OS/2 v2.0 was the first version of OS/2 to implement the 386's 32-bit
flat memory model. There was still some 16 bit code around and
especially in device drivers but the OS can't run on a 286 with its
segmented memory architecture. The 386 will run 286 code but not
vice-versa.
But don't get me started on Intel architecture. Intel processors and
(mostly) 8-bit support chips were chosen for the first PC by IBM
engineering based on familiarity and proven robustness on prior
products. No software guy would have chosen Intel's segmented 16 bit
architecture when the 32-bit Motorola 68000 was already available.
Unfortunately, the 68000's support chips were deemed too new at the time
to be considered reliable.
Chuck Norcutt
Ian Manners wrote:
> Hi Leandro,
>
>>> OS/2 v2.xx would, even Warp3
>> No, OS/2 Warp (v3) would need 8MiB.
>
> Easy enough to trim it down so it works with 2M, 4M is better. I've
> done it many years ago on a PS/2 386 which I still have around here
> somewere, though I must admit I'd have to do some checking to see
> if it would run on a 286.
>
> Hmm, this isnt the OS/2 Userlist :-)
>
> Cheers
> Ian Manners
> http://www.comkal.net/
>
>
> I'm a weird person in a normal chaotic world.3
>
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