Subj : Re: RP2350 and Pico 2 - things missing
To   : Single Stage to Orbit
From : The Natural Philosopher
Date : Thu Aug 22 2024 11:24:40

On 22/08/2024 11:00, Single Stage to Orbit wrote:
> On Thu, 2024-08-22 at 09:17 +0100, The Natural Philosopher wrote:
>> IIRC 8086 was the same for conditional jumps.
>>
>> In fact the whole small model thing was coding for a 64k page.
>>
>> There were a few instructions that worked across pages...but my
>> memory is dim.
>
> FAR and NEAR specifiers used with JMP were often used for intra segment
> calls. Data could also be accessed with the same specifiers too, hence
> there were five different memmory models, tiny, small, medium, large
> and huge with different code and data accesses.

Yes, that all sounds vaguely familiar. All that forgotten knowledge that
I will take to the
grave with me, where, arguably, it belongs...

It was a horrible processor to do assembler on, but I made a living out
of it for several years.

Thank Clapton for 'C' and Unix/Linux/Gnu and the 386 series at which
point one no longer had to...
--
No Apple devices were knowingly used in the preparation of this post.

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