Captain Cozmos Posted February 4 Share Posted February 4 (edited) Before I break out the logic probe, soldering iron and oscilloscope I wanted to describe the issue and get your feed back.. I was testing three Colecovisions that I bought for parts. One works, just dirty connectors, the second is clearly some dead vram but the third I have never encountered before. It works until I get to the middle of the screen and then it wraps around to the left side So I was testing mouse trap...middle wraps to the left. I tried Centipede, the middle and wraps to the left. Same with all the games. First I was thinking last VRAM chip where the sprites usually sit but the patterns are fine. So before I start screwing with the VDP and ram is it possible the controller ports or the 1K scratch Ram. I also found a Gorf cart that are two EPROMS but so what, I can use them in another project as well as the PCB and shell. They don't look like prototypes, just regular Gorf #1 and #2 1983 Coleco Your thoughts.... CC Edited February 4 by Captain Cozmos Quote Link to comment Share on other sites More sharing options...
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