First post, by ElBrunzy
- Rank
- Oldbie
I got a vic20 a friend found on a trashcan and pick it up for me. It was modified so the previous owner added switch that seem to cut or enable lines to the RAM from the cartridge port, I assume it allow him to cheat on some video games by disabling acces to the RAM at given time.
I want to see if the thing still work. So I have a power supply that would ouput 4.5v DC (or 6v DC) so I could power that part of the line, but I wonder what is the 9v AC for, is it really needed ? Maybe the vic20 could power some motor with the 9v AC ? I dont know. I could have the small red "power led" to light up, but I dont expect this to mean much. I did try to plug the AV out port with some stiff wires but could not bring any images to an composite video in source. Do I need to hook a scandoubler ? When I put an CRT TV composite on the vic20 I can see white screen appear and disappear and gradients lines appear and quickly disappear. But I think they maybe are from the tv getting messed up with noise signal the vic20 send as I randomly plug wires in the connector.
My question is about what is the minimal power you need to provide to the vic20 and the simplest video signal you can have out of it. I want to figure out if this vic20 is in working order.