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Old 8th Apr 2021, 9:19 am   #10
John Earland
Hexode
 
Join Date: May 2013
Location: Middlesbrough, North Yorkshire, UK.
Posts: 442
Default Re: Commodore PET working intermittently

Quote:
Originally Posted by SiriusHardware View Post
To get back to this specific machine: John, which IC socket was it that you replaced? (Which IC position / circuit number).
UF10 was the socket I replaced. You're quite right about the 'test' facility on the ROM/RAM Board. After a few on and off switching I eventually was able to access the tester. It showed that the RAM at least is fine. Here's the thing though, I've just put the ROM/RAM board setting to Basic 4 32k. Upon booting the machine it should all be uppercase but it isn't and it's only showing 16k which also happens to be what my machine has as it's own RAM without the board. Could there be something wrong with the board?

**Just realised that it is showing on board 16k because that's what I had set the ROM/RAM board to! However, this doesn't explain the lowercase that I'm seeing.

Last edited by John Earland; 8th Apr 2021 at 9:37 am.
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