On Mon, 29 Nov 2021 14:48:44 -0500
Post by Andreas KohlbachFirst they took over the OS market with MS-DOS,
Not really, IBM did that for them by commissioning PC-DOS and
arranging to get a lot of DOS software written (a new DOS program every day
I recall being advertised). That killed off CP/M-86, but there was
competition and DR-DOS was a very popular alternative to MS-DOS also there
was GEM and DesqView-X. I'm pretty sure they were in serious danger of
losing the market before they pulled the pre-installed Windows on every PC
stunt.
Post by Andreas Kohlbachbut also were about the only supplier for BASIC;
Hardly, selling a crappy BASIC to Commodore, Tandy and Apple got
them started but nobody else in the eight bit era used their code -
everyone else made tighter and faster BASICs - in the Newbrain a full "16K"
BASIC fitted in 4K of ROM - there was a bit of a celebration when that was
achieved.
Post by Andreas Kohlbachnot only for the IBM PC but almost the whole home
computer rage, killing off CP/M in the process.
A lot of the early CP/M adopters didn't drop it because they had
become used to multi-user and networked systems based around MP/M and
MMMOST. A lot of them turned into unix early adopters and skipped the PC
completely.
When the AT came out one of our customers wanted us to port our
MP/M applications to it because it was new and shiny and IBM. I pointed out
that the AT was a single user system and he wouldn't be able to attach
terminals to it (he had four or five terminals in constant use with a
database application). He didn't believe us at first - surely IBM's
"Advanced Technology" with 16 bits and huge memory could do better than the
MP/M he'd been using for years, we must be mistaken (veiled implication
lying)! So I told him to go and ask the IBM salesman about adding
terminals and running multi-user applications. When next we saw him he had
confirmed what we said and couldn't understand why IBM were so proud of
something so primitive.
We sold him an Altos XENIX system next (they got a lot more
mileage out of an 80286 than IBM ever did - a couple of 80186s doing I/O
helped).
I heard similar stories from other people in the "vertical market"
business at trade shows and supplier events.
Not many people noticed it because the CP/M and MP/M early adopters
were swamped first by the "Now it's a real computer IBM made it" brigade
and then by the clones making it cheap for those who didn't care about the
name. But very few of them switched to the PC and the PC users didn't start
to catch up until Novell by which time they were a nearly invisible minority
mostly using unix boxes with Intel or Motorola or MIPS or ... it didn't
matter much they all had a QIC tape on the front and a bunch of 9 pin
RS-232 sockets on the back, the bigger ones were accused of looking like
fridges.
--
Steve O'Hara-Smith
Odds and Ends at http://www.sohara.org/