On a sunny day (Tue, 17 Apr 2018 10:15:29 +0100) it happened Gareth's
Downstairs Computer
  wrote in
:

>On 17/04/2018 06:22, Rob Doyle wrote:
>> On 4/16/2018 11:40 AM, Gareth's Downstairs Computer wrote:
>>> I wonder if anyone has implemented a blinkenlights
>>> interface for the RPi, so that one is not reliant on the
>>> complexity and reliability of VDU monitors, mice and
>>> keyboards?
>>
>>
>> http://retrocmp.com/projects/blinkenbone
>>
>> There are kits for PDP-8s and soon PDP-11s
>>
>> There are others for Altair, etc.
>>
>> Rob
>
>I have one of these kits, awaiting assembly ...
>
>http://obsolescence.wixsite.com/obsolescence/pidp-8
>
>But wnat I wish is to educate myself with an in-depth
>knowledge of the ARM8 instruction set, including its
>binary encodings for when I pick up the threads of
>an of-interest-to-me language development that I
>put to bed 30 years ago, now that I'm retired with
>nothing to do, and all day to do it in!
>
>The world of 64 bit has arrived in the home laboratory,
>and I feel it to be time to do away with all computers
>where you have to spend some time programming your
>way around the limitations of them; including
>32bit ARM with its 4GB address limitations!
>
>(The worst cases in my experience being the 8051
>and the 6303; both encountered during my professional
>life as a real-time softy!)

Ah, 8051, I still have a 8052 BASIC system in the attic:

http://panteltje.com/pub/8052AH_BASIC_computer/8052AH_BASIC_computer_inside2_im
g_1757.jpg
Wrote some very simple assembler for it once:
 http://panteltje.com/panteltje/newsflex/download.html#a52
No experience with that Motorola chip.

8051 is still being made I think, was not so bad, register banks...
I have sort of standardized on PIC 18F14K22, 64 MHz.

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