#data general

[stone-cold-groove]

Do you have the courage to save 50% on your next computer? Ad for the Data General Eclipse minicomputer system - 1974.

[commodorez]

Closeups of IC's being tested and replaced on the Nova 1200

[dinosaurspen]

Data General Eclipse and terminals.

[techav]

Usagi Electric, Forgotten Machines, & Nevets at VCF Southwest 2025

[Usagi Electric], [Forgotten Machines], and [Nevets01] collaborated on a massive exhibit of unique old hardware.

[Usagi Electric] had an interactive exhibit with his recently rebuilt PDP 11/73 running examples of spectroscopy analysis using a Bomem vector processor. [Usagi] also demonstrated a Data General Nova 1210 running BASIC.

[Forgotten Machines] had a variety of old terminals, computers, and peripherals on display. He was on-hand throughout the show to help anyone image and preserve their old magnetic media.

[Nevets] had an interactive exhibit with a Data General Nova 1200 running BASIC alongside a (sadly non-functional) Digital Computer Controls D-116, a clone of the Nova 1200.

[fuzzyghost]

[pixelfireplace]

Data General Dasher 450 Display Terminal

Source: computerhistory.org | Photo credit: Gwen Bell

[insiderzx]

1970's computers - Data General with Dash terminals

[victusinveritas]

[hollis-art]

every garfield lover needs their snoopy best friend. it's just the rules, what can i say

[out-of-context-tng]

[vitamin-k-tablets]

talking to cats :)

[stone-cold-groove]

The best way to keep ahead of the times. Eclipse S/250 computer. Ad for the Data General Eclipse S/250 computer system - 1979.

[commodorez]

I found the culprit behind the spurious /INTR signal from the Cassette I/O board that's been holding up the Nova 1200 Logic Test from completing successfully.

This 7474 is ancient, and has no pull-up resistor on the /PRESET input (which is fine for the original variants, though not recommended). The Q and /Q outputs (cyan and magenta) should be mirror images of one another, and they are not.

So I replaced it with a new 74LS74 part, which meant I had to add in that /PRESET pull-up resistor:

Testing the old 7474 confirms it's a piece of shit:

I ran the Nova 1200 Logic Test and... it passes. Repeatedly! Address 00121 contains the number of successful passes, which is over 8000!

Okay, let's go for broke: loading up Data General Single User BASIC...

HOLY SHIT IT WORKS!

Only took like 3 years to get it back to an operational state, but there it is, running BASIC again.

[dinosaurspen]

An office worker logs addresses into a Data General computer at a direct-mail company in Boston, Massachusetts - via Mashable

[freakdroids]

lets act normal with Data

[fuzzyghost]