(attention: newbie post)
I decided to get the Pac-man PLUS that I purchased 10 years ago, BACK to the Original Pac-man (original Pac-man cocktail cabinet).
I found several chips laying in the bottom of the cocktail table. They're labeled (see pic): PM A, PM B, PM C, PM D and they're MCM2532L chips. I was (am?) hopeful that these are the original chips necessary to convert the system back.
I was able to pull the ribbon cable, and re-seat the original Z80 chip (also found in cabinet). I replaced the Pac-Man PLUS chips from sockets 6E, 6F, 6H and 6J with the "found" chips, placing PM A --> 6E, PM B -- 6F (and so on..) and got a very garbled display upon boot up.
I didn't pull the chips on the board in 5E & 5F, as a hand-written label says: PMan 5E on one and PMan 5F on the other. From what I gather those also should be replaced to get back to the original Pac-man too, but at this point I'm at a lose...
Based on the chips I've found (again, see pic), and the actual GOAL of getting back to the original Pac-man, can someone tell me what I am doing wrong? or need to buy? or burn?
TIA - Tim
I decided to get the Pac-man PLUS that I purchased 10 years ago, BACK to the Original Pac-man (original Pac-man cocktail cabinet).
I found several chips laying in the bottom of the cocktail table. They're labeled (see pic): PM A, PM B, PM C, PM D and they're MCM2532L chips. I was (am?) hopeful that these are the original chips necessary to convert the system back.
I was able to pull the ribbon cable, and re-seat the original Z80 chip (also found in cabinet). I replaced the Pac-Man PLUS chips from sockets 6E, 6F, 6H and 6J with the "found" chips, placing PM A --> 6E, PM B -- 6F (and so on..) and got a very garbled display upon boot up.
I didn't pull the chips on the board in 5E & 5F, as a hand-written label says: PMan 5E on one and PMan 5F on the other. From what I gather those also should be replaced to get back to the original Pac-man too, but at this point I'm at a lose...
Based on the chips I've found (again, see pic), and the actual GOAL of getting back to the original Pac-man, can someone tell me what I am doing wrong? or need to buy? or burn?
TIA - Tim

