CrazyKongFan
Well-known member
Calling all Pac-Man experts
I recently picked up a bunch of bootleg Pac-Man boards. A couple of them have issues (I'll make separate posts) Two of them were PAC-1/PAC-2 boardsets with Pop Man ROM's (Pac-Man with Popeye's head and a different maze) in them. One works 100%, but the other one just comes up with garbage. A few things I've done so far with little/no change (the working board still works 100% after doing these):
Swapped Z80's on both boards.
Swapped the 1 socketed PROM (on the PAC-1 board, the one with the edge connectors)
Swapped the PAC-2 board (the one with 4 EPROMs and without the edge connectors)
Swapped the interconnect cable
Also, since I have JAMMA adapters for both Pac-Man (22/44) and Falcon (18/36), and these boards have both of those, I tried both:
With the Pac-Man JAMMA adapter, it shows the 2nd pic in normal mode, and garbage in test mode.
With the Falcon adapter, it shows the 3rd pic (which is similar to when it's in test mode on the 22/44 edge connector. The Falcon one doesn't support the test mode switch)
There's nothing else socketed for me to swap out. The EPROM's are good, as I put all of them in the working board and it worked 100%. 4th pic is how it should look (from the 100% working board)
Any ideas what might be wrong, or what else to check? Thanks!
The non-working PAC-1/PAC-2 boardset
Powered up with Pac-Man JAMMA adapter
Powered up with Falcon JAMMA adapter
How it should look, other board working 100% (with the ROM's from the non-working board)
Swapped Z80's on both boards.
Swapped the 1 socketed PROM (on the PAC-1 board, the one with the edge connectors)
Swapped the PAC-2 board (the one with 4 EPROMs and without the edge connectors)
Swapped the interconnect cable
Also, since I have JAMMA adapters for both Pac-Man (22/44) and Falcon (18/36), and these boards have both of those, I tried both:
With the Pac-Man JAMMA adapter, it shows the 2nd pic in normal mode, and garbage in test mode.
With the Falcon adapter, it shows the 3rd pic (which is similar to when it's in test mode on the 22/44 edge connector. The Falcon one doesn't support the test mode switch)
There's nothing else socketed for me to swap out. The EPROM's are good, as I put all of them in the working board and it worked 100%. 4th pic is how it should look (from the 100% working board)
Any ideas what might be wrong, or what else to check? Thanks!
The non-working PAC-1/PAC-2 boardset
Powered up with Pac-Man JAMMA adapter
Powered up with Falcon JAMMA adapter
How it should look, other board working 100% (with the ROM's from the non-working board)
