Rescuing a stray from eBay this weekend. #tandy #trs80 #retrocomputing
Unsure what was going on here, but the whole main board appears to be wrapped in foil. The interface connector on the rear seems to have a soldered on L-connector with a button to do "things". This poor thing is going to get a full tear down before I even CONSIDER turning it on. #tandy #trs80 #retrocomputing
The foil layers are definitely intentional. Someone really didn't want EMI. They also didn't want a numpad? #trs80 #tandy #retrocomputing #radioshack
I believe this is a lower case mod. Very cool. Paper label came detached from the EEPROM but is definitely legible. #retrocomputing #tandy #radioshack #trs80
Oh boy ... um ... this mod is surprising to find. An Exatron MM800 in situ. There's a non-zero chance that this this will "just work". #retrocomputing #trs80 #tandy #radioshack
I just did some cursory eyeballs across the Interwebs and it would appear that the MM-800 isn't documented and I'm having trouble finding any information on the expansion card. It looks like it still has a string-floppy interface, so that's wild. #radioshack
The Exatron MM+

The Exatron MM+, also known as the Exatron Memory Plus Expansion, was an alternative to the Radio Shack Expansion Interface for the TRS-80 Model I. It was designed …