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_at_yahoo.com>
> To: <classiccmp_at_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_at_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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> >
> >
>
>
Peter Wallace
Received on Mon Apr 22 2002 - 09:37:32 BST