Controller
36. Para Para Paradise controller

ps2_netemu.self

Support for USB devices seems to be limited comparing to other available emulators. Although PS2 side of USB subsystem seems to be fully implemented. IOP emulator in SPU handle USB HW registers addresses and generate interrupt for PPU which later handle RW to mentioned registers in similar fashion to ps2_emu/ps2_gxemu. PS2 side of things can be disabled/enabled using one byte, when disabled USB writes are ignored, and USB reads return 0. Initial state is unknown. Emulator seems to accept HID controllers and use them as DS3.

Supported devices:

1. BD Remote Control
2. PLAYSTATION(R)3 Controller (Vendor ID 0x54C, Product ID 0x268),
3. Motion Controller - Move (Vendor ID 0x54C, Product ID 0x3D5),
4. Navigation Controller (Vendor ID 0x54C, Product ID 0x42F)
5. "guncon3"

Unknown:

1. Vendor ID 0xF0D (Hori), Product ID 0x4A
2. Vendor ID 0x54C (Sony), Product ID 0x5AF

Few peripherals not listed above work fine or with issues.

1. PS3 Dance Dance Revolution Dance Pad - not ps2 accessory, opposite arrows can't be pressed at the same time.
2. Pop'N Music controllers - Require PS2 to USB converter. Wrong button mappings can be fixed by remap in config file.
3. Retro-Bit Official SEGA Mega Drive USB 6-Button Controller. Mapped for PS3 already and also works with this emulator. Lacks analogue sticks and shoulder buttons.

BIOS

ps2_netemu.self

Ps2_netemu use integrated PS2 bios included in ps2netemu.elf, not additional file like in ps1_emu. In 4.81 firmware BIOS is located from 0x820A00 to 0x9F09FF (0x820900 to 0x9F08FF in fw4.50). Bios version is Developement v2.20 (22/01/2007).

Notable thing is that ps2_netemu use the same bios as ps2_gxemu, and ps2onps4. ps2_netemu not boot using ps2_emu bios because of failing RDRAM check.

Content

Files included in ps2_netemu/ps2_gxemu bios.

File	Offset in fw4.81 ps2_netemu	Offset in exported bin	Description	File type (exportable)
RESET	0x820A00	0x00	Bootstrap code for the EE and IOP.	BIN
ROMDIR	0x823180	0x2780	The ROMDIR part of the ROM image, which provides information on the location and name of files contained in the image.	BIN
EXTINFO	0x8236C0	0x2CC0	Contains the "EXTINFO" for all files in the ROM image.	BIN
SBIN	0x823D30	0x3330	Seems to be the pad controller library for the PS1 monitor.	BIN
LOGO	0x82ACD0	0xA2D0	PS1 logo?	BIN
IOPBTCONF	0x83F420	0x1EA20	Boot configuration file for the IOP, during the final phase of the IOP reset. If no UDNL module is specified, the IOP will only have a single IOP reset in the reboot process, with the modules listed in IOPBTCONF.	BIN
IOPBTCON2	0x83F510	0x1EB10	Boot configuration file for the IOP, for the first phase of the IOP reset (before UDNL is loaded).	BIN
SYSMEM	0x83F5E0	0x1EBE0	System Memory Manager.	ELF
LOADCORE	0x840800	0x1FE00	The core of IOP module loading. Provides the lowest level of IOP module loading functions. Also handles the startup of the IOP.	ELF
EXCEPMAN	0x842D80	0x22380	Exception manager.	ELF
INTRMANP	0x843960	0x22F60	Interrupt Manager. According to wisi, it is for PS mode.	ELF
INTRMANI	0x845370	0x24970	Interrupt Manager. According to wisi, it is for IOP mode.	ELF
SSBUSC	0x8471B0	0x267B0	SSBUS Controller library. The SSBUS seems to be the bus that all peripherals get connected to. It seems to have the power to control the mapping of the device registers, as well as access timing.	ELF
TIMEMANP	0x847920	0x26F20	Timer Manager (PS mode)	ELF
TIMEMANI	0x848500	0x27B00	Timer Manager (IOP mode)	ELF
DMACMAN	0x849130	0x28730	DMA Controller Manager.	ELF
SYSCLIB	0x84C830	0x2BE30	System C Library.	ELF
HEAPLIB	0x84EF90	0x2E590	Memory HEAP LIBrary (i.e. thvpool, thfpool)	ELF
THREADLIB	0x84FC90	0x2F290	Multi_Thread_Manager	ELF
VBLANK	0x858A20	0x38020	V-Blank management	ELF
IOMAN	0x8597B0	0x38DB0	IO Manager	ELF
MODLOAD	0x85B720	0x3AD20	IOP module loader.	ELF
ROMDRV	0x85DA70	0x3D070	ROM driver. Provides access to the boot ROM (rom0).	ELF
ADDDRV	0x85E960	0x3DF60	Adds support for the DVD ROM (rom1:), via ROMDRV.	ELF
STDIO	0x85EDC0	0x3D3C0	Standard I/O library.	ELF
SIFMAN	0x85F9B0	0x3EFB0	SIF manager.	ELF
SIFINIT	0x860F50	0x40550	Initializes the SIF.	ELF
EESYNC	0x861370	0x40970	For synchronizing with the EE, at the end of IOP resets. EESYNC from DNAS images are evil; they also perform a memory wipe of the region from 0x00084000 to .0x00100000.	ELF
EENULL	0x861810	0x40E10	The idle thread (id #0) module, in ps2 loaded to 0x00081FC0.	BIN
PS1ID	0x861850	0x40E50	Only found in newer boot ROMs	BIN
LIBFI	0x861860	0x40E60	Not present in the boot ROM of the SCPH-10000 and SCPH-15000.	BIN
PS1VERJ	0x861950	0x40F50		BIN
PS1VERA	0x861960	0x40F60		BIN
PS1VERE	0x861970	0x40F70		BIN
PS1VERC	0x861980	0x40F80		BIN
PS1VERH	0x861990	0x40F90		BIN
OSDSYS	0x8619A0	0x40FA0	The browser	BIN
-	0x8619B0	0x40FB0		BIN
RDRAM	0x861A00	0x41000	Provides a RDRAM test for the EE at power-on. This is run from RESET.	BIN
-	0x864190	0x43A30		BIN
EELOADCNF	0x864200	0x43D50	Contains the IOP boot configuration file for EELOAD.	BIN
SIFCMD	0x864900	0x43F00	SIF command module. Contains the SIF command and SIF RPC functions.	ELF
REBOOT	0x866B40	0x46140	The reboot service. Receives IOP reset packets from the EE, from across the SIF.	ELF
LOADFILE	0x867310	0x46910	The RPC server for MODLOAD	ELF
EECONF	0x869A70	0x49070	Loads part of the system configuration from the MECHACON EEPROM. Also configures and resets some peripherals, depending on the model version. In slimlines, and possibly on PS3 EECONF will also load the MAC address.	ELF
-	0x86A9F0	0x49FF0		BIN
IOPBOOT	0x86AA00	0x4A000	IOP bootup program	BIN
-	0x86BB60	0x4B160		BIN
TBIN	0x86C200	0x4B800	The PS1 monitor program. Seems to be the PS1 BIOS. This is started by RESET, when the IOP is in PS1 mode.	BIN
XSHA1	0x87A170	0x59770	sha1 - this only present in PS3. It is used as additional antipiracy check. It seems that it calculate disc main elf checksum and compares it with some database. Config related?	ELF
XLOADFILE	0x87B140	0x5A740	Updated module	ELF
SIO2MAN	0x87E1F0	0x5D7F0	SIO2 manager. Provides access to the SIO2 interface.	ELF
-	0x87FE20	0x5F420		BIN
BNNETCNF	0x881D00	0x61300	Network configuration. Used by BB Navigator Network Configuration Library.	BIN
MCSERV	0x881D40	0x61340	RPC server for MCMAN.	ELF
-	0x883A40	0x63040		BIN
KROMG	0x884A00	0x64000		BIN
-	0x8866C0	0x65CC0		BIN
KROM	0x886A30	0x66030	Kanji ROM? Not sure where this is used.	BIN
-	0x8A0870	0x7FE70		BIN
ROMVER	0x8A0900	0x7FF00	ROM version.	BIN
-	0x8A0910	0x7FF10		BIN
VERSTR	0x8A0930	0x7FF30	Version string. Probably PS1 ROM will use this because that this string is also present in PlayStation consoles.	BIN
-	0x8A0990	0x7FF90		BIN
ROMGSCRT	0x8A0A00	0x80000		BIN
NCDVDMAN	0x8A3730	0x82D30	It seems to be a heavily stripped-down CDVDMAN module, with no support for some S-command functions like sceCdRI.	ELF
SECRMAN	0x8B0170	0x8F770	Security Manager. Signing is NOT done with the one in ROM, but with a special version that comes with the utility discs. Looks like PS3 units have a different SECRMAN module from retail sets, similar to PS2 TOOL one.	ELF
MCMAN	0x8B4630	0x93C30	Memory Card Manager.	ELF
PADMAN	0x8C3AC0	0xA30C0	Pad manager.	ELF
CDVDMAN	0x8CD210	0xAC810	The CD/DVD manager.	ELF
CDVDFSV	0x8D55C0	0xB4BC0	The RPC server for CDVDMAN.	ELF
FILEIO	0x8DD980	0xBCF80	RPC server for IOMAN. Sony has greatly changed the semantics and design of FILEIO after some point. Connecting an old FILEIO EE RPC client to a newer server will result in a severe IOP crash.	ELF
CLEARSPU	0x8DFA80	0xBF080	Seems to clear/reset the SPU, but is known to cause crashes under some conditions. Not sure if it's buggy or not. Only used by the OSDSYS of the SCPH-10000 and SCPH-15000, probably retained for backward-compatibility.	ELF
UDNL	0x8E16C0	0xC0CC0	It is responsible for selecting the modules and starting the IOP, during the final phase of the IOP reset where the desired modules are to be loaded into the IOP.	ELF
IGREETING	0x8E35C0	0xC2BC0	Displays boot information (i.e. IOP boot type, EBOOTP, IBOOTP, switch positions for DSW602 and the type of DSW602 board installed	ELF
EELOAD	0x8E4620	0xC3C20	The EE ELF loader, which is loaded by LoadExecPS2() to 0x00082000 in PS2 for loading ELFs.	BIN
XCDVDMAN	0x8F37A0	0xD2DA0	cdvd_driver - Updated module	ELF
XCDVDFSV	0x902530	0xE1B30	cdvd_ee_driver - Updated module	ELF
OSDSND	0x910960	0xEFF60	OSD sound library. This is actually the tentative sound driver, which is called "librspu2" in the Sony SDK.	ELF
PS2LOGO	0x93B5B0	0x11ABB0	Displays the PlayStation 2 logo from the inserted disc. For newer consoles, if the logo cannot be decrypted properly, it will fall back to the browser. Not actually required to boot games, but the Sony OSDSYS boots PS2 games through this program.	ELF
XPARAM2	0x957F00	0x137500	Store IOP emulation settings/flags	ELF
OSDSYS	0x95A400	0x139A00	The browser, in ps3 is stripped to parse xparam2. No real browser here.	BIN
PIOPRP	0x998280	0x177880	Present in the PS3 ps2_(gx/soft/net)emu; contains version 3.1.0 of the IOP software (compared to version 1.3.4 on the root).	BIN
KERNEL	0x9DC1E0	0x1BB7E0	The EE kernel	BIN

Description source: https://gist.github.com/uyjulian/25291080f083987d3f3c134f593483c5

Bios region patch

Emulator patch loaded bios image to set proper region based on target_id, and string (separated for readability):

JJjpnJJ  AAengAUU EEengEEE EEengEOA HHengJAG ERengERD CCschJCC HKkorJAG HHtchJAG AAspaAMM

Note: Additional space after first set is intentional and exist also in full string.

Target id to region pairing:

* JJjpnJJ  for 0x83
* AAengAUU for 0x84 , others (DECR, etc.)
* EEengEEE for 0x85 , 0x87 (also forced if game id from SYSTEM.CNF is xxEx_yy.zzz)
* HHengJAG for 0x86 , 0x8A , 0x8E
* AAspaAMM for 0x88 , 0x8F
* EEengEOA for 0x89
* HHtchJAG for 0x8B
* ERengERD for 0x8C
* CCschJCC for 0x8D (unreleased PS3 Chinese model)
* HKkorJAG unused

Bios is patched using EE memory mapping addresses, so offset in file + 0x1FC00000. Using HKkorJAG example, addresses below are set to:

* 0x1FC7FF04 = H (x in "0220xD20121227" string)
* 0x1FC7FF14 = K
* 0x1FC7FF15 = k
* 0x1FC7FF16 = o
* 0x1FC7FF17 = r
* 0x1FC7FF52 = J (x in "System ROM Version 5.0 12/27/12 x" string)
* 0x1FC7FF20 = A
* 0x1FC7FF90 = G

Virtual PS2 HDD

There are 2 different "PS2 game" contents that can be installed in PS3 HDD (CATEGORY's 2P and 2G ). 2P are games released from PSN as "PS2 Classic" in .PKG format, and 2G are a few real "PS2 DVD discs" that can be installed in the PS3 HDD, this installation is managed by the PS2_system_data.pkg.

This games can be installed in real PS2 (in the internall HDD of a PS2 fat)... later this same installation was used in the PSX... and when implemented in PS3 there was needed to use a virtual PS2 HDD image file keeping the same format than the original HDD used in PS2.

Game files (extracted from the real PS2 disc) are installed in a IMAGE.DAT file, this file is a 1:1 "raw copy" of a PS2 HDD.

This IMAGE.DAT is placed in the "install folder" (inside USRDIR folder) and his size can vary up to 10+GB

There are 2 different installations: the most common is used to store "game expansions" (e.g: used by additional content in SOCOM games)... the other type of installation is a "full install" and it seems the only game that uses it is "Final Fantasy XI" (main game installation when the game boots for first time + game expansions added later when needed in the same IMAGE.DAT)

PS2_system_data.pkg itself uses an IMAGE.DAT file (6.43 MB)

The structure of this "virtual PS2 HDD" uses an "APA header" and a "APA MBR" + several "APA partitions", some of them containing "PFS filesystems".

Error message trying to boot a CATEGORY "2G" game with hand-made SFO's and invalid IMAGE.DAT file:
The game partition for this game cannot be created because the installed game is corrupted.
To perform this operation, delete the game, and then reinstall the game using the disc.

• Notes
  • List of PS2 disc games compatibles with PS3 HDD installation hardcoded in dev_flash/vsh/module/game_ext_plugin.sprx
  • Virtual PS2 HDD support module dev_flash/vsh/module/libps2hdd.sprx ?

