I pulled out my logic probe and tested D0...it seems to be pulsing. On May 12, 2011, at 10:55 PM, Philip Lord wrote: > >> If the character generator ROM is OK (can you test it on the working PET?) > > Thanks for your insight. Unfortunately the non working board uses the 2316 masked ROM's and the other one uses the 6540's, so I can't swap them. Fortunately I was able to burn a 2716 and confirm that the original 2316 is dead (FF FF FF...). > > So now I have a screen of random and slightly deformed characters (seems like the same or similar character layout on each start up though), with a pixel flicker through them. I've put pics and a short video up on the same page here: > > http://web.me.com/lord_philip/other_computers/20012.html > > Strangely enough, just as I pull the power I can see all the characters perfectly for a faction of a second. I've tried to show that in the video. > > I still haven't tested D0 on the character ROM to see if it's stuck high. Should I still do this, or does it look like that particular issue has gone now? > > Thanks again > > Phil > > > > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2011-05-12 15:00:04
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