Desperado's latest activity

It replaces the EDIT ROM (base address $E000). The reason for this is that this device is generally in a socket - whereas the others...

The first thing is the white IC sockets. They are notoriously bad for making poor contact with the IC pins. Dave

Hello and welcome, here you will surely find very experienced people who will help you solve the problem. They've helped me many, many...

Guess I won't bother trying to make the CBM2 emulator scream, then. It's probably just as well. Even if we proved that the CPU hadn't...

I'm officially closing this thread, I've listed the Pet for sale on Ebay... there will definitely be someone able to repair it. I thank...

Because MAYBE we have a bad 138 or 139 ic?? :(

I thought I would find a new 6509 cpu in my Easter egg but unfortunately it wasn't there....maybe can I try with a 138 ic piggyback ?

Forget it. I don't think it is. The only way you could do this is to remove the CPU, plug it into a breadboard and write a simple...

Please Dave help me to repair this bad 710! I need to know if this cpu is good or die :/

>>> there will be other opportunities to learn how to use the oscilloscope. Just to be clear, you need to learn how to use your...

Thank you all for the help and teachings you have given me... there will be other opportunities to learn how to use the oscilloscope...

Are you now going to invest some of your time in learning how to use your oscilloscope correctly? If so, create a new thread and we can...

sorry, is solded!

Hi, not again...Sid i solded on board...

Not necessarily. Sometimes it can cause black screen, other times it will just sound terrible if it's bad. Curious though, has...