PS2 System Data (PSN HDD Tool package)

A direct link to the package can be found in NoPayStation database in DLCs

Content ID: IP9100-NPIA00001_00-PS2HDDSYSDAT0001
QA Digest: 2A876715D42678BB7A6E00C030C0121B
HASH: E1B0DBE46FC44190DC7A140681D8B9D4

http://manuals.playstation.net/document/en/ps3/current/game/hddinstall.html

Titles supporting HDD installation

• Nobunaga's Ambition Online and Expansion Packs
• Final Fantasy XI (disc1=SCUS97266 disc2=SCUS97269)and Expansion Discs
• SOCOM II: U.S. NAVY SEALs and Related discs included with OPM Issue 87, OPM Issue 88, OPM Issue 89, OPM Issue 90
• SOCOM 3: U.S. NAVY SEALs
• SOCOM: U.S. NAVY SEALs Combined Assault
• Front Mission Online
• Official PlayStation Magazine Issue 87, 88, 89, 90 Discs

( non-official ps2hdd gameslist )

TitleID/DiscID in game_ext_plugin.sprx

Mainly Final Fantasy 11, Nobunaga Ambition Online, Socom IDs and the required HDD Gigabyte amount for install onto the internal hdd.

Speculation: flags are AND' with 0,1,2 (selected from sys_sm_get_hw_config according to ps2emu hardware flags? 0 = no hw?, 1 = gxemu?, 2=full hw? )

Flags	DiscID	Alternative? DiscID	GigaByte	Title	0 = VMC 1 = IMAGE.DAT	Internal Name?	GigaByte
0xFFFF	SLPS20200	SLPS25200	0x15	FINAL FANTASY XI	1	PP.SLPM-25200.MAGIC.APPLICATION	0x15
	SLPM65705
	SLPM65706
	SLPM65953
	SLPM66393
	SLPM66394
	SLPM66893
	SLPM66894
	SLPM55229
0x0001	SLPM65197	SLPM65197	0x07	信長の野望 Online	1	PP.SLPM-65197.MAGIC.APPLICATION	0x07
	SLPM65783
	SLPM66539
	SLPM66954
0xFFFF	SCUS97269	SCUS97269	0x15	FINAL FANTASY XI	1	PP.SCUS-97266.MAGIC.APPLICATION	0x15
	SLUS21070
	SLUS21404
	SLUS21694
	SLUS21704
0xFFFF	SCUS97275	SCUS97275	0x02	SOCOM	0	PP.SCUS-97275..SOCOM_II	0x02
	SCUS97474
	SCUS97340
	SCUS97341
	SCUS97342
	SCUS97442
	SCUS97545

In PS2 Emulator same Title IDs are present with following information:

SLPS25200 FINAL FANTASY XI          : 0x100000000 (4 GB?)
SCUS97269 FINAL FANTASY XI          : 0x300000000 (12GB?)
SLPM65981 Front Mission Online      : 0x100000000 (4 GB?)
SLPM65197 Nobunagas Ambition Online : 0x200000000 (8 GB?)

Emulators management from GameOS

Mountpoints

 dev_ps2disc
 dev_ps2disc1 

ps2_netemu syscalls

Vector at 0xC00 address.

0x00 -
      0 = return ((unk from 0x1C30/0x1C38 << 56) | thread_number << 48 | ctrl_CT1 (in bit 30) | srr1_EE (in bit 15) | srr1_PS (in bit 14) | srr1_DR (in bit 4))
          Where 0x1C30/0x1C38 is selected depending on current HW thread.
          Thread number is current SW thread
          ctrl_CT1 is lower bit of CT (Current Thread) from PPC Control Register (0 for HW0, 1 for HW1)
          srr1_EE is MSR Enable External Interrupts bit from time when exception occurred (from before syscall was executed)
          srr1_PS is MSR Problem State bit from time when exception occurred (from before syscall was executed)
          srr1_DR is MSR Data Relocate bit from time when exception occurred (from before syscall was executed)
      1 = 0x132 lv1 panic
      2 = 0x133 lv1 panic
      3 = 0x134 lv1 panic
      4 = 0x135 lv1 panic
      else = 0x136 lv1 panic
0x02 - Destroy init code and perform illegal instructions check. Memzero following addresses:
      CODE: 0x16000 - 0x20B80
      DATA: 0x930F80 - 0x933F80
      UNK:  0x3D016000 - 0x3D020B80
0x03 - Enable additional code related to VU0/COP2.
      3 = Patch 0x186C10 to NOP
      4 = Patch 0x186C40 to NOP
      anything else = LV1 panic
0x04 - Unknown. Available for HW0 only. 
0x05 - External interrupts disable (48 bit in MSR). Returns previous MSR state.
0x06 - External interrupts enable (48 bit in MSR) if param & 0x8000 is not 0, otherwise disable them.
      This sc is more like restore 48th bit of MSR, but many times emu use it to enable bit without using old state.
      Also, emulator panic LV1 if syscall is called while external interrupts are already enabled.
0x0A - IPU emulation related syscall
0x0B - IPU emulation related syscall
0x0C - Used in PS2 COP0 MTC0/MFC0 r9/r25 (count/perf), decrementer/timing related, return value in r15.
       Config CMD 0x17 disable that syscall for r9 (count) r/w, and alternative path is used. Perf r/w still use it.
0x0E - PS2 counters/timers related (also used on vsync related functions).
0x0F - PS2 counters/timers related (also used on vsync related functions).
0x10 - lv1 panic.
0x11 - Wrapper for lv1_read_virtual_uart(port_number, buffer, bytes) [HW0 only, only ports 0 and 2 available, else panic]
0x12 - Wrapper for lv1_storage_send_device_command(dev_id, cmd_id, cmd_block, cmd_size, data_buffer, blocks)
      [HW0 only, Available only for threads: VRC, MECHA, HDD, else panic]
      params are rearranged:
      r3 = cmd_block (0x245E000 is added to this value internally)
      r4 = data_buffer (0x245E000 is added to this value internally)
      r5 = blocks
      dev_id is taken from 0x245D008 and it is 0(HDD) for my dump.
      cmd_id = 0x88 and cmd_size is 8.
0x13 - Set thread info unknown byte to 1 for respective thread and set unknown byte to 1 in USB thread.
      [HW0 only, else panic. Available only for threads: BL2MAIN and BL2LNK, else do nothing in exception handler]
0x14 - Same as 0x13 but set all bits to 0 regardless which thread called it.
      [HW0 only, else panic. Available only for threads: BL2MAIN and BL2LNK, else do nothing in exception handler]
0x1002 - Invalidate gpu hvcalls.
0x800000XX - HV Syscall where XX is syscall nr.
else (other syscalls) - jump to 0x12670 (FW4.78 - current) for HW_0
                        jump to 0x12050 (FW4.78 - current) for HW_1 

List of used HV syscalls:

0x80000000 - HV_Syscall_Reference#lv1_allocate_memory
0x80000001 - HV_Syscall_Reference#lv1_write_htab_entry
0x80000002 - HV_Syscall_Reference#lv1_construct_virtual_address_space
0x80000007 - HV_Syscall_Reference#lv1_select_virtual_address_space
0x80000009 - HV_Syscall_Reference#lv1_pause
0x8000000F - HV_Syscall_Reference#lv1_put_iopte
0x80000012 - HV_Syscall_Reference#lv1_construct_event_receive_port
0x8000001A - HV_Syscall_Reference#lv1_detect_pending_interrupts
0x8000001B - HV_Syscall_Reference#lv1_end_of_interrupt
0x8000001C - HV_Syscall_Reference#lv1_connect_irq_plug
0x80000039 - HV_Syscall_Reference#lv1_construct_logical_spe
0x8000003D - HV_Syscall_Reference#lv1_set_spe_interrupt_mask
0x80000042 - HV_Syscall_Reference#lv1_clear_spe_interrupt_status
0x80000043 - HV_Syscall_Reference#lv1_get_spe_interrupt_status
0x80000045 - HV_Syscall_Reference#lv1_get_logical_ppe_id
0x80000049 - HV_Syscall_Reference#lv1_set_interrupt_mask
0x8000004A - HV_Syscall_Reference#lv1_get_logical_partition_id
0x8000004E - HV_Syscall_Reference#lv1_get_spe_irq_outlet
0x8000005B - HV_Syscall_Reference#lv1_get_repository_node_value
0x8000005F - HV_Syscall_Reference#lv1_read_htab_entries
0x80000061 - HV_Syscall_Reference#lv1_set_vmx_graphics_mode
0x80000062 - HV_Syscall_Reference#lv1_set_thread_switch_control_register
0x80000074 - HV_Syscall_Reference#lv1_allocate_io_segment
0x80000076 - HV_Syscall_Reference#lv1_allocate_ioid
0x80000078 - HV_Syscall_Reference#lv1_construct_io_irq_outlet
0x8000007C - HV_Syscall_Reference#lv1_undocumented_function_124
0x8000007D - HV_Syscall_Reference#lv1_undocumented_function_125
0x8000007E - HV_Syscall_Reference#lv1_undocumented_function_126
0x80000088 - HV_Syscall_Reference#lv1_undocumented_function_136
0x8000008C - HV_Syscall_Reference#lv1_construct_lpm
0x8000008D - HV_Syscall_Reference#lv1_destruct_lpm
0x8000008E - HV_Syscall_Reference#lv1_start_lpm
0x8000008F - HV_Syscall_Reference#lv1_stop_lpm
0x80000090 - HV_Syscall_Reference#lv1_copy_lpm_trace_buffer
0x80000091 - HV_Syscall_Reference#lv1_add_lpm_event_bookmark
0x80000092 - HV_Syscall_Reference#lv1_delete_lpm_event_bookmark
0x80000093 - HV_Syscall_Reference#lv1_set_lpm_interrupt_mask
0x80000094 - HV_Syscall_Reference#lv1_get_lpm_interrupt_status
0x80000095 - HV_Syscall_Reference#lv1_set_lpm_general_control
0x80000096 - HV_Syscall_Reference#lv1_set_lpm_interval
0x80000097 - HV_Syscall_Reference#lv1_set_lpm_trigger_control
0x80000098 - HV_Syscall_Reference#lv1_set_lpm_counter_control
0x80000099 - HV_Syscall_Reference#lv1_set_lpm_group_control
0x8000009A - HV_Syscall_Reference#lv1_set_lpm_debug_bus_control
0x8000009B - HV_Syscall_Reference#lv1_set_lpm_counter
0x8000009C - HV_Syscall_Reference#lv1_set_lpm_signal
0x8000009D - HV_Syscall_Reference#lv1_set_lpm_spr_trigger
0x800000A3 - HV_Syscall_Reference#lv1_write_virtual_uart
0x800000A4 - HV_Syscall_Reference#lv1_set_virtual_uart_param
0x800000A5 - HV_Syscall_Reference#lv1_get_virtual_uart_param
0x800000A6 - HV_Syscall_Reference#lv1_configure_virtual_uart_irq
0x800000AA - HV_Syscall_Reference#lv1_open_device
0x800000AB - HV_Syscall_Reference#lv1_close_device
0x800000AC - HV_Syscall_Reference#lv1_map_device_mmio_region
0x800000AE - HV_Syscall_Reference#lv1_allocate_device_dma_region
0x800000AF - HV_Syscall_Reference#lv1_free_device_dma_region
0x800000B0 - HV_Syscall_Reference#lv1_map_device_dma_region
0x800000B1 - HV_Syscall_Reference#lv1_unmap_device_dma_region
0x800000B2 - HV_Syscall_Reference#lv1_read_pci_config
0x800000B3 - HV_Syscall_Reference#lv1_write_pci_config
0x800000C5 - HV_Syscall_Reference#lv1_connect_interrupt_event_receive_port
0x800000CF - HV_Syscall_Reference#lv1_enable_logical_spe
0x800000D2 - HV_Syscall_Reference#lv1_gpu_open
0x800000D4 - HV_Syscall_Reference#lv1_gpu_device_map
0x800000D6 - HV_Syscall_Reference#lv1_gpu_memory_allocate
0x800000D9 - HV_Syscall_Reference#lv1_gpu_context_allocate
0x800000DD - HV_Syscall_Reference#lv1_gpu_context_iomap
0x800000E1 - HV_Syscall_Reference#lv1_gpu_context_attribute
0x800000E3 - HV_Syscall_Reference#lv1_gpu_context_intr
0x800000E4 - HV_Syscall_Reference#lv1_gpu_attribute
0x800000F5 - HV_Syscall_Reference#lv1_storage_read
0x800000F6 - HV_Syscall_Reference#lv1_storage_write
0x800000F9 - HV_Syscall_Reference#lv1_storage_get_async_status
0x800000FF - HV_Syscall_Reference#lv1_panic

LPAR / AUTH ID's

Name	Auth ID	Self (/dev_flash/ps2emu)	Notes
PS2_LPAR	0x1020000003000001	ps2_emu.self
*SCE_CELLOS_SYSTEM_MGR_PS2	0x107000001D000001
PS2_GX_LPAR	0x1020000003000001	ps2_gxemu.self
*SCE_CELLOS_SYSTEM_MGR_PS2_GX	0x107000001D000001
PS2_SW_LPAR	0x1020000003000001	ps2_softemu.self
*SCE_CELLOS_SYSTEM_MGR_PS2_SW	0x107000001D000001
PS2_NE_LPAR	0x1020000003000001	ps2_netemu.self
*SCE_CELLOS_SYSTEM_MGR_PS2_NE	0x107000001D000001

Getting compatibility hardware info

See: PS2_Compatibility#Software

ps2bootparam.dat

A file created at path: dev_hdd0/tmp/game/ps2bootparam.dat

• See: ps2bootparam.dat

Cobra core

taken from storage_ext.c

 patch_ps2emu_entry(ps2emu_type); 

• sets proper ps2_(gx/soft)emu.self path for reboot
• patches ss_storage service 0x5004 disc checks on ss_server3.self inside lv1

 (Change from Parameter li r3, 2 and li r3, 1E (Drive Authentification) to li r3, 0x29 (Reset Drive))

• and the usual either replace read/ioctl for iso etc.

Game CONFIG

Some of the PS2 emulator types (such ps2_gxemu.self, ps2netemu.self) are able to load config commands that are applyed "by game ID". The concept of "game patches" is not technically correct because some of the commands does patching functions but others does other things (not patching), and other commands works as switches or sets a value that are enviromental settings for the emulator (not for the game) but because are applyed "by game" should be considered enviromental settings for that specific game, so for simplification purposes you can think in all this data as "game configs"

This "game config" data seems to work in the same way for all the PS2 emulator types but can be located in different places, some are hardcoded inside the emulators itself (inside the .self), and at the time the "PS2 classics" emulator (ps2_netemu.self) was developed this config can be loaded from an external file

In short, the "game configs" can modify the game image (by patching it) and can be used to configure the virtual PS2 (the emulated machine). And can be loaded from hardcoded data (inside the .self) or from an external file (this feature is supported only by ps2_netemu.self). Maximum CONFIG size for ps2_netemu is 16384 bytes.

The config data consists in a list of concatenated values of 8 bytes length (uint32_t), and can be processed like this:

union{
 uint32_t command
 ...data...
}

Config Commands

ps2_netemu.self fw4.50 sub_12D7D8, fw4.81 sub_12E050
params are uint32_t unless noted.

