CPS2 PAL3
PAL/GAL images
http://www.jammarcade.net/pal-dumps/
As of 21 Sept 2012 - the G Pal from jamma arcade is not confirmed working, F version works great
PAL3
Deals with addressing the ROMS, 4(5) different versions. Original part is PALCE16V8H-15, 15 is the speed rating, 15ns. Pin compatible GAL is GAL16V8B-15, GAL16V8B-10 is also confirmed working.
On rom board 93646B-4
- Pin 2 via jumpers go to A20 on eprom 13,14,15,16 (GFX low chunk)
- pin 3 go to A19 on eprom 13,14,15,16
- pin 5 via jumpers go to A20 on eprom 17,18,19,20 (GFX high chunk)
- pin 6 go to A19 on eproms 17,18,19,20
- pin 7 via jumpers go to A20 on eprom 11,12 (Qsound samples)
- pin 8 go to A19 on eprom 11,12
Version B
Up to 16mb GFX, 2x2mb qsound sample eproms.
Version D
Unknown
Version E
Existence to be confirmed
Version F
Up to 32mbit GFX, 2x2mb qsound sample eproms
Version G
Up to 32mbit GFX, 2x4mb Qsound sample eproms.
PAL F->G hack
It is possible to trick an F into behaving like a G with a jumper wire. You need to lift pin 7 of PAL3 so it doesn't go into the socket and solder a jumper wire from pin 7 to pin C13 of connector CN3. This works on all revisions.
PAL F->G hack, later model B boards
With 93646B-6 and 93646B-7, you can simply lift pin 7 and solder a jumperwire to pin 9.
PAL version cheat-sheet
- If qsound samples (11&12) is 4mb each, it's a G
