Recent content by wolfwood

Sorry, I don't think my original post was clear enough. I want to hook up the Pacman board to a Supergun type of enclosure. The enclosure will have an audio out port. When I said "stereo jack", I meant this type of connector: I already have an audio attention circuit, so the signal will be...

I'd like to wire the audio output from a Pacman board to a stereo jack. I do realize that the audio output should probably be attenuated if it is connected to an amplified speaker. Since Pacman is mono audio, is there any reason why I shouldn't connect SPEAKER+ through an audio attention...

Thanks for explaining that. It makes perfect sense, and I now see how to at least begin to tackle the problem. On a related note, I'm looking at the board schematic, and it appears as though the video sync line comes out of what I can only guess is some sort of a bus. How would I go about...

I'm not exactly sure what you mean by this. I can start a game, and I can hear Pac-man chomping pellets if I move the joystick. Is that what you're asking?

Thank you all for your suggestions. If 7F is good, should I expect these pins to be constantly toggling? I suppose I'm asking more of a logic probe usage question. For example, if I boot up the board and place the logic probe on pin 10 for some amount of time, should I see the pin go from low...

Yes, I am sure. I hooked up a different board to the same setup, and it worked fine.

Hi, I have a stock 1980 Midway Pac-man board, and it was working fine until I recently lost video output. The game still boots, as I can hear game sounds after I hit the start button and move the joystick. I tried reseating some of the socketed chips and adjusting the power supply voltages...