At the time of writing this, most of the commands are completely or partially unknown.
If you want to read some speculation and brainstorming about them, please join the Discussion page

PS2 Emulators Config Commands Overview

Command Name	Command ID			Max Usage	Command Data
	gxemu	softemu	netemu		Length	Params
TitleID enforce	N / A	N / A	0x00	1	char[10]	titleid
Hook EE memory offset with emu function ID	0x00	0x00	0x01	3 ?	2 * uint32_t	offset	functionid
Set something	0x01	0x01	0x02	1	uint32_t	?
Switch something	0x02	0x02	0x03	1	0	Nothing
Patch something in SP3 EEDMA	0x03	0x03	0x04	1	uint32_t	?
Set DIRECT/DIRECTHL VIF1 in SP3 EEDMA	0x04	0x04	0x05	1	0	Nothing
Switch something	0x05	0x05	0x06	1	0	Nothing
Delay VU xgkick by X cycles	0x06	0x06	0x07	1	uint32_t	cycles
Patch VU memory by bitmask	0x07	0x07	0x08	3	8 * uint32_t	MASK
Patch EE memory with 2 opcodes	0x08	0x08	0x09	1→32	uint32_t + LIST	count	LIST
Patch EE memory with 1 opcode	N / A	N / A	0x0A	1→32	uint32_t + LIST	count	LIST
Patch game disc by sector & offset	0x09	0x09	0x0B	1→47	uint32_t + LIST	count	LIST
Set something	0x0A	0x0A	0x0C	1	2 * uint16_t	unk_mode	unk_range
Set something	0x0B	0x0B	0x0D	1	uint32_t	skip
COP2 and FPU accurate ADD/SUB address	0x0C	0x0C	0x0E	32	uint32_t	offset
COP2 and FPU accurate ADD/SUB range	0x0D	0x0D	0x0F	32	2 * uint32_t	start offset	end offset
COP2 accurate MUL/DIV range	0x0E	0x0E	0x10	32	2 * uint32_t	start offset	end offset
VU0 accurate ADD/SUB address	0x0F	0x0F	0x11	32	uint32_t	offset
VU related ?	0x10	0x10	0x12	1→63	uint32_t + LIST	flags ?	LIST
Memory Card Delay	0x11	0x11	0x13	1	uint64_t	time ?
VU1 transform ADD/SUB	0x12	0x12	0x14	1	0	Nothing
Set something with bit flags	0x13	0x13	0x15	1	uint32_t	?
Unknown	0x14?	0x14?	0x16	?	?	?
COP0 configure MTC0/MFC0	0x15	0x15	0x17	1	uint8_t ?	status
Switch something	0x16	0x16	0x18	1	0	Nothing
Force analog controller mode	N / A	0x17	0x19	1	0	Nothing
Switch something	0x17	0x18	0x1A	1	0	Nothing
Switch something	0x18	0x19	0x1B	1	0	Nothing
Emulate Multitap	0x19?	0x1A?	0x1C	1	uint8_t	port
Set Multitap	0x1A	0x1B	0x1D	1	uint8_t	order
Multitap related	0x1B	N / A	0x1E	1	uint8_t	?
Set something	0x1C	0x1C	0x1F	1	uint32_t	?
Set something	0x1D	0x1D	0x20	1	uint64_t	?
Set something	0x1E	0x1E	0x21	1	uint32_t	?
Switch something	N / A	0x1F	0x22	1	0	Nothing
Switch something	0x1F	0x20	0x23	1	0	Nothing
Internal image aspect ratio ?	0x20	0x21	0x24	1	uint64_t	?
Switch something	0x21	0x22	0x25	1	0	Nothing
FPU accurate ADD/SUB range	0x22	0x23	0x26	32	2 * uint32_t	start offset	end offset
COP2 accurate ADD/SUB range	0x23	0x24	0x27	32	2 * uint32_t	start offset	end offset
Set something (CDVD)	0x24	0x25?	0x28	1	uint32_t	?
CDVD read/seek timings ?	0x25	0x26?	0x29	1	2 * uint32_t	?	?
Switch something	0x26	0x27	0x2A	1	0	Nothing
Switch something (CDVD)	0x27?	0x28	0x2B	1	0	Nothing
Set something	0x28	0x29	0x2C	1	uint32_t	?
Switch something	0x29?	0x2A	0x2D	1	0	Nothing
Set something	0x2A	0x2B	0x2E	1	uint32_t	?
Set something	0x2B	N / A	0x2F	1	uint32_t	?
Reserved	N / A N / A N / A N / A N / A	N / A N / A N / A N / A N / A	0x30 0x31 0x32 0x33 0x34	0	0	Nothing
Enable Force Flip Field	N / A	N / A	0x35	1	0	Nothing
Reserved	N / A N / A N / A N / A N / A N / A N / A	N / A N / A N / A N / A N / A N / A N / A	0x36 0x37 0x38 0x39 0x3A 0x3B 0x3C	0	0	Nothing
Config revision	N / A	N / A	0x3D	1	uint32_t	revision
Switch something	N / A	N / A	0x3E	1	0	Nothing
Set something	N / A	N / A	0x3F	1	uint32_t	?
Switch something	N / A	N / A	0x40	1	0	Nothing
Switch something	N / A	N / A	0x41	1	0	Nothing
Patch EE memory by overlay	N / A	N / A	0x42	1→1023	2 * uint32_t + LIST	offset	count	LIST
Set something	N / A	N / A	0x43	1	uint32_t	?
Disable smoothing filter	N / A	N / A	0x44	1	0	Nothing
Switch something	N / A	N / A	0x45	1	0	Nothing
Enable L2H Improvement	N / A	N / A	0x46	1	0	Nothing
Enable XOR CSR	N / A	N / A	0x47	1	0	Nothing
Set VSYNC IPU & Delay	N / A	N / A	0x48	1	2 * uint32_t	ipu	delay
Switch something	N / A	N / A	0x49	1	0	Nothing
Switch something	N / A	N / A	0x4A	1	0	Nothing
Set something	N / A	N / A	0x4B	1	2 * uint32_t	?	?
Set something	N / A	N / A	0x4C	1	2 * uint32_t	?	?
Set something	N / A	N / A	0x4D	1	uint32_t	?
Unknown	N / A	N / A	0x4E	1	?	?
Unknown	N / A	N / A	0x4F	1	?	?
Enable pressure sensitive controls	N / A	N / A	0x50	1	0	Nothing

0x00	Command Name:	Title ID Enforce / Multidisc config
	Command Data:	1x String in format: ABCD-12345

Restricts the CONFIG to be used only by a specific Title ID The presence of this command in the CONFIG is optional. If present it needs to be located always at the last position in the CONFIG. When bytes are present after Title ID, emulator read them to setup multidisc info.

Multidisc info bytes:
First byte:  Unknown, seems to be unused. 00 in known configs (Grandia 3).
Second byte: Discs count (0-9), when 0 or 1 emulator don't enable multidisc mode.
Third byte:  Which disc in set is this one (0-8 for discs 1-9)
Fourth byte: That one is optional, but very important. When set to 1,
             disc swap menu will be in "Reset game" menu and disc change will trigger reset (default behavior).
             But when this byte is set to 0, new option in main emu menu called "Switch Discs" will appear. Emulator change disc without reset. 
             Keep in mind we don't know how accurate swap emulation is here, games are picky for some details. 
             Every iso bin enc in set need to have proper data in separate config. 
             Disc 1: ISO.BIN.ENC --> CONFIG --> 00 02 00 00,
              00000000  3D 00 00 00 A8 3E 00 00 00 00 00 00 53 4C 55 53  =...¨>......SLUS
              00000010  2D 32 31 33 33 34 00 02 00                       -21334...

             Disc 2: ISO.BIN.ENC2--> CONFIG2--> 00 02 01 00, etc.
              00000000  3D 00 00 00 A8 3E 00 00 00 00 00 00 53 4C 55 53  =...¨>......SLUS
              00000010  2D 32 31 33 34 35 00 02 01                       -21345...

             Grandia 3 DISC.IDX, content:
              00000000  00 00                                            ..

0x01	Command Name:	EE_ADD_HOOK
	Command Data:	2x uint32_t Params (addr, func_id 0-0x3B)

Most of the hooks availables in netemu command 0x01 are fixes for a specific game, or a game engine
The Maximum Amount of times netemu command 0x01 can be used consecutivelly in the same config is 255. This is actually limit for EE hooks at all, 0x01 don't have own limit.

Function ID	Notes
0x00	FIFA 2000 use it as hook for EE kernel at 0x800017E8 (DMAC related). Command backup value from r5900 s0 register.
0x01	FIFA 2000 use it as hook for EE kernel at 0x80001858 (DMAC related). Command restore previously backed up value to r5900 s0 register.
0x02	Max Payne Write 0 to D_ENABLEW in SPE 3 (EEDMA). D_ENABLER is NOT updated on PPE side.
0x03	Max Payne Write 0xFFFFFFFF (0x10000, other bits are ignored anyway) to D_ENABLEW in SPE 3 (EEDMA). D_ENABLER is NOT updated on PPE side.
0x04	Castle Shikigami II Skip r5900 CACHE IXIN/IHIN (Index/Hit invalidate) opcodes. Same as 0x03 command, but applied of selected ee offset. This is probably command from times when 0x03 was non existing, and while it apply on selected ee offset, command never recover default IXIN/IHIN handling. Note: There is leftover in emulator from command that reenable default behavior, but is unused now, and is not accessible by current config commands.
0x05	Force events test if D2_CHCR & 0x100 is true (if GIF dma is running). For more info check _cpuEventTest_Shared from pcsx2. Star Wars games developed by Pandemic Studios (freeze fix), Worms 3D and NBA 08.
0x06	Force events test if D1_CHCR & 0x100 is true (if VIF1 dma is running). For more info check _cpuEventTest_Shared from pcsx2.
0x07
0x08	Backup current unmodified COP0 status register state. Then disable EI bit, and notify emu that cmd 0x09 could be run. Harry Potter - Quidditch World Cup US use it at offset 0x2BD45C (EE)
0x09	Restore COP0 status register state from previously created backup. Harry Potter - Quidditch World Cup US use it at offset 0x2BD620 (EE)
0x0A	Fix for TriAce executable unpack function. Games unpack data using VU0 microruntime (not COP2). Because unpack involve floating points operations result can be inaccurate. And it is, exactly by 1 byte. Config add 1 to result of unpacked data. This can be confirmed also on pcsx2 with turned off TriAce hack, example for Radiata Stories US release. Set breakpoint on 0x124D90, and then when it's hit, add 1 to lower 64 bits of vf03 reg (in vu0f tab) and hit run. Game now work as it should. On PS3 this probably can be fixed also by 0x11 command, but since they had hook already done before 0x11 was a thing, it stayed as is.
0x0B	Set lower 64 bits of mips $at register to 0
0x0C	Piglet's Big Game
0x0D	usleep(100)
0x0E	Used 3 times in Need for Speed - Carbon [Collector's Edition] US. Used in place where game load code overlays, and in place where game self modify code. Config run the same function which is run when PS2 syscall 7 (ExecPS2) hook is triggered (0x1831A8 in latest emu memory). Only difference is that 0x42 overlay is not reloaded, and check for "cdrom0" string is not performed. Command could be potentially useful for games that like to change own code. Eg. Load "bin" files with code (HSG/HST), or modify own code by direct writes to memory (NFS Carbon CE...)
0x0F	Grand Theft Auto 3 (SLUS-20062) using 0x348B40, 0x18E1F0, 0x348EC8 ( + 200000000 base ) 0x348B40 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *)) 0x348EC8 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *))
0x10	Grand Theft Auto 3 (SLES-50330) using 0x349790, 0x18E1F0, 0x349B18 ( + 200000000 base ) 0x349790 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *)) 0x349B18 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *))
0x11	Grand Theft Auto 3 (SLES-50793) using 0x3495C0, 0x18E1F0, 0x349948 ( + 200000000 base ) 0x3495C0 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 0x18E1F0 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *)) 0x349948 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *))
0x12	Disney/Pixar Finding Nemo (fixes the pause menu freeze) if COP0 status EI and EXL bits are 0, and other condition related to DMAC is met... store 0 in [ 0x204FC500 + 200000000 base] 0x4FC500 EE memory, and set lower 64 bits of mips $s0 register to 0.
0x13	Snowblind Engine specific fix. Applies to the beginning of function called initLump. Config is responsible for grabbing data from one of registers for use in 0x14/0x15 hooks. Mentioned data is EE memory offset, if data from 0x13 is 0, 0x14/0x15 don't apply.
0x14	Snowblind Engine specific fix. Applies to the end of function called initLump. Used in the older version of Snowblind Engine (Dark Alliance duology, The Bard's Tale, Fallout).
0x15	Snowblind Engine specific fix. Applies to the end of function called initLump. Used in the newer version of Snowblind Engine (Champions duology, Justice League Heroes, Combat Elite).
0x16	Champions of Norrath (SLUS-20565) store 0x01114BA8 in [ 0x208EAB4C + 200000000 base] store 0x010C9E40 in [ 0x208EAB6C + 200000000 base]
0x17	NFS HP2 fpu rounding fix. Check if a0 == 0x8000 (32768), apply config if true. Config is little bit more complicated than it should, emu flush all fpu regs to memory just to modify one field in altivec vector register. When condition is met ps2 cop1 f08 register is modified from 0x40490FDB to 0x40490FDA, this result in next operations to end up as negative 0.0 (0x80000000) instead of just 0.0 (0x00000000). Seems to trigger when loading of stage or loading of attract mode is close to finish or done.
0x18	Okami PAL specific hook. Check if opcode at 0x183F04 of EE memory is jal 0x183CB0 (0x0C060F2C). This is used to run additional hook patcher only 1 time. Later it will be nop here. so it means that new hooks are already applied. So function will just return early. if opcode at 0x183F04 is still jal 0x183CB0 (0x0C060F2C), then patch addresses 0x183F04 (jal 0x183CB0), 0x183F34 (jal 0x183CB0), 0x183F3C (jal 0x183D18) to nop. Finally adds 3 additional EE hooks. Emu addresses for ps2_netemu 4.70+ EE address | EMU address 0x183F0C | sub_46334 0x183F3C | sub_45DA4 0x183D74 | sub_47B50 First hook is responsible for grabbing EE addresses from one of EE gpr register. Second hook perform few checks from data in EE gpr registers, and eventually store data from EE gpr registers on previously grabbed addresses. Hook 3 store one of previosly grabbed EE address on unknown part of memory. Whole thing looks like HLE version of noped functions.
0x19	Burnout 2 Copy lower 64 bits of $v0 r5900 register to lower 64 bits of $a1 r5900 register. All that to make next opcode (hook address + 4) "beq $a1, $v0, addr" always true. Because $a1 and $v0 now have the same value. This in turn skip CTimer::GetTimeSeconds((void)) in function CReplay::NextFrame((CDrivingControls *)). Worth to note that CReplay::NextFrame seems to be not related to replay per se, but to car physics.
0x1A	store 0 in [ 0x209FD560 + 200000000 base] store 0 in [ 0x209F9550 + 200000000 base] store 0 in [ 0x20A01570 + 200000000 base] store 0 in [ 0x209F9540 + 200000000 base] store 0 in [ 0x209F5540 + 200000000 base] store 0 in [ 0x209F1530 + 200000000 base]
0x1B	store 0 in [ 0x20552168 + 200000000 base]
0x1C	store 1 in [ 0x20552168 + 200000000 base]
0x1D	store 0 in [ 0x20556C08 + 200000000 base]
0x1E	store 1 in [ 0x20556C08 + 200000000 base]
0x1F	store 0 in [ 0x205243D8 + 200000000 base]
0x20	store 1 in [ 0x205243D8 + 200000000 base]
0x21	store 0 in [ 0x20524F88 + 200000000 base]
0x22	store 1 in [ 0x20524F88 + 200000000 base]
0x23	store 0 in [ 0x2047E7F8 + 200000000 base]
0x24	store 1 in [ 0x2047E7F8 + 200000000 base]
0x25	store 0 in [ 0x204802B8 + 200000000 base]
0x26	store 1 in [ 0x204802B8 + 200000000 base]
0x27	store 0 in [ 0x20586348 + 200000000 base]
0x28	store 1 in [ 0x20586348 + 200000000 base]
0x29	store 0 in [ 0x205868A8 + 200000000 base]
0x2A	store 1 in [ 0x205868A8 + 200000000 base]
0x2B	if ($a1 & 0xF0000000 != 0) a1 = 0
0x2C	Shin Onimusha - Dawn of Dreams Fix IPU DMA JPN((PlayStation 2 the Best)/US release.
0x2D	Shin Onimusha - Dawn of Dreams Fix IPU DMA PAL release.
0x2E	Shin Onimusha - Dawn of Dreams Fix IPU DMA Unk release. Code from emu match SLPM-66275 release. Why it is unused? Hook address will be 0x3BB4EC.
0x2F	if value at EE Mem 0x37B0C4 == 0, set mips pc register (program counter) to 0x100B98 Config is supposed to repeat chunk of code if EE mem 0x37BB0C == 0.
0x30	if value at EE Mem 0x37B704 == 0, set mips pc register (program counter) to 0x100B98 Config is supposed to repeat chunk of code if EE mem 0x37BB0C == 0.
0x31	if value at EE Mem 0x37630C == 0, set mips pc register (program counter) to 0x100BA8 Config is supposed to repeat chunk of code if EE mem 0x37BB0C == 0.
0x32	if value at EE Mem 0x37BB0C == 0, set mips pc register (program counter) to 0x100BA8. Config is supposed to repeat chunk of code if EE mem 0x37BB0C == 0.
0x33
0x34	not filled
0x35	Ninkyouden: Toseinin Ichidaiki
0x36
0x37
0x38
0x39	Used silently in command 0x4B with first param from 0x4B as hook address. Hook seems to be unusable without 0x4B command, because there is no way to setup redirect mode and ID without 0x4B.
0x3A	Used silently in command 0x4C with first param from 0x4C as hook address. Hook seems to be unusable without 0x4C command, because there is no way to setup mode and ID without 0x4C.
0x3B	Grand Theft Auto 3 (SLPM-55293 "Rockstar Classics") using 0x351210, 0x18F590, 0x351568 ( + 200000000 base ) 0x351210 = start CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *)) 0x18F590 = start CCollision::ProcessColModels((CMatrix const &, CColModel &, CMatrix const &, CColModel &, CColPoint *, CColPoint *, float *)) 0x351568 = Almost end (only loading values preserved on stack) of CTheScripts::ClearSpaceForMissionEntity((CVector const &, CEntity *))

