On Tue, 17 Jan 2017, Jon Elson wrote:
On 01/17/2017 11:09 AM, Chuck Guzis wrote:
I find it curious that what seems to be collected
in the minicomputer
area seems to be gear of major brands.
Does anyone collect Varian minis?
I had a Varian 620F a long time ago. It was a
whole bunch of wire-wrap
boards. It sort of tried to work, but was very flaky. I was able to store
some words into the core memory, but it seemed like every couple minutes it
would zero out a word or two (I guess it was failing to write back the
contents after the destructive readout.) Without schematics, it was
impossible to do much about it.
I used to work on a 727 flight simulator that used a Varian 620 to
generate the visuals. The display was capable of addressing 1024 points
of light and that's how the runways and airport outline were drawn.
Pretty neat stuff. Here's some pics of the system that ran the sim:
http://flightweb.simpits.org/BehindTheScenes/727sim_page1.html
g.
--
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