18 bit CPU; was: Speed now & then

r.stricklin bear at typewritten.org
Sun Apr 15 01:28:02 CDT 2018


On Apr 14, 2018, at 4:00 PM, Bill Gunshannon via cctech wrote:

> I'm familiar with Univac's having worked on the 1100 many moons ago,
> But look at the line above my comment:
>  "you assume that a char is 8 bits, with a signed char having a range 
> of +/-255".
> 
> An 8 bit signed char has the values -128 to +127, as I stated.  even a 9 bit
> signed char would not be +/-255 but -256 to +255.

Doesn't the 1100 use one's complement? -0 != 0, so AFAICT it's still +/-255.

ok
bear.

-- 
until further notice



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