PS2bootparam.dat

PS2 boot param file stored in dev_hdd0/tmp/game/ps2bootparam.dat used to pass settings from GameOS to emulator after unloading LV2.

File layout

Name	offset	size	type	notes
rtc_epoch	0x00	0x08	u64	time since epoch in seconds (hex)
target_id	0x08	0x02	u16	Product_Code
toggle_XO	0x0A	0x01	u8	1 - (X enter and O back), 0 - (O enter and X back)
boot_type	0x0B	0x01	u8	known used value 0x00 (hdd install?) / 0x01 / 0x02 / 0x03 ("2P" classic)
ps2_title_id	0x0C	unk (at least 0x0A)	string	SLES50920
_	0x2C	0x01	u8	_
system_lang	0x2D	0x01	u8	2 digits code from Languages is used (in hex form)
time_zone	0x2E	0x02	u16	sys_time_get_timezone(), known value 0x3E
summer_time	0x30	0x01	u8	"/setting/dateTime/summerTime", known value 0
net_device	0x31	0x01	u8	xsettings "/setting/net/device", known value 1 (enabled wifi?)
wlan_ssid	0x32	0x21	string	32 characters + null terminator
_	0x52	0x01	u8	_
net_authProto	0x53	0x01	u8	"/setting/net/authProto", known value 7 (wlan encryption type?)
wlan_pass	0x54	0x40	string	63 + null terminator
_	0x94	0x01	u8	_
_	0x98	0x04	unk	_
_	0x9C	0x01	u8	_
_	0x9E	0x02	u16	_
_	0xA0	0x04	unk	_
_	0xA4	0x01	u8	_
_	0xA6	0x02	u16	_
_	0xA8	0x04	unk	_
_	0xAC	0x01	u8	_
_	0xAE	0x02 (?)	unk	_
color_space	0x118	0x02	u16	_
video_mode	0x11A	0x02	u16	max possible value 0x3FFF, known value 0x702
display_type	0x11C	0x01	u8	_
sound_type	0x11D	0x01	u8	_
_	0x11E	unk	string	_
_	0x220	0x04	u32	_
net_enable	0x224	0x01	u8	xregistry "/setting/net/enable"
_	0x225	0x01	u8	xregistry "/setting/net/aoss/aossFlag"
_	0x226	0x188	unk	_
_	0x246	0x1	u8	_
_	0x3AF	0x04	unk	_
_	0x3B3	0x04	unk	_
_	0x3B7	0x01	unk	_
_	0x3BB	0x04	unk	_
_	0x3BC	0x04	unk	_
_	0x3C0	0x04	unk	_
_	0x3CC	0x80	unk	_
_	0x44C	0x80	unk	_
up_convert	0x4CC	0x01	u8	_
_	0x4CD	0x01	u8	_
rgb_output_range	0x4CE	0x01	u8	_
_	0x4D0	0x08	u64	known value 0x800000001000007
_	0x4D8	0x01	u8	_

Note: This table for now only cover first 0x4F0 of file, next block are controllers settings.
Current layout of this file is very different than the one above.