Columbia -- Computers

From: Lawrence Walker <lgwalker_at_mts.net>
Date: Thu Feb 6 17:10:01 2003

 Avoided the OT but the shuttle (earlier one?) also used a
modified Grid laptop.

http://www.nasm.si.edu/nasm/dsh/artifacts/GC-
PayloadComputer.htm

Lawrence

On 3 Feb 2003, , Eric Smith wrote:

> > I think they are on-topic. We've got four Ibm 360's
> > onboard.
>
> No, they have five AP-101S General Purpose Computers on
> board. The AP-101S and the earlier AP-101B are derived from
> the computer used in the F-15 fighter. The architecture
> actually quite a bit different from that of the System/360,
> though there are similarities. The System/360 had sixteen
> 32-bit general registers, while the AP-101 has two separate
> sets of eight registers. The System/360 could address
> sixteen megabytes, but the AP-101 can only address one
> megabyte, and it is awkward to address more than 256 Kbytes.
>
> But the AP-101B is over ten years old, and I think *some* of
> the AP-101S computers are, so they're on-topic.
>
> Space Shuttle issues other than the computers are off-topic.
>
> Does anyone have the manuals for HAL/S, the language used
> for the AP-101 software? There's some info on it at:
> http://www.hq.nasa.gov/office/pao/History/computers/Appe
> ndix-II.html


lgwalker_at_ mts.net
Received on Thu Feb 06 2003 - 17:10:01 GMT

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