Tron Schematic

mcandrewsoun

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Anybody know where I can get a better schematic for the mcr boards? The one I got was marinally readable. Ive got a board thats appears to have trouble booting.. I think my power supply is ok, Ive got a decent 5.1 or so volts and it looks pretty clean on the scope.
The purple wire has been cut..

Thanks!

Andrew
 
Update

Im able to get the board to boot when I pull the cables to the Sound/IO board..so the problem is there. Im not getting clock on the z80, so I'll check that next...

Andrew
 
Another update..

Found a dead flip flop in the clock circuit (74ls74).. Replaced that, and fixed a bad connector between sound and cpu board, and now it boots, and will coin up. Now on to the video board.. No foreground objects, so Im going to look into the foreground memory addressing and buffering..

Andrew
 
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