CraZy Muffin
Active member
FIXED: Playchoice 10 graphics issue
So I finally decided to pull out my old Playchoice 10 project.
I was in the middle of putting together a PC10 (single monitor board) to JAMMA connector, but I couldn't get it working properly with my converter.
When I had someone test the board in a working cab, they said the CPU chip was bad.
I ordered 2 replacement chips, but while waiting for them to arrive, I put the project aside and forgot about it for a couple years.
I pulled it out yesterday, and I took a good look at it. I also found a proper manual for the thing, which had the edge-connector pinout. I look back at my old pinouts (which were all slightly different), and well... besides showing -5V where there should be 12V, they were all backwards, parts side vs. solder side.
So my converter was backwards (looking at the board now, it should have been obvious that it was wrong), so I ended up putting 5V into some of the button locations, ooops.
Anyway, I took last night to flip around the connectors, added on all of the button wires, replaced the CPU, and plugged it in.
And it boots up fine!
However, there is a slight issue with it. So far I have tested Elevator Action (in a Tennis cart) and Zelda (in a Rad Racer) and both exhibit a similar problem, only Zelda is worse.
When starting the game, everything seems normal. But a few seconds after starting the game, the screen starts jumping a little bit, some garbage graphics blink on the screen. With elevator action, it seems like whenever an elevator is moving on screen, it blinks constantly. And with Zelda, well... it has some blinking garbage, and when trying to move to a new screen, it usually crashes/freezes and resets the main board, going back to the main menu.
Does the 5V line need to be adjusted? or is there is bigger problem going on with the board.
I have a couple more carts I can test, but I would rather not risk them if I dont have to.
Thanks...
EDIT: also, the service menu tests all say OK. and I tested all buttons and they work great. so I am just having this graphical issue.
So I finally decided to pull out my old Playchoice 10 project.
I was in the middle of putting together a PC10 (single monitor board) to JAMMA connector, but I couldn't get it working properly with my converter.
When I had someone test the board in a working cab, they said the CPU chip was bad.
I ordered 2 replacement chips, but while waiting for them to arrive, I put the project aside and forgot about it for a couple years.
I pulled it out yesterday, and I took a good look at it. I also found a proper manual for the thing, which had the edge-connector pinout. I look back at my old pinouts (which were all slightly different), and well... besides showing -5V where there should be 12V, they were all backwards, parts side vs. solder side.
So my converter was backwards (looking at the board now, it should have been obvious that it was wrong), so I ended up putting 5V into some of the button locations, ooops.
Anyway, I took last night to flip around the connectors, added on all of the button wires, replaced the CPU, and plugged it in.
And it boots up fine!
However, there is a slight issue with it. So far I have tested Elevator Action (in a Tennis cart) and Zelda (in a Rad Racer) and both exhibit a similar problem, only Zelda is worse.
When starting the game, everything seems normal. But a few seconds after starting the game, the screen starts jumping a little bit, some garbage graphics blink on the screen. With elevator action, it seems like whenever an elevator is moving on screen, it blinks constantly. And with Zelda, well... it has some blinking garbage, and when trying to move to a new screen, it usually crashes/freezes and resets the main board, going back to the main menu.
Does the 5V line need to be adjusted? or is there is bigger problem going on with the board.
I have a couple more carts I can test, but I would rather not risk them if I dont have to.
Thanks...
EDIT: also, the service menu tests all say OK. and I tested all buttons and they work great. so I am just having this graphical issue.
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