We have some new PAL dumps.In the last days Porchy dumped PALs from an unemulated D.D. Crew bootleg board (it will be included in next MAME release), devices were two unsecured GAL16V8.Thanks to him.
Today I’ve dumped the PAL from an original Cabal (TAD Corporation) and successfully tested it on a GAL16V8 targeting device.
I recently received some faulty Capcom pre-CPS PCBs.As most of you know, these board are well known to commit suicide.As you can read from the Dead Battey Society site, “the way suicide work is that the batteries on board supply power to a bit of RAM that holds a decryption table. This table is the key to decrypting the encrypted program stored in the board’s ROMs. When the battery dies, this table goes away and the program code can no longer be decrypted. The CPU no longer has valid code to execute. The board stops working”.
In particular Capcom pre-CPS boards all use a single 3.6V battery and a custom Z80 marked “Kabuki”.The Kabuki has the RAM with the decryption table built right into it.
My Poker Ladies PCB committed suicided and all I got was a static blue screen:
After reviving it with the use of patched ROMs available from the Dead Battery Society site and doing some modification on PCB (thanks to Corrado for providing me info), the board successfully booted but showed sprites issue:
EPROMs containing this part of graphics were reafd fine so my first suspicions were on the custom sprites generator marked “86S105” (84 pin PLCC package) which addresses the devices :
I played the card of its replacement taking a spare from a shorted Block Block PCB:
and I won since sprites were fully restored:
I never had a Bubble Bobble PCB in my collection so recently I bought this bootleg board (original one is too expensive for my taste) called Super Bobble Bobble :
When I powered it up, at first glance it seemed to play fine except for the lack of sound which I promptly fixed reseating and cleaning the sound CPU ROM.But playing some games I noticed that screen was yellowish :
Shorting some data/address lines of various RAM I could identify the ones related to palette circuitry, two TMM2015 (6116 compatible)
ha
Probing the lower one with a logic analyzer revealed that some address lines were stuck low:
This lead me to remove and testing the chip out of circuit where it failed:
With a good RAM chip correct colors were restored:
End of job.
Today we have new PAL dumps.I reversed the PLDs from a non working Karate Blazers PCB, these will be marked as untested until someone can report feedback.Lastly I dumped and successfully tested the remaining PAL from a Poker Ladies PCB.Board has two PLDs but the one stamped “POKER” was already dumped since it’s shared with Pang, Super Pang and Block Block.
Today we have a big PAL dumps update.
Our contributor ‘cpsystem3’ posted on Dumping Union a dump from a Global Champion Taito F3 cart.Device was an unlocked PALCE16V8H, dump has been tested as working on same part.According to him, it allows for larger audio samples/ bank support.Thanks to ‘cpsystem3′ for this contribution.
As for me, I dumped PALs from these PCBs:
-Explosive Breaker, a vertical shoot’em up from Kaneko (dumped only the socketed chips)
-Bang!, a lightgun game from Gaelco
-City Connection (bootleg)
I also dumped a secured GAL16V8 present on hardware of my defective EETools ChipMax2 EPROM programmer.All dumps have been tested (except for the ChipMax2 one) and working in a GAL16V8 targeting device (except one dump from City Connection which requires a GAL22V10)