0x02	Command Name:	Unknown
	Command Data:	1x int32

Used in function that handle D6 CHCR writes (SIF1), seems to be some kind of timing command for EE --> IOP DMA.

• Valid values found:
  • 1000d
  • 3000d
  • 6000d

0x03	Command Name:	Unknown
	Command Data:	N/A

Skip r5900 CACHE IXIN/IHIN (Index/Hit invalidate) opcodes.

0x04	Command Name:	Unknown
	Command Data:	1x uint32_t index (i*0x80, special 0x12345: 0x91a280?)

Patch SPE 3 program (eedma) by searching for ila r4, xxxxx, starting at 0x178A0 and replacing them with (0x42000004 | ((value << 7) & 0x1FFFF80) 0x42000004 is ila r4 opcode. Due to opcode encoding example result of that patch with value 0x08 will be 0x42000404 (ila r4, 0x08). There is little bit more than that, but main purpose is just to patch SPE program behavior.

• Valid values found:
  • 0x08
  • 0x10

0x05	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x06	Command Name:	Unknown
	Command Data:	N/A

Change VIF1 command 02h OFFSET behavior by patching pointer to function which process it to different previously unused function.

0x07	Command Name:	Delay VU xgkick by X cycles
	Command Data:	1x uint32_t

Default 1

0x08	Command Name:	Patch VU memory by mask
	Command Data:	8x uint32_t (read mask,read mask, original opcode, original opcode, write mask, write mask, replace opcode, replace opcode)

Maximum Amount of Usage: 3 times

0x09	Command Name:	EE_INSN_REPLACE64
	Command Data:	uint32_t count, <list> (offset, original opcode, original opcode, replace opcode, replace opcode)

Maximum List Count: 32

• Valid values found
  • 1 [Dark Cloud] and [Dead Or Alive 2 Hardcore]

0x0A	Command Name:	EE_INSN_REPLACE32
	Command Data:	uint32_t count, <List> (mode | offset, original opcode, replace opcode)

Command present only in the ps2_netemu. Maximum List Count: 32. Mode is first 4 bits of address field (Xyyyyyyy), can be either 0, 1, or 2. All known examples use this command in 0 mode, and modes 1 and 2 are here just for documentation purposes.

• mode 0 - Replace 32 bit of EE memory. Params are EE offset, original opcode, replace opcode.
• mode 1 - Write jr ra, li v0, xxxx to selected memory range. Params are EE memory start address, original opcode, u16 counter, u16 value for li, v0 xxxx
• mode 2 - NOP memory at selected range. Params: start address, end address, unused (can be anything, but is required to align config).

Problem: Original opcode validity check is performed before testing config for special cases. Thus making mode 2 almost inaccessible.
Solution: We can patch that one line of code by the same 0x0A config. So if we want to nop region from 0x100000 to 0x100080, first we need to patch 0x100000 to 0x100080 opcode. So check will pass, "simple" as that.

0x0B	Command Name:	MECHA_SET_PATCH
	Command Data:	1x uint32_t count, <List> {sector id, offset, sizeof present opcodes, replace opcodes, original opcodes)

Offset on the disc = sector id * sector size + offset + correction [see below]
Offset correction is based on selected read mode (not on media type):

CDRead requested block size (CD disc):

• 2048 = Offset + 0x18 (skip 12 sync bytes, 4 of header, and 8 of subheader)
• 2328 = Offset + 0x18 (skip 12 sync bytes, 4 of header, and 8 of subheader)
• 2340 = Offset + 0x0C (skip only 12 bytes of sync data)

DVDRead requested block size (DVD Disc):

• 2064 = Offset match, but only until the 349th sector. Otherwise is offset - 0x0C because that read mode see data as ID DATA (4) + ID DATA EDC (2) + Reserved bytes (6) + 2048 data + EDC (4).

"Offset + XX" for CD assume that you use Isobuster RAW mode. "Offset - XX" for DVD assume that you use Isobuster NON RAW mode
Special case is DVD read on very low sector, here you need to use exact offset without substrating 0x0C. Highest confirmed sector that don't use correction for now is 349.

 [Dead Or Alive 2 Hardcore] uses 7
 [Gradius V] uses 1
 [Grand Theft Auto III] uses 1
 [Katamari Damacy] uses 1
 [Manhunt] uses 1
 [Odin Sphere] uses 2
 [Primal] uses 1
 [Psychonauts] uses 1
 [Syphon Filter The Omega Strain] uses 1
Maximum List Count: 47

0x0C	Command Name:	Unknown
	Command Data:	1x (uint16_t, uint16_t)

First param can be 0, 1, or 2. Second param in range of 0 and 0xFFFF. Second param is used only if first param == 1. Default values are (1, 0x1000) for PS2DVD, and (1, 0x400) for PS2CD and PS2CDDA.
Other valid values for the second param (found in oficial configs ?): 0x180, 0x800

0x0D	Command Name:	Unknown
	Command Data:	1x int32

True/false. Default = 1

0 = Skip some IOP related code responsible for check value from IOP SPE LS 0x2C0C0 (and skip panic if value is 0 or -1).
Also skip write of value 0x80000000 to SPU Signal Notification 1 Register of IOP SPE.

0x0E	Command Name:	Improves ADD/SUB accuracy
	Command Data:	1x int32

1 Param offset --- Improves ADD/SUB FPU/COP2 accuracy for selected offset. Work with opcodes from commands 0x26/0x27. Basically command like 0x0F just per offset, no per range.

 [Rygar] only has 0x147DA8 sub.s   $f12, $f20, $f12
Used in official configs: SCUS97501=0x3C458C, SCES53642=0x3C4854, SLUS21026=0x386864, SLUS20916=0x121F64, SLUS20437=0x11EDF0
Maximum Amount of Usage: 32 times

0x0F	Command Name:	More accurate ADD/SUB memory range
	Command Data:	List <uint32_t Param, uint32_t Param>

More accurate memory range. This command is combined 0x26, and 0x27 command.

 [Dark Cloud] uses 0x239334, 0x1FFFFFF
 [Grand Theft Auto SA] uses 0x1E46DC, 0x1E4AE8
Maximum Amount of Usage: 32 (if there is no additional 0x26/0x27 command)

0x10	Command Name:	MULDIV Accurate range
	Command Data:	List <uint32_t Param, uint32_t Param>

More accurate MUL/DIV handling on selected memory range for selected FPU opcodes. Effectively work only with:

MUL.s, DIV.s, MULA.s, MADD.s, MSUB.s, MADDA.s, MSUBA.s. 
For ADD/SUB opcodes, command is active only on Multiply stage.
Maximum List Count: 32 

0x11	Command Name:	VU0 Accurate ADD/SUB
	Command Data:	1x uint32_t Param

Param is VU0 (MICROPROGRAM) memory offset, correct param is in range of 0x000 to 0xFF8.

Lower pipeline fetch opcode from address, Upper from address + 4. So correct address for config needs to be 8 bytes aligned.
Used in official configs: SLUS21172=0x208, SLUS20878=0x140,0x368,0x570
Maximum Amount of Usage: 32 times

0x12	Command Name:	Unknown
	Command Data:	<List> (uint32_t count,

VU0/COP2 related multicommand.

First 8 bytes of that command are special flags. Not quite sure about bytes 5-8 yet,
because at some point they are used to "andc" with first 4 bytes.
Some examples for first 4 bytes:
0x1000     = Run additional flag related code after every FMAC operation, VU0 only, COP2 do this by default.
0x2000     = Emit some additional code when lower opcode is fsset, this flag require 0x1000 to be enabled. VU0 only. 
0x100000   = When enabled opcodes like MSUB, MADDA, etc, do proper multiply first, then add/sub. When disabled (default) single opcode is used (vmaddfp / vmmsubfp). Not used in COP2 mode.
             Note: When this command is disabled, then "Accurate MUL" is skipped for MADDxx/MSUBxx regardless that 0x30000000 is set or not.
             Because there is no way to do correct MUL separately when altivec madd/msub is used.
0x200000   = Run some additional code in VU0 load/store opcodes (ILW, LQI, ISWR, etc.) Not used in COP2 mode.
0x400000   = Skip emu syscall 3 (3)
0x800000   = Skip emu syscall 3 (4)
0x4000000  = Enable type 2 config from cmd 0x12.
0x8000000  = Accurate VU0 DIV opcode, not used in COP2 mode.
0x10000000 = Fast Accurate VU0 MUL. Try to round mantissa. Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them. Not used in COP2 mode.
0x20000000 = Full Accurate VU0 MUL. Use runtime from CMD 0x10, but for every matching VU0 opcode, including opcodes like MSUB for mul part.
             Opcodes like MSUB/MADD additionally require 0x100000 to be enabled, otherwise command skip them.

Selecting both 0x10000000 and 0x20000000 (0x30000000) work the same way as 0x20000000.
Keep in mind that you still need to use at least 8 bytes for cmd 0x12, just use 00 for bytes 5,6,7,8. 
Later bits are dependent on which subcommand we want to run.

 [Primal] uses 0xD of type 2/3 subcommand (minus 0x2 for flags)
 [Rayman Arena] uses 0x11 of type 2/3 subcommand (minus 0x2 for flags)
 [Syphon Filter: The Omega Strain] uses 0x5 of type 1 subcommand (minus 0x2 for flags)
Maximum List Count: 63 

0x13	Command Name:	Memory card timing related delay
	Command Data:	1x uint64_t Param

0x9bdc  (39900)  - Used by "Phantasy Star Universe" (official config for SLPM-66031), "WRC II Extreme", and "Burnout Dominator"
0xf960  (63840)  - Used by "Jak X: Combat Racing" (official config for SCUS-97429), and "Netsu Chu! Pro Yakyuu 2004"
0x1d394 (119700) - Used by "Jissen Pachi-Slot Hisshouhou! Kemono-Oh" (official config for SLPS-20131)

0x14	Command Name:	VU1 transform ADD/SUB
	Command Data:	N/A

When enabled ADD/SUB VU1 opcodes are processed differently on recompiling/translation stage. Seems to be very specific hack, most likely not usable outside of THPS 4+ engine games.
Note: This setting affects only VU1, and only ADD/SUB. All other opcodes like ADDi,ADDq, MSUB, ADDbc, are not affected.

0x15	Command Name:	Unknown
	Command Data:	1 Param ( <1, >1 )

Patch SPE 0 (IOP) program in local memory. Command search for absolute branches in LS 0x3A2C0 - 0x3A6C0 and patch first branch that match to "bi r127". That weird approach was probably used because spe program differ little bit between emu versions, so they don't need to update command on every new emu revision. Currently (4.75+) this command patch branch at address 0x3A3A4 (bra sub_2E600). This command takes partially unused value. Value 0,1 do nothing, values 2 and above run command. Doesn't matter is 2,4, or 10. Nothing will change in command behavior.

[Aeon Flux] uses 2 (gxemu config)
[Bloodrayne 2] uses 4
[GRIMgRiMoiRe] uses 4
[Mana Khemia 2] uses 4
[Odin Sphere] uses 4
[SMT Persona 3 FES] uses 4
[Parappa the Rapper 2] uses 0x14 (softemu config) or 0x4 (gxemu config)

0x16	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x17	Command Name:	COP0 configure MTC0/MFC0
	Command Data:	1x int32 ?

