Commodore B128 with I/O issue

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Thu Sep 18 19:08:37 2003

> I have a Commodore 600 series B128 (low profile version similar to the
> European 610) and I have been trying to diagnose a problem and fix. I do
> not have diagnositcs for one of these guys to check the chips
> automatically. When I power on the machine, it reports to be READY with
> BASIC version 4. I can type one line of code (for example: 10
> PRINT"TEST"), but when I hit enter, the cursor disappears and no more
> screen IO can be generated. In other words, the cursor does not jump down

I had a C128 that behaved strangely -- generated random error mesasges,
moving the cursor around did very odd things,etc. It turned out to be a
bad DRAM chip in the first half of the memory map.

I know it's not exactly the same fault, but it could be related, and at
least the RAMs are easy to get...

-tony
Received on Thu Sep 18 2003 - 19:08:37 BST