On Thu, 27 Feb 2003, Tony Duell wrote:
Aparently, the
Drive 0: is bad. Replacing it with the 1: or an
Does the spindle motor run on this drive when you try to boot from it?
Does the LED come on?
Sorry, guess I should have been more specific. The (drive that was
0:) drive spins, and the LED comes on, but the machine still says "Cass?".
The other drive (which I had replaced it with) attempts to read from the
disk, and either displays "Diskette?" or nothing if there's no disk in the
drive or a disk, respectively.
IBM-branded
Tandon drive from an IBM 5150 PC, it seems to try to boot from
What have you done about the termination resistor pack (the 'odd coloured
IC' on the drive logic board)? The machine will not do the right things
if the last drive on the cable is not terminated.
Maybe this is part of the problem. Neither drive has a terminator on it.
What resistance is it? I could probably try making one out of spare
resistors or buying a new resistor pack for it.
Still, it seems strange that it was probably used without a terminator,
and that's the cause of the problem.
Mostly. It is standard MFM encoding (well, the TRS-80
can do FM (single
density) too, but the M3 and M4 at least expect the boot sector to be
double desnisty, and the standard OSes use double density (MFM) encoding
for the entire disk.
I would like to try to make an image from the disks I have, is there a
program that works under Linux with a standard floppy disk controller to
read disks and spit out .dsk files?
I've not written one yet (although it would not be hard to do). However,
I belevie xtrs can do this (BACKUP from a physical disk to an emulated
one). Since I don't run X, I can't be sure, though.
I haven't seen anything in xtrs that lets me use a physical disk, only
disk images. Does anyone know if I'm mistaken and xtrs will read disks?
Pat
--
Purdue Universtiy ITAP/RCS
Information Technology at Purdue
Research Computing and Storage
http://www-rcd.cc.purdue.edu