Thalia Archibald

@[email protected]
205 Followers
81 Following
299 Posts
Computer science PhD student at the University of Utah, researching compiler verification with @regehr.
UNIX historian and archivist.
Rust standard library contributor.
Sitehttps://thalia.dev
GitHubhttps://github.com/thaliaarchi
Show threadThalia Archibald8m ago
@elb This is what happens when there's teletypes going cheaply in estate sales 😅. I also recently snagged a cheap barn find Silent 700 707, but I've got no cables for it nor a modem. That's a later project.
Thalia Archibald11m ago

It's serial debugging day!

I need to get at least one of these teletypes working over RS-232 with UNIX V4 and V7 in SIMH. The SIMH docs are notoriously bad. Help would be appreciated.

#retrocomputing #vintagecomputing

Show threadThalia Archibald13h ago
@gloriouscow I've also seen isopropyl alcohol mentioned too. I tried it for a small section, but it didn't work so well.
Show threadThalia Archibald13h ago
@gloriouscow and a surprisingly annoying one. I'm not wanting to repeat this for a while, but I might need to for my Teletype Model 43s.
Thalia Archibald13h ago

I visited JJ's shop (https://obsoletetech.us) yesterday to fill some gaps before my demo this week.

He graciously let me borrow his Magnavox CM8562 monitor from his personal collection, so I can still demo my CoCo3, as my new Tandy CM-8 is having signal issues I haven't fully diagnosed. I also got a working Commodore 1541-II floppy drive to replace my broken 1541 and a cassette recorder to use instead of my CCR-82.

I intended to just get some floppy disk holders for my floppies, but walked out with a lot of floppies too! Lots of colorful ones, some with dinosaurs, 10x of LDS Personal Ancestry File 2.3 for MS-DOS, two Commodore diagnostics disks, and several with interesting-sounding software. I also got two magneto-optical discs with data, which will be nice tests for my recovery setup, and four Zip disks.

The mouse will be a nice fit with my Macintosh SE. I don't know what games use the Commodore paddles, but now I have them.

#retrocomputing #vintagecomputing

Thalia Archibald14h ago

I just re-inked a ribbon for my Marxwriter, but it doesn't print evenly 😭.

I repurposed a miscellaneous ribbon, removed it from the original spools, and re-inked it with a sponge soaked in stamp ink, while re-winding it in the Marxwriter's spools. Perhaps I'll try again later, but for now this is good enough.

#typewriter

Show threadThalia Archibald2d ago
@HopelessDemigod I'm afraid I'm not a radio ham, so I'm not sure what you mean, but it looks like that's used for RS-232 over radio, so this would become a dumb terminal? I've got several teleprinters and a VT220, so I've got that covered :).
Show threadThalia Archibald2d ago
It was shipped with the most inventive packaging I've seen, wrapped in brand new, sliced pool noodles:
Thalia Archibald2d ago

My period-accurate Tandy Color Computer 3 setup now has a Tandy CM-8 RGB Color Monitor!

This model was designed specifically for the CoCo3, utilizing its higher quality RGB signal and is the perfect pair for a complete Tandy setup. However, even back in the day, other monitors were preferred over it, such as the Magnavox 8CM515 and Commodore 1084, for their sharper picture and additional input signals. But, what's a retro setup without the quirks of the day?

#retrocomputing #vintagecomputing

Thalia Archibald2d ago

I'm ready to recover magneto-optical discs! These were kindly donated, to enable us to recover some UNIX-related MO media at the University of Utah.

#retrocomputing #vintagecomputing