Extracting CDOS and CP/M) files
Roy J. Tellason
rtellason at verizon.net
Wed Oct 10 19:36:45 CDT 2007
On Wednesday 10 October 2007 20:23, Fred Cisin wrote:
> On Wed, 10 Oct 2007, Dave Dunfield wrote:
> > Sorry, I haven't delved back into the CDOS/CPM filesystem yet - It's been
> > years, and I haven't found a good technical description yet (any
> > pointers?)
>
> I can't immediately find one to point you to, so here is an off the top of
> my head rundown of the CP/M DIRectory structure (which may be completely
> indecipherable without illustrations or more careful wording):
(Snip)
Let me add to that the high bit of the "name" and "type" fields being used
for "attributes", like a file being read-only, etc. Some of these were
pretty consistent and some of them varied from one implementation to another,
thinking CP/M, CDOS (which I have no direct expierience with), Turbodos,
MMMOST, and so forth. Some were, I think, "user flags", which an
application could use, as well.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
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Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
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