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Article #1417

reading PRO 3xx disks on a PC/AT

#1417
From: EVERHART%ARISIA.DECnet
Date: Thu, 28 Apr 1988 15:31
30 lines
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 So your friend went back to the late-60's style, eh?
 There are some pieces around which may help him/her get files across, but
it'll take a bit of work.
 First, reading the RX50 media. There's a driver for msdos (RX50.arc on
various BBSs) which will read and write (but NOT format) RX50 media on
the PC/AT's 1.2 meg diskette drive. That works nicely and will handle
media from Rainbows out of the box.
 However, on a Pro one runs either RT11 or POS, which uses the RSX-11
file structure. In the case of RT11, there are sources around in the
CP/M world at least (on simtel20?) that let you read RT11 media under
CP/M. These ought not to be TOO hard to hack up.
 Under RSX, a program called GETRSX is available. It has even appeared
somewhere in the DECUS library, though probably on a SIG tape (read those
abstracts CAREFULLY). Its purpose in life is to read ODS-1 file
structures (which the pro uses) and grab files off them under different
OS's. It was written for unix or rt-11 (don't know which), but again
since the C sources ARE available, some hacking ought to get it across.
  You'll need to add ability to use named directory files of up to 9
characters, instead of the numbered 6 character octal directories;
P/OS shares with the newer RSX versions the use of named rather than
numbered directories. You also may want to figure out something to do
with filename and version conflicts; the RSX namespace of 9.3 chars
and version numbers introduce problems where you just try to copy
things over.
 These look to me like the most promising approaches. If the pro is still
available, of course, I suggest simply Kermiting over whatever is
desired.
 Glenn Everhart
Everhart%Arisia.decnet@ge-crd.arpa
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From: EVERHART%ARISIA.DECnet@GE-CRD.ARPA
Newsgroups: comp.sys.dec.micro
Subject: reading PRO 3xx disks on a PC/AT
Message-ID: <Added.4WRopoy00Ui3IziE8e@andrew.cmu.edu>
Date: 28 Apr 88 15:31:00 GMT
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