True/false. Default 0.
Command change behavior of MTC0/MFC0 operation of COP0 Count ($9) register. When enabled time base register is used as a base for calculation, when disabled decrementer register is used as a base for calculations (using emu syscall 12).

[Bully] uses 1

0x18	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x19	Command Name:	Force analog controller mode
	Command Data:	N/A

Skips check for analog/digital controller mode and returns forced analog mode

[Grand Theft Auto III]
[Grandia II]
[Red Faction 2]
[Siren]

0x1A	Command Name:	Unknown
	Command Data:	N/A

IPU hack to end fromIPU DMA transfer on BCLR command (store 0 on D3_QWC and D3_CHCR.STR). Not stopping that transfer is actually correct behavior..

0x1B	Command Name:	Unknown
	Command Data:	N/A

When IDEC command don't finish, probably due to bad timings. Hack clear D3_CHCR.STR bit when there is still QW left in D3_QWC reg , and IDEC finished already.

[Mana Khemia 2]

0x1C	Command Name:	Emulate Multitap
	Command Data:	read uint32_t (use uint8_t)

Enables/disables Multitap emulation. Default 3

0 = disable multitap emulation
1 = enable multitap in controller port 1 (when needed)
2 = enable multitap in controller port 2 (when needed)
3 = enable multitaps in both controller ports (when needed)
 [Medal of Honor: European Assault] uses 1
 [Twisted Metal: Black] uses 1

0x1D	Command Name:	Set Multitap
	Command Data:	read uint32_t (use uint8_t)

Sets multitap to specific controller ports and adjusts the order of ports to which controllers are synced. Default 0?

0 = no multitap set (only when needed)
    Controller sync order: 1/1-A, 2/2-A, 1-B, 2-B...
1 = sets multitap in controller port 1 at all times
    Controller sync order: 1/1-A, 1-B, 1-C, 1-D...
2 = sets multitap in controller port 2 at all times
    Controller sync order: 1/1-A, 2/2-A, 2-B, 2-C...
3 = sets multitaps in both controller ports at all times
    Controller sync order: same as 0
 [Medal of Honor: European Assault] uses 1
 [Twisted Metal: Black] uses 1
 [Mystic Heroes] uses 2 (game does not detect multitap in controller port 1)
 [Sonic Riders] uses 2 (GX config, game may not detect multitap in controller port 1)

0x1E	Command Name:	Multitap related
	Command Data:	read uint32_t (use uint8_t)

[FIFA 2001] uses 3 (settings for both multitaps?)

0x1F	Command Name:	Unknown
	Command Data:	1x uint32_t

Default 1

Make VIF0 commands MSCAL/MSCALF/MSCNT/MPG/FLUSHE non instant. By default every VIF0 command take 1 cycle, so it's instant.
This config give vif0 some timing sense.
When delta from config passed and vpustat vu0 bits are non 0 (so practically if vif0 is still running),
add 500 cycles and go on until next event test before doing anything on vif0.
This can also be used to ensure that next vif0 command won't run until delta from config passed.
Value from config is added to current r5900 cycles and vif0 will do nothing unless current cycles match new value.
*Valid values found: 200d, 1000d

0x20	Command Name:	Unknown
	Command Data:	1x uint64_t

Default 0x3C

Config value is used as multiplier for some value, and result is used in vsync related runtimes.
Is worth to note that 0x3C is default multiplier even for PAL titles, so is not stricly related to framerate,
but to vsync counters (where 0x3C is still wrong anyway..). Result of multiply is also compared at some point to vsync delay value. 

• Valid values found: 10d, 60d, 100d, 120d, 200d, 240d

0x21	Command Name:	Unknown
	Command Data:	1x uint32_t

Option one default value = 1, when set to 0: r5900 CACHE opcode IXLTG store 0 in COP0 TagLo register. More than that recompiler skip function responsible for analyze and emitting costly iCache checks.
This drastically reduce emitted code size, and practically disable iCache emulation. Additionally CACHE IXIN/IHIN opcodes use different very long code path (this can be skipped with cmd 0x03).
Option two default value = 0, when set to 1: Emit some kind of check for current r5900 PC with possible trap (tw opcode) at the end. 1 is valid only when option one is 0.

0 = sets an option one to 0 and option two to 0
1 = sets an option one to 0 and option two to 1
2 = sets an option one to 1 and option two to 0 (default)
 [Fatal Frame II] uses 0
 [Grand Theft Auto Vice City] uses 1
 [Grand Theft Auto III (EU)] uses 1
 [SMT Persona 3 FES] uses 0

0x22	Command Name:	Unknown
	Command Data:	N/A

Sets something 1

0x23	Command Name:	Unknown
	Command Data:	N/A

Copy VIF1 command 01h STCYCL handler struct into unused 08h slot (slots are 100 bytes per command, include pointer to function that handle command, and other data). Then patch slot 08h function pointers to function at 0x14E00. 08h is normally unused, and handled as a NOP. This command is useful only with additional 0x01 (0x13-0x15) hooks, which inject 08h VIF1 command into game code when other conditions are met.

0x24	Command Name:	Unknown
	Command Data:	1x uint64_t

SIO2 related

• Valid values found: 12000d, 48000d

0x25	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x26	Command Name:	FPU Accurate ADD/SUB range
	Command Data:	List <uint32_t Param,uint32_t Param>

Improves FPU accuracy for selected memory range. Efective only on:

ADD.s, SUB.s, ADDA.s, SUBA.s, MADD.s, MSUB.s, MADDA.s, MSUBA.s
For M(UL) opcodes, command is active only on ADD/SUB stage.

 [Bloodrayne 2] uses 0x340000, 0x350000
 [Gradius V] uses 0x3046E0, 0x0x305E44
Maximum Amount of Usage: 32 (if there is no additional 0x0F command)

0x27	Command Name:	VU0 macromode accurate range
	Command Data:	List <uint32_t Param,uint32_t Param>

Improves COP2 operations accuracy for selected memory range. Effective only for opcodes:

VSUBAxyzw, VSUBAq, VSUBAi, VSUBA, VSUBxyzw, VSUBq, VSUBi, VSUB, VMSUBAxyzw,
VMSUBAq, VMSUBAi, VMSUBA, VMSUBxyzw, VMSUBq, VMSUBi, VMSUB, VMADDAxyzw,
VMADDAq, VMADDAi, VMADDA, VMADDxyzw, VMADDq, VMADDi, VMADD, VADDAxyzw,
VADDAq, VADDAi, VADDA, VADDxyzw, VADDq, VADDi, VADD

Maximum Amount of Usage: 32 (if there is no additional 0x0F command)
Seems to affect only ADD/SUB part of opcode. 

0x28	Command Name:	Unknown
	Command Data:	1x uint32_t

<=3

• Valid values found: 0, 1, 2, 3

0x29	Command Name:	Unknown
	Command Data:	2x uint32_t

Seek time modifier. Exact values meaning is unknown for now, they are used as multiplier. First param affect fast seek time, second param affect full seek time. Default value is 0x1F40, 0xBB80 (8000, 48000). Config affect only CDVD N Command Seek, read command that "SeekToSector" is not affected.

0x2A	Command Name:	Unknown
	Command Data:	N/A

Sets something 1.

All-Star Baseball 2004

0x2B	Command Name:	Unknown
	Command Data:	N/A

When enabled emulated register 0x1F40200F (disc type) is set to 0x13 (PS2CDDA) when media type detected by emu is 0x12 (PS2CD), confirmed in emu code/assembly. Ps2_emu do same thing in "Setting mecha HACK to show GODZCD as GODZCDDA", but due to real media support this is done in little bit different way (but still, 1F40200F is set to 0x13). During testing Dance Factory game, still no tracks are detected regardless of the command. Could be a netemu or Cobra issue (single, mixed mode .bin/.cue loaded).

Dance Factory

0x2C	Command Name:	Unknown
	Command Data:	1x uint32_t

Store (value | value << 32 | value << 64 | value << 96) on 0x2B4F0 of SPE 0 (IOP) LS. In summoner config it will be 0x00000001000000010000000100000001 stored at 0x2B4F0. Value is later used in clgt compare as rb register. Default seems to be 0x00000020000000200000002000000020.

Summoner uses 0x1

0x2D	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x2E	Command Name:	Unknown
	Command Data:	1x uint32_t

• Valid values found: 0x172

0x2F	Command Name:	Unknown
	Command Data:	1x uint32_t

Store value on 0x2E784 in SPE 1 (PS2 SPU2) LS. Used values are 1, and 2 (after andi, so 3 trigger both configs).

• Infamous Final Fantasy confirmation sound issue (in fact it does affect every sound effect using the reverb and only in the ps2_netemu) is fixed by 0x2 value.

Indigo Prophecy/Fahrenheit uses 0x1
Kengo 3 uses 0x2

0x30	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x31	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x32	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x33	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x34	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x35	Command Name:	Enable Force Flip Field
	Command Data:	N/A

Described in emu setting as "Fix for [Hang] for soft-lock"

0x36	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x37	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x38	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x39	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x3A	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x3B	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x3C	Command Name:	N/A
	Command Data:	N/A

Command not available in ps2_netemu.self

0x3D	Command Name:	Config revision
	Command Data:	1x uint32_t

Used by debug menu to print config revision. While every official and unofficial config use it, command is not mandatory. Debug menu will just print None as a config revision if command is missing. Official configs use this as a kind of debugging info to know minimal required emu revision.

Config commands supported by emulator revision

Supported Commands	ps2_netemu Revision	PS3 Firmware
Up to 0x41	15686	3.70 or newer
Unknown	16040	Unknown
Up to 0x43	16604	4.20 or newer
Up to 0x45	16808	4.30 or newer
Up to 0x46	16916	4.40 or newer
Up to 0x48	17041	4.45 or newer
Up to 0x4A	17179	4.50 or newer
Up to 0x4D	17277	4.55 or newer
Up to 0x50	17495	4.78 or newer

See: PS2 Emulator Types and Revisions

0x3E	Command Name:	Unknown
	Command Data:	N/A

Similar to 0x0D with param 0. Affect the same IOP related code path, but skips more code.

0x3F	Command Name:	Unknown
	Command Data:	1x uint32_t

Store value on 0x2B700 of SPE 0 (IOP) LS. SIF1 DMA related.

0x40	Command Name:	Unknown
	Command Data:	N/A

Command change GIF behavior by setting value to 1 at address 0x2F0 LS in SPU4.

Grand Theft Auto SA
Silent Hill Origins - unofficial fix

0x41	Command Name:	Unknown
	Command Data:	N/A

When enabled ignore D_ENABLEW (1000F590) writes from EE on SPE3 (EEDMA). D_ENABLER is updated regardless of cmd on PPE side. Enabling that command nullify 0x01 hooks for Max Payne!

Dragon Force
God Hand
Gradius V
Katamari Damacy

0x42	Command Name:	EE Overlay patch
	Command Data:	2 main Params + patch data: uint32_t address, uint32_t count, opcode,opcode,opcode...

Applied on game start (more precisely while executing ps2 bios syscall 7 ExecPS2), if game overwrite selected part of memory, it will wipe 0x42 patch. See Special:Diff/67828/67858

Start address can be (in theory) anywhere, but Sony used the 0xFF000 - 0xFFFFC range for this purpose.
Count is size of patch in 4 bytes opcodes. So 5 opcode patch = count 5.
Opcodes will be placed on selected address, we use only patch code, no need for original opcode.
Next opcode addresses are auto calculated (+4..) so we need to specify only patch start address.
Remember we need to jump to our new code, best way is command 0x0A with j (jump) opcode.
Also is important to add return jump if required. That one need to be added in our 0x42 patch.
Maximum opcodes count seems to be 0x3FF (1023 opcodes).

0x43	Command Name:	Unknown
	Command Data:	1x int32

Equal to command 0x40, but with Parameter:

Command change GIF behavior by setting value at address 0x2F0 LS in SPU4, correct values are:
0 = Default
1 = More agressive changes (like 0x40)
anything other = less agressive changes
Code on SPU side check for non zero value, and in few places explicitly for 1 (ceqi rxx,rxx,1) without mask. 
Config have weird behavior. When there is no param, and config end (no more bytes after 43 00 00 00), then param 0xFFFFFFFF is set automatically.  

Shin Sangoku Musou uses 0xFFFFFFFF

0x44	Command Name:	Disables Smoothing and Smoothing option
	Command Data:	N/A

0x45	Command Name:	Unknown
	Command Data:	N/A

Sets something 1

Prevent  display_mode 2 (CELL_GCM_DISPLAY_576_unk)         [640x576]
and      display_mode 0 (CELL_GCM_DISPLAY_480_unk) (60Hz?) [640x480]
from beign set.

Allow   display_mode 1 (CELL_GCM_DISPLAY_480_unk2) (59Hz?) [640x480]
and     display_mode 5 (CELL_GCM_DISPLAY_720P_59)          [1280x720]
depending on sys_info.video_mode & 0x200 is 0 or not.
Both 480 modes can be either I or P, so is something else, probably 59/60Hz.
This config possibly affect only in-emu UI, but this require testing.

Phantasy Star Complete Collection

0x46	Command Name:	Enable L2H Improvement
	Command Data:	N/A

Performance related setting for titles using L2H (Local to Host, so called GS download (from GS to EE))

SMT Digital Devil Saga 1 - Crazy amount of GS downloads used to draw characters in-game
SMT Nocturne
Fatal Frame II

Other games affected (not in official config)

Soul Calibur 2 - When looking at the sun
GT4 - When looking at the sun
Valkyrie Profile 2 - Similar situation to SMT DDS1, in Solde game literally do thousands of 30QWC downloads all the time.
Tak and the Power of JuJu - Fix freeze during loading of the Burial Ground level in the NTSC version. This probably getting lucky with VIF1/GIF timing, normally command is not supposed to fix hang issues.

0x47	Command Name:	Enables XOR CSR
	Command Data:	N/A

Graphics related setting.
XOR bit 13 of GS CSR register (CSR.FIELD). Should fix fullscreen line corruption, maybe some interlacing issues. Long shot, but can possibly affect SCANMSK games.

0x48	Command Name:	VSYNC Delay
	Command Data:	2x uint32_t

• First param possible value are 1 = No IPU, 2 = IPU, 3 = Anytime.
• Second param is delay (in ms?), and can be also negative value.
  • Emu has standard presets for second param.
    • Agressive = 0x3D090 (250000 decimal),
    • Normal = 0x186A0 (100000 decimal),
    • Conservative = 0x4E20 (20000 decimal),
    • But other values can be used.

[SMT Digital Devil Saga 1] uses 1, 0x3D090
[Fatal Frame II] uses 0x2, 0xFFFFE69C (-6500 decimal)

0x49	Command Name:	Unknown
	Command Data:	N/A

Skip part of code which use GS XYOFFSET_1 register, possibly ignore it at all.

Trapt

0x4A	Command Name:	Unknown
	Command Data:	N/A

Change VIF1 command 14h MSCAL behavior to use 15h MSCALF (VIF1) instead. MSCALF behavior is the same as MSCAL, but also waits for PATH1 and PATH2 to not be active before starting a microprogram. This is hack, and MSCAL should be fixed instead to wait in queue instead of triggering early.

