28 Jul
2004
28 Jul
'04
4:53 p.m.
On 7/28/2004 12:00 PM -0500, cctech-request(a)classiccmp.org wrote:
Date: Tue, 27 Jul 2004 22:46:49 -0500
From: Doc Shipley <doc(a)mdrconsult.com>
Subject: Re: 8" floppy project
..
And I need to be able to accurately copy a bootable
RX02 diskette to
a formatted blank.
I'd *like* to be able to take a disk image of a floppy as a file, and
to write that back out to floppy, but that's gravy.
I wrote a set of FORTRAN programs that did that running on RSX-11.
I was archiving CP/M diskettes onto RL02s when I worked in TWO.
I could read the disks to a file and write multiple copies of CP-MUG
distribution diskettes for the New England Computer Society.
I don't remember if I ported it to VMS. You needed to have PHYSIO
priviledge, and mount the drive FOREIGN, since FCS/RMS kept trying to
interpret the floppy as a DEC file system media. I don't remember if I
used QIOs or some other FORTRAN file construct.
The programs weren't that hard to write, they did require a bit of
work to unmap the sector interleaving. They were CP/M standard
specific. I even wrote a program that would print a DIR from the image
file. I'm sure the programs been lost to time. The CP/M diskettes
however, I still have a large box of in the basement.
Dave.