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 Message 21042 
 Charlie Gibbs to josef@invalid.invalid 
 Re: OT: horrible 8086 segmentation 
 26 Nov 24 18:50:24 
 
INTL 3:770/1 3:770/3
REPLYADDR cgibbs@kltpzyxm.invalid
REPLYTO 3:770/3.0 UUCP
MSGID:  7e39af52
REPLY:  4b4b1c9c
PID: SoupGate-Win32 v1.05
On 2024-11-26, Josef Möllers  wrote:

> On 25.11.24 18:33, mm0fmf wrote:
>
>> My eyes! My eyes! That was COMPACT model code, so 64k of code and 1MB of
>> data, code addresses were 16bit offsets to the CS reg and data was far
>> so 32 bits of segment and offset of DS or ES. And of course you had to
>> be extra careful of any pointer arithmetic as a far pointer wrapped
>> after 64k. You had to use slower HUGE pointers to get automatic
>> normalisation. God it was shit.
>
> And to consider that, at that time, processors like MC68000 or NS32016
> were readily available.

Which proves once again that a shitty design beats a good one
if it's released first.

Everybody was yapping about the 640K barrier.  I was more concerned
with the 64K barrier.  I remember manually normalizing pointers
everywhere, and if I wanted to work with a large arrays of structures
I'd copy individual structures to a work area byte by byte so I
didn't get bitten by segment wrap-around in the middle of a structure.

As the joke goes, aren't you glad the iAPX432 died out?
Otherwise a truly horrible Intel architecture might have
taken over the world.

--
/~\  Charlie Gibbs                  |  Growth for the sake of
\ /        |  growth is the ideology
 X   I'm really at ac.dekanfrus     |  of the cancer cell.
/ \  if you read it the right way.  |    -- Edward Abbey

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