Applies to the Snowblind Engine games. Fixes the rest of flickering textures.
Meant to be used in conjunction with the GX/SOFT Snowblind Engine's specific commands (double 0x01 and 0x23 combo).

0x4B	Command Name:	Redirect SAVEDATA by ID
	Command Data:	2x uint32_t + ID: offset, int, char[]

For proper config we need at least 2 (can be more if needed) 0x4B commands, one to enable redirect, one to disable.
First param is EE memory offset that when is hit enable/disable redirection.
Second param is used to select which card will be redirected:
  0x00 do nothing
  0x01 for SCEVMC0.VME
  0x02 for SCEVMC1.VME
  0x03 for SCEVMC0.VME and SCEVMC1.VME
  0xFFFFFFFF to disable redirection, and use original VMEs.
Third param is ID of SAVEDATA we want to use padded with 00 to match 12 bytes, or all 00 in disable redirect config.
Important note here is that config have own 00 00 00 00 terminator at the end. 
So after 12 bytes of ID we need to add 4 bytes of 00. That apply also to disable redirect version.
Under the hood config also setup 0x01 hook commands with 0x39 subcommand on selected addresses. 

0x4C	Command Name:	Unknown
	Command Data:	2x uint32_t + ID: offset, int, char[]

Used to redirect to different ISO without game reset. First param is EE offset to hook, second param is some kind of mode selector, depending on that 
emulator later set mecha switch disc state:
  mode 0x01 = set disc switch state to 1 (on next mecha main loop it will emulate opening the tray).
  mode 0x02 = set disc switch state to 3.
  mode 0x03 = set disc switch state to 3. This state repeats because it work different way depending that emulated tray is closed or no.
  mode 0x04 = set disc switch state to 2.
  mode anything else = do nothing.
Third value is ID in big endian hex ascii (eg. NPJD12345), additionally 0x4C expect own 00 00 00 00 terminator. To eventually end redirection use 
another 0x4C but with (offset, 0xFFFFFFFF, 4 * 0x00000000 . This config have very similar usage to 0x4B, just redirect to different iso, instead to 
different MC. Currently is unknown that cobra patched emulators support that config properly, and swap disc thru 0x00 command seems to be easier.
This config don't work if 0x00 multidisc config is detected. Config under the hood setup 0x01 hooks with subcommand 0x3A

0x4D	Command Name:	Unknown
	Command Data:	1x uint32_t

Param is floating point value. Default value 0.

if Q in GS RGBAQ write is 0.0 or -0.0 then
    Q = Q | value from config
else
    Q = Q
 
Wild Arms: The Fifth Vanguard uses 0x3F800000 (1.0)

0x4E	Command Name:	Unknown
	Command Data:	Unknown

0x4F	Command Name:	Unknown
	Command Data:	Unknown

0x50	Command Name:	Enable pressure sensitive controls
	Command Data:	N/A

Config file examples (for netemu)

Official PS2 Classic

See: PS2 Official Configs

Official GXEMU/SOFTEMU extracted

See: PS2 Official Configs

Custom Configs

See: PS2 Custom Configs

Config data examples (hardcoded)

Inside ps2_emu.self

Embedded patches are based on Checksum/Hash of title. ps2_emu is only emulator version where patches are described inside self file in ascii. Known patch types described in ascii are: Patch data, new SPU2 params, and Setting mecha HACK to show GODZCD as GODZCDDA.

PS2 Title	Hash	Game	Patch Type	Data
SCUS_971.46	0x6B1ADE00D	Disney's Treasure Planet	Patch data - Fixes black screen at start, it apply to STREAM_D.IRX file in IOP folder.	0x147C (sector) , 0x580 (offset) (- 0xC on disc) Replace opcodes 00 01 01 3C lui at,0x0100 80 BF 03 3C lui v1,0xBF80 C8 10 63 8C lw v1,0x10C8(v1) 24 18 61 00 and v1,at FB FF 61 10 beq v1,at, -0x10 00 00 00 00 nop Original opcodes FF FF 01 24 li at,-0x1 04 00 61 14 bne at,v1, +0x14 00 80 01 3C lui at,0x8000 02 00 41 14 bne at,v0, +0x0C 00 00 00 00 nop 0D 00 06 00 break
SLUS_201.74	0x23D92589C5	Rumble Racing	Patch data - fixes black screen after Playstation 2 logo. Patch apply to AUDIO.IRX file in MODULES folder	0x3AEDA (sector), 0x120 (offset) Replace opcodes 06 00 80 14 bnez a0, +0x1C 21 20 43 00 addu a0,v0,v1 21 10 A0 00 move v0,a1 02 00 A0 14 bnez a1, +0x0C 00 00 00 00 nop 01 00 05 24 li a1,0x1 EB FF 40 10 beqz v0, -0x50 04 00 84 24 addiu a0,0x4 FC FF 90 24 addiu s0,a0,-0x4 Original opcodes 07 00 80 14 bnez a0, +0x20 21 80 43 00 addu s0,v0,v1 21 10 A0 00 move v0,a1 02 00 A0 14 bnez a1, +0x0C 00 00 00 00 nop 01 00 05 24 li a1,0x1 FC FF 40 10 beqz v0, -0x0C 00 00 00 00 nop 04 00 04 26 addiu a0,s0,0x4
SLUS_211.96	0x24D92589D5	Indigo Prophecy	new SPU2 params	1
SLPM_661.93	0x608634992D	Fahrenheit (NTSC-J)	new SPU2 params	1
SLUS_212.96	0x5CA15DF14D	Dance Factory	Setting mecha HACK to show GODZCD as GODZCDDA

Inside ps2_gxemu.self/ps2_softemu.self

There are hundreds of configs hidden in ps2_gxemu, and ps2_softemu self files. Internal config structure is basing on custom hash based on Title ID, internal memory offset pointing to place where true patch instruction is, and count of used commands. When disc/iso is started emulator search for configs, and if config for selected ID exist, then emulator apply it by itself. Is not perfect way of applying patches, because some games use the same ID, but different content. Good example here is Star Wars Battlefront II SLUS-21240, where some versions of game can refuse to work because it apply bad patch.

PS2 Title	Hash	Game	Patch Type	Data

Known Emulation Bugs

This list known bugs inside emulator code that make emulation inaccurate. Since those are only EE side bugs for now, ps2_gxemu/ps2_netemu/ps_softemu share the same issues.

Bug	Description	Known Affected Games
Missing Emotion Engine Data Cache emulation	Emulating that is literally not possible without making games run at 3 fps. Fixed by patches to game image, or EE code. Instruction Cache (not Data) seems to be implemented, at least partially.	Ice Age 2, DOA2: Extreme, Nascar 2009.
Branch delay slot violation not supported on EE	Some games have Branch instruction inside Branch delay slots, this is not emulated correctly on EE (VU have proper emulation of that). This is patched in configs by rearangging MIPS code.	WRC 3,4,Rally Evolved, one of Action Replay discs.
Unmapped write only EE memory (confirmed only for SIF)	Reads/Writes to 0x2000000+ shouldn't throw bus error on dma transfers. Write should be performed as successful, memory should stay unchanged. Reads should return 0.	Games developed by In Utero, while creating initial save file, send DMA where address is EE stack pointer. At the time of transfer start $sp is too high, and requested transfer size make MADR overflow above 0x2000000 at some point. This is game bug, and happen also on real hardware. Fixed by config.
VIF bugs	There is no correct timing, and queuing for some VIF commands like MSCAL.	Snowblind Engine games. Probably more.
XGKick is instant	Some games expect to XGKick happen few cycles in future, on PS3 is done instant. Fixed by config 0x07 which delay XGKick by selected value	WRC series, Wakeboarding Unleashed, TriAce games, World of Outlaws - Sprint Cars, Ty - The Tazmanian Tiger, dot Hack - G.U. series, and more
COP2 instructions are instant	Some games rely on fact that COP2 operations can take some time, on PS3 emulators they are done instantly due to lack of correctly emulated pipeline Patched by rearranging mips code	FFX, FFX-2, Ghost in The Shell SAC, Ace Combat series, Sprint Cars 1/2, Black, Run Like Hell, Everblue 2, Dragon Quest - Shounen Yangus no Fushigi na Daibouken, and many more
VU0 is not running in sync with EE core	VU0 is running program "at once", which mean that VU0 run until it hits E bit. From EE perspective it looks like whole VU0 program run in 1 cycle. Games that expect VU0 registers to be changed from EE side while VU0 is running are broken due to that. Partially resolved using 0x12 command with 2/3 subcommands, or by code rearranging.	24 The Game, ATV Quad Power Racing 2, Twisted Metal Head-On, Primal, Ghosthunter, Rayman Arena, Rayman 3, Largo winch. All games using M-bit.
M-Bit not supported	Emulator ignore VU0 M-Bit, that cause issues for games that need it to work correctly. This is done because there is no way to sync correctly running VU0 without sync with EE. Partially resolved on emu using 0x12 command with 2/3 subcommands, or direct VU0/MIPS code rearranging.	Totally Spies! Totally Party, Mike Tyson Heavyweight Boxing, My Street, Crash Twinsanity, Marvel Nemesis, Panzer Elite Action - Fields of Glory, TriAce games (speed optimizations only), Super Monkey Ball Adventure, most Eko Software games, and many more.
T-Bit not supported on VU0	Emulator ignore VU0 T-Bit, that cause issues for games that need it to work. Note: T-Bit is correctly handled for VU1.	Spiderman 3 set T-Bit, then do cfc2 from TPC (address where VU0 stopped). Since T-Bit is ignored, TPC is wrong. Value is later copied to CMSAR0, and program continue at wrong address. Well that's what should happen, but T-Bit also not signalize correct bit in VPU-STAT. Causing another issue, also in Spiderman 3.
Emulator do not update correct flag instances for COP2 while ending VU0 program on Ebit	This cause few games to read bad flag status (not status flag!) on COP2. This is resolved on emu by forcing update of MAC flag on every STATUS flag read (by config 0x12), this cause slowdowns creating a lot of unnecessary operations.	Driving Emotion Type-S, State of Emergency 2, The Getaway Black Monday.
Not updated status flag when VDIV/VSQRT/VRSQRT is done on COP2	Potential bad flag state can cause a lot of issues that are not related on first sight	Yanya Caballista (already patched by custom config)
In corner cases emu select wrong block flags pipeline state (both VU0/EEonBE and VU1/VRC affected).	This can cause various issues, mostly SPS, missing graphic, specific slowdowns, etc. Issue seems to occur when branch/jump delay slot have opcode important for flags calculation. Theory is that cached microprogram don't include modified flags state from delay slot instruction. So when already recompiled program is fetched from pool, it will miss one cycle in fmac flags pipeline. This can be crucial in games that rely on it.	Tales of Legendia and Klonoa 2 set sticky flag bits to 0 and branch with sub.xyzw in delay slot (expecting that sub change status flag), Tamsoft engine games set sticky bits to 0 in branch delay slot, this was most ridiculous bug, because problematic branch was pointing to next opcode after delay slot, removing branch was enough. True Crime: NY is only known game where VU0 is affected by this bug. more..
CTC2 opcode write whole value to R register, while only 23 bits are writable. Rest is hardcoded to 0x3F800000.	Can cause many weird issues like broken physics, broken graphics. PCSX2 was also affected [more].	The one game that is known to be affected, and is already patched, is Musashi: Samurai Legend.
CFC2 from R register should return only 23 lower bits.	CFC2 from R on real PS2 return only lower 23 bits. Originally found out by PCSX2 team [more] and later confirmed to affect ps2_netemu in emu assembly.	There is only one game that is known to be affected, Onimusha Dawn of Dreams.
Missing floating point result overflow/underflow detection (U/O flags not set)	Since this affect all units (FPU/VU), many issues can occur. But in reality it seems to not affect any games. While this is easier to implement than on x86 system (full floats range, compared to ieee754), there is no way to do that by hardware way. Because SPU add/sub don't set those flags on single precision operations, and vmx have them disabled in spu compatibility mode.	Superman Returns.
DMA between SPR and VU1 memory cause emulator panic.	Currently cause is unknown. It seems that functions responsible for transfer don't check that VU is running. Manual state that dma can be performed only when VU is not active, and pcsx2 wait until VU end. Games affected in emulators on ps3 display this warning in pcsx2 if mtvu is enabled: "MTVU: SPR Accessing VU1 Memory". Affected games are fixed by rearranging code to do lq/sq loop instead of DMA.	Summoner 2 (SPRfrom to VU1 data mem), Kaena (SPRto from VU1 data mem).
IOP SIF0/1 DMA IRQs can be disabled (masked), which is not true on real hardware.	IOP interrupts 0x2A and 0x2B should always trigger. Fixed by patches to IOP code. Ps2_emu seems to be unfacted, probably handled on real hw in CXD9208GP.	Knockout Kings 2001, DOA2: Hardcore.

Software emulation bugs

Related to the GS emulation issues mostly. Apply to the ps2_netemu especially.

Bug	Description	Known Affected Games
No mipmapping support	Emulator does ignore the mipmap layers, probably for performance reasons. It is processing only the level 0 texture base pointer specified in the TEX0 register. There are games writing garbage data into that memory area, when the mipmap level is different than zero. As a result, a garbled texture is shown instead of a correct one.	Ace Combat series, Ape Escape 2, EA Sports F1 series, Harry Potter series, ICO (psuedo volumetric rays), Jak and Daxter series, Nickelodeon Barnyard and Nicktoons Unite (very strange implementation), Ratchet and Clank series and more.
SCANMSK register ignored	Emulator does ignore the SCANMSK setting responsible for restricting the drawing primitives on the odd or even lines. It is used as a fake transparency effect in some games by merging the two display circuits.	Metal Gear Solid series (water and reflection effects), Gran Turismo series (ghost cars), Raw Danger! (depth of field effect)
Missing PCRTC feedback write support	PCRTC feature that writes back the image to the frame buffer is not supported or broken. Additional RGB to YCbCr conversion could be performed there.	Xenosaga Episode I: Der Wille zur Macht (black and white cut scenes)

TitleID/DiscID in ps2_netemu.self

There are 193 titleIDs listed inside ps2_netemu.self. More precisely, into XPARAM2.ELF file of PS2 Bios included in ps2_netemu.self. XPARAM2.ELF is called by OSDSYS, then ID check is performed. If title ID match to one of included in the table, different IOP emulation settings are applied. There are internal flags related to every title ID included inside file, still unknown what they do. Also some arguments, in plain text. File in real ps2 is introduced in SCPH-750XX models so exactly when DECKARD Power PC chip exchanged original IOP chip. This can explain why it is still in PS3 netemu bios. Because PS3 it is ppc that can need the same/similar flags.

Original PS2 bios include similar list file called XPARAM.ELF, but Title IDs there are not the same, although some of them exist on both lists.

