Columbia

From: Eric Smith <eric_at_brouhaha.com>
Date: Tue Feb 4 02:02:00 2003

> 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/Appendix-II.html
Received on Tue Feb 04 2003 - 02:02:00 GMT

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