Zork2
New member
I have a sickly Pacman PCB that has a multitude of problems.....
First, the "character" and nicknames come up as all letters.
Second if you notice, there are two "dots" right below the "00" score. Also a dot below the power up pellet.
Third, at random times, there will be a red, sometimes red and green line through the "1up High score 2up" This usually goes away when Pacman eats the first power pellet on the demo mode.
Also at random times during demo mode, the screen flashes as if level was completed, and it starts the pacman being chased scene with full sound........
I have swapped the VRAM addresser board, and the Z-80 sync board with known good ones..... no change.
Also has new Z-80....no change....
Has anyone seen these issues before? Any places to start would be greatly appreciated!
Here are some pics
First, the "character" and nicknames come up as all letters.
Second if you notice, there are two "dots" right below the "00" score. Also a dot below the power up pellet.
Third, at random times, there will be a red, sometimes red and green line through the "1up High score 2up" This usually goes away when Pacman eats the first power pellet on the demo mode.
Also at random times during demo mode, the screen flashes as if level was completed, and it starts the pacman being chased scene with full sound........
I have swapped the VRAM addresser board, and the Z-80 sync board with known good ones..... no change.
Also has new Z-80....no change....
Has anyone seen these issues before? Any places to start would be greatly appreciated!
Here are some pics
