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= Overview =
Several arcade systems have been built around the PS2 hardware. While some systems use almost stock PS2 hardware (the Konami Python 2 going as far as cramming an entire unmodified SCPH-50000 console into the arcade chassis), other systems use a more custom approach with later Namco systems being based on entirely custom motherboards.
Sony provided some PS2 chassis specifically for use in arcade systems. These are:
* COH-H30000
** Based on B-chassis GH-004 together with it's daughterboard (GD-011)
** Differences compared to normal retail GH-004 boards include (but are not necessariliy limited to):
*** Special [[MechaCon]] version (CXP102064-'''651R''')
*** Special [[SysCon]] version on the daughterboard (1V86)
*** Special arcade BIOS
*** Missing expansion bay connector
*** Missing one of two [[CDVD Drive]] connectors
*** Missing IC205 (digital video encoder)
*** Missing [[Drivers|Driver ICs]] for the [[CDVD Drive]]
*** Missing some more small components
*** A special connector is installed on normally unpopulated pads
* COH-H31000
** Based on C-chassis (GH-006?) together with it's daughterboard (GD-013?)
* COH-H31100
** Based on C-chassis GH-006 '''without''' it's daughterboard (the daughterboard's functionality including SysCon is now provided by another board inside the arcade system)
** Differences compared to normal retail GH-006 boards include (but are not necessariliy limited to):
*** Special MechaCon version (CXP102064-'''651R''')
*** Special arcade BIOS (A 000 010)
*** Missing expansion bay connector
*** Missing [[CDVD Drive]] connector
*** Missing [[SSBUS controller]]
*** Missing IC205 (digital video encoder)
*** A special connector is installed on normally unpopulated pads
= Arcade systems =
==Konami Python==
==Konami Python==
====Specifications====
====Specifications====
''Note: Based on COH-H31000 (see above).''
''Note: Basically just a B-chassis GH-004 PS2 board with it's accompanying daughter boards''
 
''Note: Another variant is based around a slightly modified C-chassis GH-006 or GH-007 PS2 board. Has it's own model number by Sony: COH-H31000. This has also been used in some Namco System 246 units.''


====Known games====
====Known games====
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==Konami Bemani Python==
==Konami Bemani Python==
====Specifications====
====Specifications====
''Note: Based on COH-H31000 (see above).''
''Note: Basically just a B-chassis GH-004 PS2 board with it's accompanying daughter boards''


====Known games====
====Known games====
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*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: 32 MB 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Graphics memory: 4MB eDRAM
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*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: 32 MB 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Graphics memory: 4MB eDRAM
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====Specifications====
====Specifications====
* Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz (Overclocking to 299 MHz on System 256), with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz (Overclocking to 299 MHz on System 256), with 128-bit SIMD capabilities
* Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
* System memory: 32 MB 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
* Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
* Graphics memory: 4MB eDRAM
*Graphics memory: 4MB eDRAM (8MB on System 256)
* Sound: "SPU1+SPU2"
*Sound: "SPU1+SPU2"
* Security: 8 MB 3.3V NAND FlashROM Security Dongle (basically a PS2 Memory Card with a different MagicGate IC), which the system will actually boot and load more game-specific storage device drivers from
*Media: CD-ROM, DVD-ROM, Hard Disk Drive, 64 MBit 3.3V NAND FlashROM Security Dongle
* Media:  
 
** CD-ROM
''Note: Based around a slightly modified B-chassis GH-004 PS2 board (e.g. some different connectors and special [[MechaCon]] firmware). Has it's own model number by Sony: COH-H30000.''
** DVD-ROM
 
** Hard Disk Drive
''Note: A second variant is based around a slightly modified C-chassis GH-006 PS2 board. Has it's own model number by Sony: COH-H31000.''


