----- Original Message ----- From: "Philip Lord" <firstname.lastname@example.org> To: <email@example.com> Sent: Thursday, May 12, 2011 4:15 AM Subject: PET 2001 fix Part 3 - RAM/ROM board etc. >Hi all, >I'm trying to get my second 2001 motherboard working. >Ethan recently sent back my two boards, one fully fixed and working, and >one partial fix with lines running vertically down the screen, probably >caused by a stuck bit somewhere. ... >Now onto the non functional PET. As I mentioned, there is no RAM. The >screen appears as a bunch of random blocks (and they change position each >time on restart). with vertical lines through them (probably the lines >caused by the stuck bit that Ethan mentioned). Can someone tell me if these >blocks are what you would expect without any RAM installed? Again, I'm not >sure if I can make any progress until I get the RAM/ROM board up and >working first. ------- Have you tried replacing the video RAM? Message was sent through the cbm-hackers mailing listReceived on 2011-05-12 18:00:12
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