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Tube❄️Time

what did i buy? well, i bought this Micro Switch keyboard. 53SW1-8. i'll have to find keycaps. apparently it uses 2SW keycaps.

14 comments
Tube❄️Time replied to Tube❄️Time

i picked up this Seagate ST-251N which is the SCSI version of the 251 drive I've reverse engineered. I haven't documented the control board in this one yet.

Tube❄️Time replied to Tube❄️Time

and i got a type 2 planar for an IBM PS/2 Model 80. this one is meant to run a 386 at 20MHz. i could use it to upgrade my model 80 which has the slower type 1, 16MHz planar.

(there's a whole story about the type 1 needing matched memory cycles and the type 2 not needing that)

Tube❄️Time replied to Tube❄️Time

it's missing a few chips and has some damage.

Calyo Delphi replied to Tube❄️Time

@tubetime Oh.

That's uh...

That's a crack. 😬

Tube❄️Time replied to Tube❄️Time

digging in my stuff I found a loose keycap. I wonder...

root42 replied to Tube❄️Time

@tubetime Weird place for the 7. Does it come from a keyboard with the numpad on the alphabetical keys?

Richardus replied to Tube❄️Time

@tubetime oww. Never seen a crack in a chip like this.

Abe the Honest replied to Tube❄️Time

@tubetime so that's what it is! A friend of mine gave me a motherboard very similar, noting that there was almost no estàndard conector. I knew it was an IBM but never looked into it further than that.

John Wilson replied to Tube❄️Time

@tubetime I think I had one of those, I wish I had the audio recording of that thing booting into DOS 6.22

Michael Katzmann🐈 replied to Tube❄️Time

@tubetime Hall effect? Honeywell had some nice kryboards in the 80s.

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