I really wouldn't know. I remember being shown the drives, which were very
large and cumbersome considering the small capacity. One's conception of such
things changes over time, though, doesn't it?
Dick
----- Original Message -----
From: "Peter C. Wallace" <pcw(a)mesanet.com>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, April 22, 2002 8:37 AM
Subject: Re: Bad Classic Operating Systems (was: Micro$oft Biz'droid Lusers)
On Mon, 22 Apr 2002, Richard Erlacher wrote:
> What sort of drives were the intended target of this OS? I had a
colleague
> who had a couple of "DF32" drives for
his PDP8E (wirewrapped CPU, BTW)
which
> he was never able to utilize, and I've always
wondered just how those
drives,
with their
small capacity, fit into the scheme of things.
Dick
Isn't the DF32 a 32 Kword fixed head drive? I think it was used for
multi-user
PDP8 systems (like a drum)
> ----- Original Message -----
> From: "Loboyko Steve" <sloboyko(a)yahoo.com>
> To: <classiccmp(a)classiccmp.org>
> Sent: Monday, April 22, 2002 7:42 AM
> Subject: Re: Bad Classic Operating Systems (was: Micro$oft Biz'droid
Lusers)
I've been playing with my clone PDP-8's
OS-8
installation, and I would say at first glance that you
might think it was awful, but when you consider that
it is running in 32K (x 12 bits, but still...) of RAM,
has highly "regular" commands, has installable device
drivers, and has a large degree of device independence
it's really very amazing. I could say the same thing
about Flex for the 6800 and 09. Considering their
severely limited resources, pretty darned good.
--- Hans Franke <Hans.Franke(a)mch20.sbs.de> wrote:
> Apple's DOS 1 and 2 had no files, or so I hear.
AFAIR there was never a Apple DOS 1 - the first was
called 2
(like in Apple 2, Disk 2, Dos 2) and was written by
the Woz
himself. Soon to be replaced by DOS 3 (only the low
level and
the RWTS functions taken from DOS 2 _ which barely
was more
than that), which again soon developed into 3.2 (all
over a
period of less than a half year). 3.2 was more or
less the
standard DOS for over a year, and the one commonly
seen as the
first public release. Some time later (1980?) 3.3
came around
and the 16 sector format, picking up a development
done for the
UCSD Pascal System (Well, the P-System required you
to change
the boot PROMs for 16 sector format, and if you
wanted to use
DOS and the P-System, you either had to swap PROM
all the time,
or have at least two controllers, and boot via
monitor (or basic)
command line). Otherwise 3.3 was more or less
unchanged from 3.2.
So the main trick was the conversion from 13 sectors
and 117 K
to 16 sectors and 143 K per disk (side).
Well, looking back, your're right - at least Apple
DOS 1 never
supported files, because it didn't exist :)
Gruss
H.
--
VCF Europa 3.0 am 27./28. April 2002 in Muenchen
http://www.vcfe.org/
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