On 22/01/2021 13:34, The Natural Philosopher wrote:
> On 22/01/2021 13:22, gareth evans wrote:
>> In my retirement, I have some ideas on language
>> development, essentially interactive as was BASIC
>> and FORTH but running at the speed of compiled
>> code, and the 64 bit ARM instruction set looks
>> like a good starter.
>
> FORTH was good stuff speed wise
>
>

I never used it in anger, but spent a lot of time thinking
about it. I seem to have on my bookshelf most of the FORTH
and TIL primers. I was considering something like a FORTH
but not being based upon Reverse Polish.

ISTR that FORTH on an RCA 1802 is in the Voyager missions?

Now, that was a weird instruction set! ISTR 8-off 16 bit
registers but no 16-bit moves, all having to be done in
8-bit chunks through the accumulator, and no conventional
subroutine call but change which of the 16-bit registers
at any time was the program counter!

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