REPLACED MULTIPLE BAD ROMS
REPLACED ROM BOARD WITH LOGIC:
2 x Logic chips required: LS 32 and LS 04
CUT PINS 4 , 6 , 8 , 10 , 12 OFF THE LS 04
CUT PINS 8 , 11 OFF THE LS32
PINS
3 , 5 , 7 , 9 , 11 , 13 LS04 = GND
7, 9, 10 , 12 , 13 LS 32 = GND
PIN 9 OF PAL U29 TO PIN 1 LS 04 AND TO PIN 5 LS 32
PIN 18 OF PAL U26 TO PIN 1 AND 4 OF LS32
PIN 2 OF LS 04 TO PIN 2 LS 32
PIN 3 = ROM U1 CHIP ENABLE
PIN 6 = ROM U2 CHIP ENABLE
Chip enable is only pin on the roms, you can double stack them in the socket!!
Any error let me know
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