The System 246 exists in 4 main revisions ([https://wiki.arcadeotaku.com/w/Namco_System_246/256 Source]):
''Note: A third variant is also based around a slightly modified C-chassis GH-006 PS2 board. Has it's own model number by Sony: COH-H31100.''
* The first variant (System 246 "Driving") is built around the Sony COH-H30000 (see above) and does not have a JAMMA interface
* A second variant (System 246 Rev.A) is still built around the Sony COH-H30000 (see above), but has different Namco boards and a JAMMA interface (except in the "Gun" variant)
* A third variant (System 246 Rev.B) is usually built around the Sony COH-H31100 (see above), although rare cases of it being built around a COH-H30000 are known. It also features a lot of other changes
* A fourth variant (System 246 Rev.C) is based on a fully custom board (similar, but not identical to System 256, and still with separate EE and GS) and comes in a much smaller enclosure


====Known games====
====Known games====
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*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 299 MHz, with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 299 MHz, with 128-bit SIMD capabilities
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: '''64 MB''' 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Graphics memory: 8MB eDRAM
*Sound: "SPU1+SPU2"
*Sound: "SPU1+SPU2"
* Security: 8 MB 3.3V NAND FlashROM Security Dongle (basically a PS2 Memory Card with a different MagicGate IC), which the system will actually boot and load more game-specific storage device drivers from
*Media: CD-ROM, DVD-ROM, Hard Disk Drive, 64 MBit 3.3V NAND FlashROM Security Dongle
* Media:  
** CD-ROM
** DVD-ROM
** Hard Disk Drive


''Note: Based on a fully custom board around [[EE+GS]]''
''Note: Based on a fully custom board around [[EE+GS]]''
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*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 299 MHz, with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 299 MHz, with 128-bit SIMD capabilities
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: '''64 MB''' 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Graphics memory: 8MB eDRAM
*Sound: "SPU1+SPU2"
*Sound: "SPU1+SPU2"
* Security: 8 MB 3.3V NAND FlashROM Security Dongle (basically a PS2 Memory Card with a different MagicGate IC), which the system will actually boot and load more game-specific storage device drivers from
*Media: CD-ROM, DVD-ROM, Hard Disk Drive, 64 MBit 3.3V NAND FlashROM Security Dongle
* Media:  
** CD-ROM
** DVD-ROM
** Hard Disk Drive


''Note: Based on a fully custom board around [[EE+GS]]''
''Note: Based on a fully custom board around [[EE+GS]]''
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*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: 32 MB 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*System memory: 32 MB RIMM 3200 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Graphics memory: 4MB eDRAM
*Sound: "SPU1+SPU2"
*Sound: "SPU1+SPU2"
*Media: Onboard NAND flash
*Media: 64 MBit 3.3V NAND FlashROM Security Dongle? Integrated ROM.


''Note: Based on a fully custom board around [[EE+GS]]. This is an extremely stripped down system; there isn't even a MechaCon (unlike with System 246/256), so this system deviates a lot from standard PS2 architecture. It uses onboard flash storage to store the game software.''
''Note: Based on a fully custom board around [[EE+GS]]''


====Known games====
====Known games====
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*Medal No Tatsujin 2  
*Medal No Tatsujin 2  
*Pac-Man Battle Royale  
*Pac-Man Battle Royale  
*Pac-Man's Arcade Party (can also be System 148?)
*Pac-Man's Arcade Party


==Namco System 148==
==Namco System 148==
====Specifications====
====Specifications====
*Main CPU: MIPS III R5900-based "Emotion Engine", 64-bit RISC operating at 294.912 MHz, with 128-bit SIMD capabilities
''Note: Based on a fully custom board around [[EE+GS]] which is almost identical to that of Namco System 147''
*Sub CPU: MIPS II R3000A IOP with cache at 33.8688 MHz
*System memory: '''64''' MB 32-bit dual-channel (2x 16-bit) RDRAM (Direct Rambus DRAM) @ 400 MHz, 3.2 GB/s peak bandwidth
*Graphics: "Graphics Synthesizer" operating at 147.456 MHz
*Graphics memory: 4MB eDRAM
*Sound: "SPU1+SPU2"
*Media: Onboard NAND flash
 
''Note: Based on a fully custom board around [[EE+GS]]. This is an extremely stripped down system; there isn't even a MechaCon (unlike with System 246/256), so this system deviates a lot from standard PS2 architecture. It uses onboard flash storage to store the game software.''
 
''Mostly identical to System 147, but RAM has been doubled to 64 MB and a connector has been removed. Boards with a copyright date as late as 2014 exist.''


====Known games====
====Known games====
* Animal Kaiser
* Animal Kaiser
* Pac-Man's Arcade Party (can also be System 147?)
* Umimonogata Lucky Marine Theater (海物語ラッキーマリンシアター)
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