Let me preface.....I suck at vector motherboard repair. The vector generator section kicks my ass. Anybody have any debugging tips they want to share. I've got an Asteroids I've been putting off....it's watchdogging. I pulled the DAMGO signal at L6.....resetting stopped, game played blind. So, my problem lies within the vector generator. I have diagonal lines running across the screen. In trest mode, I get repeating beeps...that never stop. Grounding the watchdog disable causes a constant tone (same in test mode or not). The vector ROM is good. What next?...vector RAM? Thanks!
Edward
Edward



