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Article #625528

Re: PDP 11/40 system manual

#625528
From: Peter Flass
Date: Mon, 13 Aug 2018 11:33
40 lines
3114 bytes
Questor <usenet@only.tnx> wrote:
> On Thu, 09 Aug 2018 22:16:29 GMT, scott@slp53.sl.home (Scott Lurndal) wrote:
>> Charles Richmond <nume...@aquaporin4.com> writes:
>>> On 8/9/2018 1:45 PM, Rich Alderson wrote:
>>>> Elliott Roper <nos...@yrl.co.uk> writes:
>>>> 
>>>>> On 8 Aug 2018, hanc...@bbs.cpcn.com wrote
>>>>> (in article<21aaeee8-c41a-4442...@googlegroups.com>):
>>>> 
>>>>>> Bitsavers uploaded the system manual for the PDP 11/40.
>>>> 
>>>>>> http://www.bitsavers.org/pdf/dec/pdp11/1140/DEC-11-H40SA-A-D_PDP-11_40_System_
>>>>>> manual.pdf
>>>> 
>>>>>> 358 pages, undated.
>>>> 
>>>>> Thanks. Unbounded nostalgia. Was there ever a more elegant computer than a
>>>>> PDP-11?
>>>> 
>>>> Yes, many.
>>> 
>>> *Not* that I disagree...  but which other computers do you find elegant???
>> 
>> B6700.  B3500.  HP-3000.
>> 
>> And the epitome of the CISC processor, the VAX-11.
> 
> Sixteen addressing modes, single instructions to calculate CRCs and polynomials,
> string translation instructions... the VAX had just about everything except an
> opcode for "phase of the moon."  Too many bells and whistles to be considered
> elegant, IMO.
> 
> 

I probably didn't program it enough to form good habits, but ISTR I spent
an inordinate amount of time deciding whether I  wanted to use the one- 
two-, or three-address instruction forms.

-- 
Pete
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From: Peter Flass <peter...@yahoo.com>
Newsgroups: alt.folklore.computers
Subject: Re: PDP 11/40 system manual
Date: Mon, 13 Aug 2018 07:33:56 -0400
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