On Sep 22, 2012, at 7:06 PM, Dave Angel <d...@davea.name> wrote:
> On 09/22/2012 05:05 PM, Tim Roberts wrote:Well, for what it is worth… the DEC Laboratory INstrument Computer (LINC-8, sort of a forced acronym because I believe they were built to specs issued by Lincoln Labs.) and the later DEC PDP-12 (which incorporated the LINC-8 instruction set, along with the PDP-8 basic set) also did ones-complement integer arithmetic. I never used a LINC-8, but I worked for several years around PDP-12s. (They also had a build-in CRT and a MUX'd analog-to-digital converter with CPU instructions for driving both directly.) As I remember, they maxed out at 32k (12-bit) words of RAM. I don't know when they were discontinued, but there were still some PDP-12s in use as late as 1988 when I lost track.
>> Dennis Lee Bieber <wlfr...@ix.netcom.com> wrote:
>>> On 22 Sep 2012 01:36:59 GMT, Steven D'Aprano wrote:
>>>> For non IEEE 754 floating point systems, there is no telling how bad the
>>>> implementation could be :(
>>> Let's see what can be found...
>>> IBM 360: Same as Sigma-6 (no surprise; hearsay is the Sigma was
> And it's been a long time (about 39 years), but as I recall the CDC 6400
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