27 Feb
2003
27 Feb
'03
1:15 a.m.
From: Patrick Finnegan <pat(a)purdueriots.com>
Aparently, the Drive 0: is bad. Replacing it with
the 1: or an IBM-branded Tandon drive from an IBM
5150 PC, it seems to try to boot from the disk. No
disk in the drive (or the disk upside down) yields a
"Diskette?" message on the display. A disk placed
right-side up, which should be bootable, gives no
messages on the display after power-up or reset.
However, with a disk inserted, the drive light (and
motor) turn> off after approx 7 seconds.
Ok..
Take a look at your "1:" drive. Near the connector you
should see a socket with something that looks kind of
like a chip in it.
But, it will have 4 metal bridges and three will be
broken. On your "0:" drive the first one will be in
place and 2 - 4 will be broken.
On the "1:" drive, the first, third and fourth should
be broken and the second bridged.
If you swap these between the two drives, you ought to
be able to turn the "1:" drive to a "0:" drive.
As for your IBM drive, it is probably jumpered for DS1
("1:" drive). If you can find the jumpers on the logic
board, move the jumper from DS1 to DS0 if you'd like
to try to use that as the "0:" drive (leaving the "1:"
drive as-is).
Let me know if that helps you.
I tried using a boot disk that I got with the
machine, and a fresh one from a .dsk file of LS-DOS
6.3.1H from Tim Mann's web site, using Tony's
trsfmt and diskdmp. The image works with xtrs too,
so I'm fairly confident that it should work when
stuck on a floppy.
Sounds ok to me...
Regards,
Al