Subj : Re: RP2350 and Pico 2 - things missing
To   : The Natural Philosopher
From : mm0fmf
Date : Fri Aug 23 2024 10:26:51

On 23/08/2024 10:17, The Natural Philosopher wrote:
> On 22/08/2024 11:57, Ahem A Rivet's Shot wrote:
>> On Thu, 22 Aug 2024 11:00:26 +0100
>> Single Stage to Orbit <alex.buell@munted.eu> wrote:
>>
>>> FAR and NEAR specifiers used with JMP
>>
>>     The obscenity was these qualifiers making their way into C source
>> code - try writing (or even reading) the declaration for a near
>> pointer to a
>> function returning a far pointer to an array of functions returning near
>> pointers to integers.
>>
>>     Then realise that you *also* wanted this source code to be portable.
>>
> I don't recall them ever appearing in C source. They are not part of the
> C language.
> AIR you could compile for 'small model' or 'large model'
>
> And with the early compilers I used, no attempt was made to think about
> whether a jump was near or far.
>
> I think you got an assembler or  linker error if a target was 'out of
> range'
>
>
No I remember the joy of using NEAR and FAR in C for 8086 code. I can
remember being forced to use them in zORLAND C/Zortech C++ and Borland C
on 8086 code for PCs running DOS and in embedded 80186EB code.

https://www.geeksforgeeks.org/what-are-near-far-and-huge-pointers/
https://en.wikipedia.org/wiki/Digital_Mars

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