Command	Name
0x00	TITLE_MASK
0x01	SIO2_MASK
0x02	DEV9_MASK
0x03	USB_MASK
0x04	SIF_DMA_SYNC
0x05	SIF_DMA_LOAD
0x06	DMAC_CH10_INT_DELAY
0x07	MECHA_RECOGTIME
0x08	CPU_DELAY
0x09	DEV5_INT_SPEED
0x0A	CDVD_READ_DELAY
0x0B	SPU2_BEHAVIOR

ID	Title	Command	Value	Remarks
PBPX_952.01	DVD Utility Disc Version 1.00	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.02	DVD Utility Disc Version 1.01	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.03	DVD Utility Disc Version 1.01	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.06	DVD Player (Version 2.01)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.07	DVD Player (Version 2.10)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.08	DVD Player (Version 2.10)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.09	DVD Player (Version 2.10)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.10	DVD Utility Disc Version 2.10	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.11	DVD Utility Disc Version 1.00	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.21	DVD Player (Version 2.12)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.22	DVD Player (Version 2.14)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.24	DVD Player (Version 2.16)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.28		0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.35		0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_952.39	Online Start Up Disc v3.0	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_955.01	Linux for PS2 Beta Release 1	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_955.07	Playstation 2 Linux Runtime Environment v1.0 (Disc 1)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_955.09	Linux for PS2 Release 1.0	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PBPX_955.18		0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PDPX_991.09	DVD Player (Version 3.04)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PSXC_002.01	PSX Update Disc 1.10	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PSXC_002.02	PSX Update Disc 1.20	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PSXC_002.03	PSX Update Disc 1.31	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
PTPX_970.38		0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCAJ_201.25	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SCAJ_201.26	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SCES_532.02	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SCKA_200.49	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SCPM_621.15		0x00	0x1000000	TITLE_MASK
SCPM_621.16		0x00	0x1000000	TITLE_MASK
SCPN_601.01	PlayStation BB Navigator (Version 0.10)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPN_601.30	PlayStation BB Navigator (Version 0.20)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPN_601.40	PlayStation BB Navigator (Version 0.30)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPN_601.50	PlayStation BB Navigator (Version 0.31)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPN_601.60	PlayStation BB Navigator (Version 0.32)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPS_110.01	I.Q. Remix	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPS_110.10	Yoake no Mariko (Performance Pack Edition)	0x01	0x1800	SIO2_MASK
SCPS_110.18	Yoake no Mariko	0x01	0x1800	SIO2_MASK
SCPS_110.21	Yoake no Mariko 2nd Act (Limited Edition)	0x01	0x1800	SIO2_MASK
SCPS_110.22	Yoake no Mariko 2nd Act	0x01	0x1800	SIO2_MASK
SCPS_150.38	Lifeline	0x0A	0x80300	CDVD_READ_DELAY
SCPS_150.39	Lifeline	0x0A	0x80300	CDVD_READ_DELAY
SCPS_170.01	Gran Turismo 4	0x0B	0x10000000	SPU2_BEHAVIOR
SCPS_175.01	Linux (for PlayStation2) Release 1.0	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SCPS_200.39		0x00	0x4000000	TITLE_MASK
SCUS_971.67	PaRappa the Rapper 2	0x04	0x2000	SIF_DMA_SYNC
SCUS_972.69	Final Fantasy XI [Disc 2]	0x02	0xB	DEV9_MASK
SLES_500.48	Donald Duck: Quack Attack	0x01	0x800	SIO2_MASK
SLES_500.62	Orphen: Scion of Sorcery	0x08	0xC1C	CPU_DELAY
SLES_503.64	City Crisis	0x0A	0x80BB8	CDVD_READ_DELAY
SLES_504.46	Shadow Man 2: The Second Coming	0x0A	0x80600	CDVD_READ_DELAY
SLES_505.40	Simpsons: Road Rage	0x01	0x800	SIO2_MASK
SLES_506.08	Shadow Man 2: The Second Coming	0x0A	0x80600	CDVD_READ_DELAY
SLES_506.28	Simpsons: Road Rage	0x01	0x800	SIO2_MASK
SLES_507.28	Tiger Woods PGA Tour 2002	0x0A	0x803E8	CDVD_READ_DELAY
SLES_507.29		0x0A	0x803E8	CDVD_READ_DELAY
SLES_512.82	Tiger Woods PGA Tour 2003	0x0A	0x803E8	CDVD_READ_DELAY
SLES_514.79	Def Jam Vendetta	0x01	0x802	SIO2_MASK
SLES_518.41	SpyHunter 2	0x01	0x800	SIO2_MASK
SLES_518.44	Time Crisis 3	0x01	0x800	SIO2_MASK
SLES_519.97	SWAT: Global Strike Team	0x01	0x800	SIO2_MASK
SLES_520.97	SWAT: Global Strike Force	0x01	0x800	SIO2_MASK
SLES_530.37	Super Monkey Ball Deluxe	0x01	0x802	SIO2_MASK
SLES_536.68	Micro Machines v4	0x01	0x801	SIO2_MASK
SLES_537.55	Castlevania: Curse of Darkness	0x04	0x10	SIF_DMA_SYNC
SLES_537.96	FIFA Street 2	0x01	0x1800	SIO2_MASK
SLPM_620.42	Kurogane no Houkou: Warship Commander	0x01	0x3000	SIO2_MASK
SLPM_620.62	Gitaroo Man One	0x0A	0x80540	CDVD_READ_DELAY
SLPM_621.05	Taikou Risshiden IV	0x09	0x2B47000A	DEV5_INT_SPEED
SLPM_621.24	Ready 2 Rumble Boxing: Round 2	0x08	0x1388	CPU_DELAY
SLPM_621.25	Gauntlet: Dark Legacy	0x08	0xC1C	CPU_DELAY
SLPM_621.25	Gauntlet: Dark Legacy	0x09	0x2B470005	DEV5_INT_SPEED
SLPM_621.35	Final Fantasy: XI (Beta Version)	0x00	0xA0000000	TITLE_MASK, 0xA0000000 = Blacklist, boot after removing flag
SLPM_621.54	DDRMAX Dance Dance Revolution 6thMix	0x08	0x1A5E	CPU_DELAY
SLPM_622.39	Supercar Street Challenge	0x0A	0x80300	CDVD_READ_DELAY
SLPM_623.69	Karaoke Revolution: J-Pop Vol.1	0x08	0x1388	CPU_DELAY
SLPM_623.79	Karaoke Revolution: J-Pop Vol.2	0x08	0x1388	CPU_DELAY
SLPM_623.80	Karaoke Revolution: J-Pop Vol.3	0x08	0x1388	CPU_DELAY
SLPM_623.81	Karaoke Revolution: J-Pop Vol.4	0x08	0x1388	CPU_DELAY
SLPM_623.82	Karaoke Revolution: Love & Ballad	0x08	0x1388	CPU_DELAY
SLPM_623.83	Karaoke Revolution: Night Selection 2003	0x08	0x1388	CPU_DELAY
SLPM_624.14	Karaoke Revolution: Dreams & Memories	0x08	0x1388	CPU_DELAY
SLPM_624.37	Suisui Sweet: Amai Ai no Mitsukekata	0x0B	0x40000000	SPU2_BEHAVIOR
SLPM_624.50	Karaoke Revolution: Anime Song Selection	0x08	0x1388	CPU_DELAY
SLPM_624.51	Karaoke Revolution: J-Pop Vol.5	0x08	0x1388	CPU_DELAY
SLPM_624.54	Karaoke Revolution: J-Pop Vol.6	0x08	0x1388	CPU_DELAY
SLPM_624.55	Karaoke Revolution: J-Pop Vol.7	0x08	0x1388	CPU_DELAY
SLPM_624.56	Karaoke Revolution: J-Pop Vol.8	0x08	0x1388	CPU_DELAY
SLPM_624.57	Karaoke Revolution: Snow & Party	0x08	0x1388	CPU_DELAY
SLPM_624.64	Pop'n Taisen Pazurudame Online	0x08	0x1F40	CPU_DELAY
SLPM_624.79	Karaoke Revolution: J-Pop Vol.9	0x08	0x1388	CPU_DELAY
SLPM_624.91	Mega Man: The Power Battle	0x04	0x2000	SIF_DMA_SYNC
SLPM_624.92	Karaoke Revolution: Kids Song Selection	0x08	0x1388	CPU_DELAY
SLPM_625.28	Karaoke Revolution: Kazoku Idol Sengen (Bundle Edition)	0x08	0x1388	CPU_DELAY
SLPM_625.29	Karaoke Revolution: Kazoku Idol Sengen	0x08	0x1388	CPU_DELAY
SLPM_650.86	A Visual Mix: Ayumi Hamasaki Dome Tour 2001 (Disc 1)	0x08	0x1450	CPU_DELAY
SLPM_650.87	A Visual Mix: Ayumi Hamasaki Dome Tour 2001 (Disc 2)	0x08	0x1450	CPU_DELAY
SLPM_650.90	Spy Hunter	0x01	0x1800	SIO2_MASK
SLPM_651.97	Nobunaga's Ambition Online	0x02	0xB	DEV9_MASK
SLPM_652.09	Star Ocean: Till the End of Time	0x0B	0x20014	SPU2_BEHAVIOR
SLPM_654.38	Star Ocean: Till the End of Time (Director's Cut) (Disc 1)	0x0B	0x20014	SPU2_BEHAVIOR
SLPM_654.39	Star Ocean: Till the End of Time (Director's Cut) (Disc 2)	0x0B	0x20014	SPU2_BEHAVIOR
SLPM_654.88	Grand Theft Auto: Vice City	0x0A	0x300	CDVD_READ_DELAY
SLPM_654.88	Grand Theft Auto: Vice City	0x09	0x36000200	DEV5_INT_SPEED
SLPM_656.33	I Love Baseball: Pro Yakyu wo Koyonaku	0x08	0xFA0	CPU_DELAY
SLPM_656.98	Love Songs: ADV Futaba Riho 14-sai Natsu	0x0A	0x80380	CDVD_READ_DELAY
SLPM_657.05	Final Fantasy XI: Chains of Promathia (Expansion Disc)	0x02	0xB	DEV9_MASK
SLPM_657.06	Final Fantasy XI: Chains of Promathia (All-In-One Edition)	0x02	0xB	DEV9_MASK
SLPM_657.19	Burnout 3: Takedown	0x01	0x1C00	SIO2_MASK
SLPM_657.83	Nobunaga no Yabou Online: Tappi no Shou	0x02	0xB	DEV9_MASK
SLPM_658.94	Winning Post 6: 2005 Version	0x01	0x2400	SIO2_MASK
SLPM_659.34	Maple Colors	0x0A	0x80300	CDVD_READ_DELAY
SLPM_659.53	Final Fantasy: XI (Entry Disc 2005)	0x02	0xB	DEV9_MASK
SLPM_659.84	Grand Theft Auto: San Andreas	0x0A	0x803E8	CDVD_READ_DELAY
SLPM_660.33	The Sword of Etheria	0x08	0xC1C	CPU_DELAY
SLPM_660.33	The Sword of Etheria	0x00	0x2000000	TITLE_MASK
SLPM_660.48	The Sword of Etheria	0x08	0xC1C	CPU_DELAY
SLPM_660.48	The Sword of Etheria	0x00	0x2000000	TITLE_MASK
SLPM_660.57	Taito Memories Vol.1	0x08	0xCE4	CPU_DELAY
SLPM_661.56	Marheaven: Arm Fight Dream	0x01	0x1800	SIO2_MASK
SLPM_661.75	Akumajo Dracula: Yami no Juin	0x08	0x60	CPU_DELAY
SLPM_661.75	Akumajo Dracula: Yami no Juin	0x0B	0x2001C	SPU2_BEHAVIOR
SLPM_663.93	Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)	0x0A	0x803E8	CDVD_READ_DELAY
SLPM_663.93	Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)	0x09	0x2B47000A	DEV5_INT_SPEED
SLPM_663.93	Final Fantasy XI: Treasures of Aht Urhgan (All-In-One Edition)	0x02	0xB	DEV9_MASK
SLPM_663.94	Final Fantasy XI: Treasures of Aht Urhgan	0x02	0xB	DEV9_MASK
SLPM_664.36	Aria the Natural	0x01	0x1800	SIO2_MASK
SLPM_664.36	Aria the Natural	0x00	0xA000000	TITLE_MASK
SLPM_665.39	Nobunaga no Yabou Online: Haten no Shou	0x02	0xB	DEV9_MASK
SLPM_665.58	Tomb Raider: Legend	0x08	0x3E8	CPU_DELAY
SLPM_665.74	Detective Evangelion	0x00	0x2000000	TITLE_MASK
SLPM_680.07	Karaoke Revolution (Trial)	0x08	0x1388	CPU_DELAY
SLPM_680.10		0x08	0x1388	CPU_DELAY
SLPS_200.08	Morita Shogi	0x08	0x1388	CPU_DELAY
SLPS_200.20	FIFA 2000 World Championship	0x04	0x2001	SIF_DMA_SYNC
SLPS_200.37	Go Go Golf	0x09	0x2B47000A	DEV5_INT_SPEED
SLPS_200.38	Grappler Baki: Baki Saidai no Tournament	0x08	0x1194	CPU_DELAY
SLPS_200.53	Tenshi no Present: Marle Oukoku Monogatari (Limited Edition)	0x0B	0x20000000	SPU2_BEHAVIOR
SLPS_200.66	Tenshi no Present: Marle Oukoku Monogatari	0x0B	0x20000000	SPU2_BEHAVIOR
SLPS_201.01	City Crisis	0x0A	0x80BB8	CDVD_READ_DELAY
SLPS_201.11	Magical Sports Pro Baseball 2001	0x09	0x2B47000A	DEV5_INT_SPEED
SLPS_201.72	Koushien: Konpeki no Sora	0x09	0x2B47000A	DEV5_INT_SPEED
SLPS_201.73	Hard Hitter 2	0x0A	0x80300	CDVD_READ_DELAY
SLPS_201.97	Surfing Air Show with RatBoy	0x09	0x2B47000A	DEV5_INT_SPEED
SLPS_201.99	F1 2002	0x0B	0x20005	SPU2_BEHAVIOR
SLPS_202.00	Final Fantasy XI	0x02	0xB	DEV9_MASK
SLPS_204.04	Rakushou! Pachi-Slot Sengen 2	0x0A	0x80300	CDVD_READ_DELAY
SLPS_204.29	Hissatsu Pachi-Slot Evolution: Ninja Hattori-Kun V	0x08	0x1B58	CPU_DELAY
SLPS_204.55	Simple 2000 Series Vol.94: The Aka-Champion - Come on Baby	0x0B	0x40000000	SPU2_BEHAVIOR
SLPS_250.08	Sorcerous Stabber Orphen	0x08	0xC1C	CPU_DELAY
SLPS_250.71	A Visual Mix: Ayumi Hamasaki Dome Tour 2001	0x08	0x1450	CPU_DELAY
SLPS_250.72	A Visual Mix: Ayumi Hamasaki Dome Tour 2001	0x08	0x1450	CPU_DELAY
SLPS_250.81	Saishuu Densha	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_251.36	Kuon no Kizuna Sairin Mikotonori	0x0A	0x805DC	CDVD_READ_DELAY
SLPS_251.42	Tiger Woods PGA Tour 2002	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_251.50	Only You	0x0B	0x40000000	SPU2_BEHAVIOR
SLPS_252.37	Only You	0x0B	0x40000000	SPU2_BEHAVIOR
SLPS_252.75	Def Jam: Vendetta	0x01	0x802	SIO2_MASK
SLPS_252.78	Memories Off: Mix	0x0A	0x80300	CDVD_READ_DELAY
SLPS_252.90	Time Crisis 3	0x01	0x800	SIO2_MASK
SLPS_253.15	One Piece: Grand Battle 3	0x01	0x1800	SIO2_MASK
SLPS_253.57	3-Nen B-Gumi Kinpachi Sensei: Densetsu no Kyoudan ni Tate!	0x01	0x1800	SIO2_MASK
SLPS_253.79	Tokyo Majin Gakuen: Kaihoujyou Kefurokou	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_254.06	Hitman: Contracts	0x08	0xDAC	CPU_DELAY
SLPS_254.18	Ace Combat 5: The Unsung War	0x0A	0x500000	CDVD_READ_DELAY
SLPS_255.10	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SLPS_255.85	Monster Farm 5: Circus Caravan	0x07	5	MECHA_RECOGTIME
SLPS_255.86	Tales of the Abyss	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_256.04	Ar tonelico Qoga: Knell of Ar Ciel	0x00	0xA000000	TITLE_MASK
SLPS_256.67	Daito Giken Premium Pachi-Slot Collection: Yoshimune	0x01	0x1800	SIO2_MASK
SLPS_256.98	Fatal Fury Battle Archives Volume 2	0x00	0xA000000	TITLE_MASK
SLPS_257.08	The Familiar of Zero (Limited Edition)	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_257.09	The Familiar of Zero	0x0A	0x803E8	CDVD_READ_DELAY
SLPS_257.21	HimeHibi - Princess Days	0x0B	0x8000000	SPU2_BEHAVIOR
SLPS_257.22	Routes PE (Limited Edition)	0x08	0x3E8	CPU_DELAY
SLPS_257.27	Routes PE	0x08	0x3E8	CPU_DELAY
SLPS_732.49	Ar tonelico Qoga: Knell of Ar Ciel (Platinum)	0x00	0xA000000	TITLE_MASK
SLUS_200.11	Orphen: Ocion of Sorcery	0x08	0x1388	CPU_DELAY
SLUS_200.11	Orphen: Ocion of Sorcery	0x09	0x8000010	DEV5_INT_SPEED
SLUS_200.77	Donald Duck: Go'in Quackers	0x01	0x800	SIO2_MASK
SLUS_202.74	City Crisis	0x0A	0x80BB8	CDVD_READ_DELAY
SLUS_203.05	Simpsons: Road Rage	0x01	0x800	SIO2_MASK
SLUS_203.64	Tiger Woods PGA Tour 2002	0x0A	0x803E8	CDVD_READ_DELAY
SLUS_204.13	Shadowman 2	0x0A	0x80600	CDVD_READ_DELAY
SLUS_204.33	SWAT: Global Strike Team	0x01	0x800	SIO2_MASK
SLUS_204.88	Star Ocean: Til the end of Time [Disc 1]	0x08	0x1388	CPU_DELAY
SLUS_205.72	Tiger Woods PGA Tour 2003	0x0A	0x803E8	CDVD_READ_DELAY
SLUS_205.90	Spyhunter 2	0x01	0x800	SIO2_MASK
SLUS_206.35	Muppets Party Cruise	0x01	0x801	SIO2_MASK
SLUS_206.39	Def Jam Vendetta	0x01	0x800	SIO2_MASK
SLUS_206.86	Splashdown: Rides Gone Wild	0x0A	0x80400	CDVD_READ_DELAY
SLUS_208.38	All-Star Baseball 2005	0x01	0x802	SIO2_MASK
SLUS_208.51	Ace Combat 5: The Unsung War	0x0A	0x500000	CDVD_READ_DELAY
SLUS_208.91	Star Ocean: Til the end of Time [Disc 2]	0x08	0x1388	CPU_DELAY
SLUS_209.18	Super Monkey Ball: Deluxe	0x01	0x800	SIO2_MASK
SLUS_210.59	Tekken 5	0x0B	0x40000000	SPU2_BEHAVIOR
SLUS_210.70	Final Fantasy XI: Chains of Promathia	0x02	0xB	DEV9_MASK
SLUS_210.89	Karaoke Revolution Vol.3	0x08	0x1388	CPU_DELAY
SLUS_213.31	Sonic Riders	0x01	0x800	SIO2_MASK
SLUS_213.39	Puzzle Challenge	0x01	0x800	SIO2_MASK
SLUS_214.04	Final Fantasy XI: Treasures of Aht Urhgan	0x02	0xB	DEV9_MASK
SLUS_214.52	Valkyrie Profile 2: Silmeria	0x08	0x1388	CPU_DELAY

