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More CPS-1 WIP

 

More CPS-1 WIP

Posted by barry on 12 April 2012 at 20:09:00

Cadillacs and Dinosaurs (PIC bootlegs)

Following my work from 2008, where I identified the sprite RAM at 0x991000 in these sets, I hooked this sprite RAM up to the fcrash rendering and with some small amendments, the sprites now work correctly in these sets. The Turbo version works, as do the standard versions. The two standard versions (dinopic and dinopic2) have the same 68K program roms, but different PIC rom (both of which are likely bad?). dinopic2 has the same graphics roms, expect for 27c4000-m12481-3.bin which looks like a bad dump, and should use 8.bin from dinopic (all other graphics roms are identical). These sets now work fine, except for sound obviously.

Knights of the Round (bootleg sets)

I looked at the knightsb and knightsb4 sets which were are similar. They appear to be very similar to the daimakb set, in that they write the layer scroll values in the 0x980000 range. They also appear to use 0x98000c as a priority mode again as well. They also use the sprite RAM at 0x991000 as well with the fcrash sprite rendering. I haven't looked at sound yet, but otherwise they are working fine.

Carrier Air Wing (bootleg)

I've decoded the graphics roms for this set, and I had the inputs hooked up at 0x880000 a long time ago. The 68K just doesn't appear to write the layers scroll values anywhere. I'm beginning to wonder if the Z80 writes these? Guess I'll find out when I get around to looking at sound in these sets.

Final Crash

JacKc pointed out some sprite masking/priority issues in this bootleg which I have now resolved.

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