Upgrades, Problems, Parts

It’s been an exciting few weeks. Archimedes The Archimedes continues to confound me. I finally got a replacement 1772, plugged it in and… No change! At this point I have swapped out all the chips that feed the floppy disk. If you look at the schematics, I have socketed and tested IC29, IC30, IC38, IC

While I wait for orders to arrive

I’ve got various bits’n’pieces on their way from China, so I haven’t been quite as busy as I could have been. Not a lot of upgrades / repairs are in the pipeline anyway so I haven’t needed to fix stuff. Having said that, my SE/30 needs to be broken down and the Digital board needs

The PET Lives!

Liiife! Give my creation…. LIIIIFE! So today my SRAM arrived, really well packaged and very promptly (So hats off to ScribblyGum Technology for that) and I thought, since I won’t be able to use my workbench for the next 3 days, I’d have a stab at replacing the SRAM tonight. It was a battle to

Of Bees and PETs

Another quickish update on two of my systems. Microbee The Microbee is happily working now. I swapped out an underpowered PSU for a more “meaty” one and now it’s booting reliably and is able to load games off my nearby Android phone. I just use the built in Android playback app to playback WAV recordings

We’re gonna need a bigger boat

So after the teaser last week, I was really happy when a donor who wishes to remain anonymous (Thank you! You know who you are.) sent me across another system for my collection. This one is a real doozy! This is a Commodore PET model 4032. The evolution of the very first “real” computer produced