Other game patches (unofficial)

There are other unofficial ways to patch the PS2 games such the pnach format, or the widescreen patches that allows 16:9 screen output for some games by hex editing the ISO, or by applying ppf patches. Games work fine on PS3 with same compatibility like before patching. Also some 480p (aka progressive scan) patches work fine. http://ps2wide.net/

The problem of this methods is the patch is applyed over the ISO and is modifyed permanently, but this problem can be avoided in PS3 because that unofficial patches can be "ported" to the official config format to be used by ps2_netemu.self, by using the official config format the settings and patchs from the config file are applyed "on the fly" and the ISO is not modifyed

ps2_title_brute code

A script to calculate cdvd key magic used in ps2emu, gxemu and softemu from given input title id. On real PS2 this value seems to be stored at 0x1F402020-0x1F402024. It contains code for bruting as well. Just call gen_sum with the title id in a specific format to get it.

title_ = "SLUS_200.73"

#patches = [0x6b1ade00dL, 0x23d92589c5L, 0x24d92589d5L, 0x608634992dL, 0x5ca15df14dL]
#patches = [0x37ae1cb18dL, 0x608634999dL, 0x06b1ade00dL, 0x5fc674d915L, 0x178e3c9165L, 0x3889349935L,0x18fe4ce145L,0xc126943985,0xe90ebc11b5,0x58be0ca165L]
patches = [ 0xCD1298155L, 0x12C93199A5L, 0x15C93199ADL, 0x24D92589A5L, 0x2CD12D8125L, 0x34C9359935L, 0x34C93599E5L, 0x34C93599E5L, 0x449961C9E5L, 0x4C9169C1CDL, 0x4C9169C1D5L, 0x4C9169C1DDL, 0x4C9169C1E5L, 0x4C9169C1F5L, 0x4C9169C1FDL, 0x4CB14DE12DL, 0x54A955F915L, 0x5CA15DF165L, 0x5CA15DF1FDL, 0x5CA15DF1FDL, 0x649965C94DL, 0x649965C955L, 0x649965C95DL, 0x649965C965L, 0x649965C96DL, 0x6BB149E15DL, 0x6C916DC165L, 0x6C916DC1A5L, 0x6C916DC1ADL, 0x6C916DC1B5L, 0x6C916DC1D5L, 0x6C916DC1DDL, 0x748975D9DDL, 0x7C817DD125L, 0x7C817DD165L, 0x7C817DD16DL, 0x7C817DD175L, 0x7C817DD1CDL, 0x84798529BDL, 0x8559A109ADL, 0x8579852915L, 0x8579852965L, 0x8D51A90145L, 0x8D51A901B5L, 0x8D51A901BDL, 0x8D718D21BDL, 0x9C619D31E5L, 0x9D41B911ADL, 0x9D619D31C5L, 0x9F29357805L, 0x9F293578E5L, 0xB549B51915L, 0xB549B51925L, 0xB549B5195DL, 0xB549B519A5L, 0xB549B519ADL, 0xBC61793025L, 0xBD41BD1105L, 0xC439C569F5L, 0xC7716D20D5L, 0xC7716D20D5L, 0xCA11E941F5L, 0xCF7965285DL, 0xCF7965285DL, 0xD20911582DL, 0xD7617D308DL, 0xE339C1695DL, 0xE794CCB06DL, 0xEA3129608DL, 0xEC11ED4115L, 0xEF594508D5L, 0xF409F559ADL, 0xF7415D10E5L, 0xF7415D10E5L]

def gen_sum(title):
        var_30 = []
        for i in range(0x1A):
                var_30.append(0)
        r9=5
        r31=0
        #Title 2 decimal
        while r9 != 0xB:
                r11 = r9 + 1
                if r9 == 8:
                        pass
                else:
                        r5 = ord(title[r9:r9+1])
                        r7 = r31 * 0xA
                        r6 = r7 & 0xFFFFFFFF
                        r4 = r5 + r6
                        r9 = r4 - 0x30
                        r31 = r9 & 0xFFFFFFFF
                r9 = r11
        #print r31
        r10 = ord(title[3:4]) # S
        r7 = (r31 >> 10) & 0x7F
        r11 = ord(title[1:2]) # L
        r8 = ord(title[2:3])  # U
        r6 = (r10 >> 1) & 0x3F
        r12 = ord(title[0:1]) # S
        r4 = (r11 >> 3) & 0xF
        r5 = (r8 >> 2) & 0x1F
        r3 = (r12 >> 4) & 7
        r9 = r10 << 7
        r0 = r8 << 6
        r10 = r11 << 5
        r8 = r12 << 4
        r12 = r31 << 3
        r11 = r10 | r5
        r9 = r9 | r7
        r0 = r0 | r6
        var_30[2] = r11 & 0xFF
        r7 = r8 | r4
        var_30[0] = (r9 & 0xFF)
        r10 = r12 | r3
        var_30[1] = (r0 & 0xFF)
        r12 = (r31 >> 2) & 0x3FFFFFF8
        var_30[3] = (r7 & 0xFF)
        r8 = 5
        var_30[4] = (r10 & 0xFF)
        var_30[0x19] = (r12 & 0xFF)
        var_30[0x18] = (r8 & 0xFF)
        var_30 = [int(v) for v in var_30]
        #print [hex(v) for v in var_30]
        r5 = var_30
        r6 = 0
        r4 = 0
        while r6 < 5:
                r12 = r5[r6:r6+1][0]
                r7 = r6 + 1
                r0 = var_30[0x19]
                r3 = r6 + 0x10
                r9 = r12 ^ r0
                r31 = r3
                r5[r6] = r9
                r6 = r7
                r5[r31] = r4
        #print [hex(v) for v in r5]
        r9 = 0
        r10 = 0
        while r10 < 5:
                r11 = r10 + 1
                r6 = r5[r10:r10+1][0]
                r4 = r9 << 8
                r10 = r11
                r9 = r4 | r6
        return r9
'''
print hex(gen_sum(title_))

a1='A'
a2='A'
a3='A'
a4='A'
while a1 <= 'Z':
        a2='A'
        a3='A'
        a4='A'
        while a2 <= 'Z':
                a3='A'
                a4='A'
                while a3 <= 'Z':
                        a4='A'
                        while a4 <= 'Z':
                                #print "%s%s%s%s" % (a1,a2,a3,a4)
                                for i in range(99999):
                                        t = "%s%s%s%s_" % (a1,a2,a3,a4) + '{4}{3}{2}.{1}{0}'.format(i%10,(i/10)%10,(i/100)%10,(i/1000)%10,(i/10000)%10)
                                        if gen_sum(t) in patches:
                                                print t
                                                print True
                                a4=chr(ord(a4)+1)
                                print "%s%s%s%s" % (a1,a2,a3,a4)
                        a3=chr(ord(a3)+1)
                        print "%s%s%s%s" % (a1,a2,a3,a4)
                a2=chr(ord(a2)+1)
        a1=chr(ord(a1)+1)
'''

print hex(gen_sum("SLUS_213.86"))
'''
for i in range(99999):
        t = "SLUS_" + '{4}{3}{2}.{1}{0}'.format(i%10,(i/10)%10,(i/100)%10,(i/1000)%10,(i/10000)%10)
        if gen_sum(t) in patches:
                print "%s %x" % (t, gen_sum(t))

'''

Alternative script version for better readability. Work same way as one above, just cleaner looking code.

ID = "SLUS_202.02"

def gen_sum2(title):

        decimal_id = 0
        decimal_id += ( ord(title[10:11]) - 0x30)
        decimal_id += ((ord(title[9:10])  - 0x30) * 10)
        decimal_id += ((ord(title[7:8])   - 0x30) * 100)
        decimal_id += ((ord(title[6:7])   - 0x30) * 1000)
        decimal_id += ((ord(title[5:6])   - 0x30) * 10000)
        
        first_char  = ord(title[0:1])
        second_char = ord(title[1:2])
        third_char  = ord(title[2:3])
        fourth_char = ord(title[3:4])
        
        temp0  = (first_char  >> 4) & 7
        temp1  = (second_char >> 3) & 0xF
        temp2  = (third_char  >> 2) & 0x1F
        temp3  = (fourth_char >> 1) & 0x3F
        temp4  = (first_char  << 4)
        temp5  = (second_char << 5)
        temp6  = (third_char  << 6)
        temp7  = (fourth_char << 7)
        
        temp8  = (decimal_id >> 10) & 0x7F
        temp9  = (decimal_id << 3 )
        temp10 = (decimal_id >> 2 ) & 0xF8

        temp8 |= temp7
        temp3 |= temp6
        temp2 |= temp5
        temp1 |= temp4
        temp0 |= temp9
        
        temp8 &= 0xFF
        temp3 &= 0xFF
        temp2 &= 0xFF
        temp1 &= 0xFF
        temp0 &= 0xFF
        
        temp8 ^= temp10
        temp3 ^= temp10
        temp2 ^= temp10
        temp1 ^= temp10
        temp0 ^= temp10        

        result = (temp0 | (temp1 << 8) | (temp2 << 16) | (temp3 << 24) | (temp8 << 32))
        return result

print(hex(gen_sum2(ID)))

Alternative implementation: https://github.com/PCSX2/pcsx2/blob/1a3d77b2c0c6b57313f0dceaf5ecc3f8cb453497/pcsx2/CDVD/CDVD.cpp#L545

External References

• Digital Foundry vs. PS2 Classics on PS3
• PS2 Classics Algorithm By flatz
• C port
• Alternative Compatibility List (outdated)
• How to properly convert Final Fantasy XII: IZJS For ps2classics
• Wikipedia list of officially released PS2 Classics

CPU-GPU intensive games + games only playable in software render on PCSX2:

• http://wiki.pcsx2.net/index.php/Category:GPU_intensive_games
• http://wiki.pcsx2.net/index.php/Category:CPU_intensive_games
• http://wiki.pcsx2.net/index.php/Category:Software_rendering_only_games