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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Received on Mon Apr 22 2002 - 08:42:56 BST