I've been playing around with the GTIClub driver and while it's almost there (before I looked at it), there are some problems.
I'm not going to pretend I have a clue what I'm doing with the graphics but I have stuck a hack in there to remove the floating FBI warning in the sky. Just reduced the view port of the roz layer 1 to 32px and started the tile mapper for roz 1 looking over an extra 32px. This probably breaks other games however.
The sound is where I think I can actually do something submittable.
First of all the crystal value of the PCM chip was wrong. It should be 16.9mhz, not 16. This fixes the pitch (for all GTIClub based games it seems) but the 056800 was sequencing the music too slowly. It sounded wrong compared to the PCB anyway but you can tell as the announcer's "GTI CLUB!" exclamation was arriving too early. I changed the sound rate in the 056800's driver which works great for GTI Club but this made Thrill Drive's music too fast. Can't be sure about other games as I have no reference.
So any ideas from here?
http://www.youtube.com/retrorepair
Edited by RetroRepair (01/27/13 03:34 PM)
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