Re: OT: horrible 8086 segmentation

Liste des GroupesRevenir à cs raspberry-pi 
Sujet : Re: OT: horrible 8086 segmentation
De : josef (at) *nospam* invalid.invalid (Josef Möllers)
Groupes : comp.sys.raspberry-pi
Date : 26. Nov 2024, 18:37:02
Autres entêtes
Message-ID : <lqmf9uF4bggU1@mid.individual.net>
References : 1
User-Agent : Mozilla Thunderbird
On 25.11.24 18:33, mm0fmf wrote:
[...]

e.g.
"
     // start of barrel
     EventRec far* searchp = (EventRec far*) work.bufs;
 "
  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.
Josef

Date Sujet#  Auteur
25 Nov 24 * OT: horrible 8086 segmentation15mm0fmf
26 Nov 24 `* Re: OT: horrible 8086 segmentation14Josef Möllers
26 Nov 24  +- Re: OT: horrible 8086 segmentation1mm0fmf
27 Nov 24  +* Re: OT: horrible 8086 segmentation4The Natural Philosopher
18 Dec 24  i`* Re: OT: horrible 8086 segmentation3Lawrence D'Oliveiro
18 Dec 24  i `* Re: OT: horrible 8086 segmentation2Kerr-Mudd, John
19 Dec 24  i  `- Re: OT: horrible 8086 segmentation1Lawrence D'Oliveiro
1 Dec 24  `* Re: OT: horrible 8086 segmentation8Robert Roland
1 Dec 24   `* Re: OT: horrible 8086 segmentation7The Natural Philosopher
1 Dec 24    `* Re: OT: horrible 8086 segmentation6Richard Kettlewell
18 Dec 24     `* Re: OT: horrible 8086 segmentation5Lawrence D'Oliveiro
23 Dec 24      `* Re: OT: horrible 8086 segmentation4Brian Gregory
23 Dec 24       `* Re: OT: horrible 8086 segmentation3Lawrence D'Oliveiro
24 Dec 24        `* Re: OT: horrible 8086 segmentation2Michael J. Mahon
24 Dec 24         `- Re: OT: horrible 8086 segmentation1mm0fmf

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