Editing Talk:CXD9208GP
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If you are looking for most misunderstood chip on COK-001, here it is. Someone made here really wrong assumption, thinking that this chip is connected to | If you are looking for most misunderstood chip on COK-001, here it is. Someone made here really wrong assumption, thinking that this chip is connected to | ||
CXM4024R. So, what we got here? IOP. Yup, ps2 Input/Output processor, just like mentioned above. Very special, and very stripped most likely PPC405 based IOP. Most important hint about supposed connection to multiAV being wrong, is fact that there is no single trace on motherboard that really goes there. Neither on top or bottom of mainboard, sure i didn't delayered COK-001 motherboard, but just look also at CXM4024R. There is no connection there, and pinout is rather visible. Next thing is visual comparison of COK-001 with PS2 GH-051 which use EE+GS with the same pinout as PS3 version.<br> | CXM4024R. So, what we got here? IOP. Yup, ps2 Input/Output processor, just like mentioned above. Very special, and very stripped most likely PPC405 based IOP. Most important hint about supposed connection to multiAV being wrong, is fact that there is no single trace on motherboard that really goes there. Neither on top or bottom of mainboard, sure i didn't delayered COK-001 motherboard, but just look also at CXM4024R. There is no connection there, and pinout is rather visible. Next thing is visual comparison of COK-001 with PS2 GH-051 which use EE+GS with the same pinout as PS3 version.<br> | ||
PS2: https:// | PS2: https://imgur.com/yC5XQuG<br> | ||
PS3: https://www.psdevwiki.com/ps3/images/9/9d/COK-001_TOP.JPG<br> | PS3: https://www.psdevwiki.com/ps3/images/9/9d/COK-001_TOP.JPG<br> | ||
Similar, isn't it? All traces that on PS2 goes to IOP, on PS3 go to that chip. More than that IOP used in PS2 have part number CXD9209GP, our chip is CXD9208GP.<br> | Similar, isn't it? All traces that on PS2 goes to IOP, on PS3 go to that chip. More than that IOP used in PS2 have part number CXD9209GP, our chip is CXD9208GP.<br> | ||
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The chip/package looks very similar to the CXD9731GP SPEED [https://ps2drives.x-pec.com/images/guide_westerndigital/easymod/DSC00159.jpg] chip. That makes sense since (early) SPEED partly functions as a PCI <-> SSBUS adapter. | The chip/package looks very similar to the CXD9731GP SPEED [https://ps2drives.x-pec.com/images/guide_westerndigital/easymod/DSC00159.jpg] chip. That makes sense since (early) SPEED partly functions as a PCI <-> SSBUS adapter. | ||
[[User:M4j0r|M4j0r]] ([[User talk:M4j0r|talk]]) 19:40, 4 October 2022 (UTC) | [[User:M4j0r|M4j0r]] ([[User talk:M4j0r|talk]]) 19:40, 4 October 2022 (UTC) | ||
*Little bit disappointed that my theory was wrong but still, it's unique and interesting piece of hardware. I imagine this need to be at least as functional as early SPEED. Probably used for little bit more, like communication with CDVD, maybe with some Mechacon (at least cdvd part) replacement/emu, SIO2, and is general I/O bridge for emulated IOP to PS3 hardware. This make ps2_emu little bit more interesting than i though and explain few changes done between COK-001 and COK-002 ps2 emulators in terms of PS2 hardware devices handling. Thanks for your help. :) --[[User:Kozarovv|Kozarovv]] ([[User talk:Kozarovv|talk]]) 09:39, 5 | *Little bit disappointed that my theory was wrong but still, it's unique and interesting piece of hardware. I imagine this need to be at least as functional as early SPEED. Probably used for little bit more, like communication with CDVD, maybe with some Mechacon (at least cdvd part) replacement/emu, SIO2, and is general I/O bridge for emulated IOP to PS3 hardware. This make ps2_emu little bit more interesting than i though and explain few changes done between COK-001 and COK-002 ps2 emulators in terms of PS2 hardware devices handling. Thanks for your help. :) --[[User:Kozarovv|Kozarovv]] ([[User talk:Kozarovv|talk]]) 09:39, 5 October 2022 (UTC) | ||