13 May
2013
13 May
'13
4:45 a.m.
Am 13.05.2013 04:43, schrieb Guy Sotomayor:
On May 11, 2013, at 9:40 AM, Robert Ferguson <rob
at bitscience.ca> wrote:
Not having seen the PPC source, but the 86/286/386 monster of
OS/2-kernel source (3.x), I can only agree. I consider it almost
impossible, without a complete rewrite and then only - as in the PPC
implementation - with largely different APIs to port this thing to
anything else, including PDP-11. Given the 386 ring architecture, it
would be more likely to transfer a look-alike to a VAX, but not to a PDP
with MMU. But even then; the question is: what benefit would there be?
DEC systems were already a dying platform at the time of OS/2, and lack
of any compatibility to the original x86-based system would gain
nothing. Even the PPC was not a success, not only because of the obscure
CHRP architecture no other vendor used, but also because of the lack of
killer application or migration path. Apple those days did it better in
providing an emulator to run older 68K apps on the PPC.
--
Holger
It didn't happen, at least not at IBM or
Microsoft during the Joint Development Agreement era. It would have been physically
impossible.
After IBM had OS/2 to itself, all sorts of strange things went on. So, I can't
completely discount a port after that point. I would be extraordinarily surprised if IBM
had targeted DEC hardware, though.
But up until "the divorce", I can unequivocally state that no such thing
happened.
As I said, the only "port" was to PPC but that contained 0
(zero) source from the OS/2 kernel.
TTFN - Guy