18 bit CPU; was: Speed now & then

Chuck Guzis cclist at sydex.com
Sun Apr 15 19:07:32 CDT 2018

On 04/15/2018 04:47 PM, Jay Jaeger via cctalk wrote:

> Yes, the Univac 1100 series were one’s complement (had brief experience as a student with 1108 and 1110 from 1969 to 1975)

I thought I'd originally said as much.  9 bit characters with a range of
+/-255 as well as +/- zero.

Here are some cool coding tricks for the 1100 series:


Similar tricks exist for the ones' complement CDC 6000 series.


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