18 bit CPU; was: Speed now & then
bill.gunshannon at hotmail.com
Sun Apr 15 09:44:48 CDT 2018
On 04/15/2018 02:28 AM, r.stricklin via cctalk wrote:
> 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.
Can't remember that. It's over 30 years since my 1100 days.
I do remember it wasn't an ASCII machine, however. good ole Fielddata.
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