Re: PDP 11/40 system manual

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From: Bob Eager
Date: Fri, 10 Aug 2018 22:05

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On Fri, 10 Aug 2018 15:01:06 -0400, Rich Alderson wrote:

> I still think in EBCDIC, nearly 50 years later, rather than ASCII, which
> I sort of learned less than 40 years ago, and I still have a fondness
> for the 360 instruction architecture, but the orthogonality of the
> PDP-10 instruction set, the uniform use of bits 7-8 to indicate
> no-modification/immediate/memory/self on all the data movement
> instructions, the elegance of single instructions to conditionalize the
> execution path rather than a sequence in which you have to be careful of
> changes to the condition codes you're checking, even the word addressing
> rather than byte addressing, have forever spoiled me for lesser systems.

I was going to mention the PDP-10, but forgot. I did quite a lot of 
assembly language programming on one.

-- 
Using UNIX since v6 (1975)...

Use the BIG mirror service in the UK:
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From: Bob Eager <news...@eager.cx>
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Subject: Re: PDP 11/40 system manual
Date: 10 Aug 2018 22:05:55 GMT
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