Login
Back to forumSee the full topicGo to last reply

Posted By

JamesC
on 2003-10-12
 Re: upgrading c16 using plus/4

ARRGH I had a nice reply to you and the Internet ate it.

Swap chips one by one, starting with TED and then the CPU. If you can't get one Plus/4 to work, then move on to another. You might use a dab of paint (such as to paint model cars or airplanes) to mark the chips that come out of the C16, in case you get confused as to which chip belonged where.

Not all problems are fixed by swapping chips. I have a Plus/4 (my most used one) that has 15 bad RAM locations, sequential, in upper memory. If I intend to use the machine for a BASIC program or a large ML program, I have to lower the top of memory to keep the Plus/4 from going haywire.

I also have a aunit that had a bad Kernal ROM (now fixed) and one that has a motherboard problem (it's not a swappable chip that's bad).



Back to top


Copyright © Plus/4 World Team, 2001-2024