KoshiroKazuma
Student
I am converting CPS1 games recently and trying to make a 2 in 1 multi B-Board. I own several 91634B-2 and 91635B-2 boards.
From the silkscreen,it seems that:
The 91634B-2 accepts JEDEC EPROM for both GFX and PRG. But I cannot find any 8Mb(512K X16) JEDEC EPROM for it. Because I merged 2 game roms together...
The 91635B-2 Mask ROM type B-board can accept NON-JEDEC EPROM for GFX. I can use M27C800. But the PRG part only accepts JEDEC ones. So, as above, the same question...
From this article :https://wiki.arcadeotaku.com/w/CPS1_Repair_Logs
It seems that the jumpers can control EPROM types (JEDEC or Non-JEDEC) But it's all about 89624B board. No more infomation about later board versions.
Do you guys have any info about the jumpers?
From the silkscreen,it seems that:
The 91634B-2 accepts JEDEC EPROM for both GFX and PRG. But I cannot find any 8Mb(512K X16) JEDEC EPROM for it. Because I merged 2 game roms together...
The 91635B-2 Mask ROM type B-board can accept NON-JEDEC EPROM for GFX. I can use M27C800. But the PRG part only accepts JEDEC ones. So, as above, the same question...
From this article :https://wiki.arcadeotaku.com/w/CPS1_Repair_Logs
It seems that the jumpers can control EPROM types (JEDEC or Non-JEDEC) But it's all about 89624B board. No more infomation about later board versions.
Do you guys have any info about the jumpers?