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From: an288@cleveland.Freenet.Edu (Mark Hittinger)
Newsgroups: comp.sys.dec
Subject: re: reading RT-11 floppies on 1.2Mb AT drive
Message-ID: <9103091821.AA21690@cwns1.INS.CWRU.Edu>
Date: 9 Mar 91 18:21:43 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: an288@cleveland.Freenet.Edu
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Hi -

I developed a utility to do this awhile back, the fundamental technology
is widely avaiable in an rx-50 device driver that is in the public domain.

The rt-11 file structure is documented in the rt-11 manual set, I think there
is a one or two page part that is important (involving the header and the
directory).

I can send you the source code for this, it is written in oregon pascal-2
but should be pretty understandable.  The code asks for a drive number, and
copies all the files off the floppy and onto the current directory (ms-dos).

As I remember there was a slight pain in the ass with this involving sector
interleaving......

good luck...

Mark Hittinger
an288@freenet.cleveland.edu

--
Mark Hittinger [answering machine (606)-272-2424
PO BOX 43358
Middletown, KY 40243