Yes, it is a thing of beauty!  I still have my PDP11 manuals!
David


Harold Hallikainen wrote:

>I REALLY liked the structure of PDP-11 instructions. 3 bits were the mode
>of the source, 3 bits for the source register, 3 bits for the mode of the
>destination, and 3 bits for the register of the destination. The MSBs were
>the instruction itself. By choosing the appropriate mode and register, you
>could put things on a stack, do immediate values (literals on pics), do
>indirect, direct, register, whatever you wanted. Really clever!
>
>Harold
>
>
>
>
>>>Although I have been wondering whether it would be worthwhile these
>>>days to put an entire PDP11 or a small PDP10 into a microcontroller
>>>style configuration (on board memory and peripherals.)  Probably not;
>>>they may have had wonderfully elegant assembly languages, but the
>>>processor core itself isn't too useful unless it runs one of the
>>>popular operating systems as well...  (Hmm.  Did RT11 and RSX and such
>>>get released the
>>>way the pdp-10 software did?)
>>>
>>>
>>That got me thinking and I found that you can find all you want about
>>PDP-11 stuff at:
>>    http://www.pdp11.org/
>>
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