RX50 floppies on your PC/AT

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2 total messages Started by Thomas J. Trebisky Tue, 12 Feb 1991 20:23

#894

Author: Thomas J. Trebisky
Date: Tue, 12 Feb 1991 20:23

24 lines
1547 bytes

I tried mailing this, but herbert@flp.uucp didn't cut it.

I have a public domain thing called RX50DRVR that I use with the 1.2 Meg
drive on my AT to read (and write) the RX50 floppies from my rainbow.
Works great (and especially handy because the AT is on the net).
I don't know if the Pro350 RX50 drives are compatible, but I bet they are.
This driver will read and write the RX50 floppies fine, but you must format
them on your DEC machine.  I got this anonymous FTP from somewhere ...
lemmee see now.

OK, I got it from drycas.club.cc.cmu.edu  128.2.232.11 on the internet.
cd [anonymous.info-dec-micro]  they even had the source, rx50src.zip.
Of course you need the usual unzip tools to unpack the stuff (and of course
you should set binary before the retrieve)  let me know if you have any
trouble.

BTW - it isn't public domain software if the source code isn't distributed.

	Tom Trebisky	ttrebisky@as.arizona.edu	(Internet)
	Steward Observatory	University of Arizona	Tucson, Arizona

--
	Tom Trebisky	ttrebisky@as.arizona.edu	(Internet)
	Steward Observatory	University of Arizona	Tucson, Arizona

Re: RX50 floppies on your PC/AT

#896

Author: Steve Mitchell
Date: Wed, 13 Feb 1991 03:54

30 lines
1880 bytes

tom@astro.as.arizona.edu (Thomas J. Trebisky) writes:

>I tried mailing this, but herbert@flp.uucp didn't cut it.

>I have a public domain thing called RX50DRVR that I use with the 1.2 Meg
>drive on my AT to read (and write) the RX50 floppies from my rainbow.
>Works great (and especially handy because the AT is on the net).
>I don't know if the Pro350 RX50 drives are compatible, but I bet they are.

Well, it will probably _read_ a Pro350 floppy, but the AT won't know
what to do with it.  The physical format (tracks and sectors) is the
same (in fact, since DEC saw fit not to provide formatting software
with P/OS lots of us Pro300 users format our floppies on Rainbows, or
on AT's with suitable foreign-format software), but the logical format
(placement and structure of the directory, etc) is totally different.
Rather than being based on the MS-DOS filesystem with boot sectors,
FATs, etc, it uses the Files-11 Level 1 format which was introduced by
DEC with the RSX-11 operating system family and used in slightly
modified form (Level 2) by VMS.  This is a much more sophisticated
file system designed for REAL computers ;{)

>--
>	Tom Trebisky	ttrebisky@as.arizona.edu	(Internet)
>	Steward Observatory	University of Arizona	Tucson, Arizona

-- 
		-  Steve Mitchell	steve@cps.altadena.ca.us
					grian!steve@elroy.jpl.nasa.gov
					ames!elroy!grian!steve
"God is licht, an in him there is nae mirkness ava." -- 1 John 1:5

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