24 Mar
2007
24 Mar
'07
3:39 a.m.
On 3/23/07, Glen Slick <glen.slick at gmail.com> wrote:
I have an ACS8000-7 dual floppy and an ASC8000-10 floppy / hard drive.
On both of them I get the monitor prompt to insert a floppy for
autoboot (the -10 fails the hard drive boot first). I tried creating
floppies from ACSBTMD1.IMD and DIAG26K.IMD and I don't get any
indication that anything is happening on either system with either
floppy. No additional output on the terminal and it doesn't appear
that the floppy is seeking at all.
Problem solved. I took a break and whlie out taking the dog for a
walk I started thinking about something I observed that puzzled me a
bit but dismissed at the time. I was creating the disk with a Tandon
TM848-2 and double sided disks and when I was looking at disk spinning
in the drive in the ASC8000 I thought it odd that the index hole
didn't appear to line up with the index sensor on the drive.
While out walking it occured to me that maybe a single sided floppy
has the index hole in different position. Just now I opened up a box
of single sided floppies that I was lucky to have on hand and took a
look a the index hole location and that answered my question. I just
now created a singled sided disk from the ACSBTMD1.IMD image from
Richard on the TM848-2 which I now see has two index sensors and it
booted up right away on the ASC8000 with the singled sided Shugart 80x
drive.
Learn something new every day. 8-inch floppies were just before my
time so I'm a little ignorant about their details.
-Glen