6 May
2009
6 May
'09
4:30 a.m.
The
Compaticard IS NEC 765 (or indistinguishable copy)
Then I'm at a loss as to what the problem is. I can configure the system
such that the Compaticard is the primary controller (disable the on-board
FDC in the BIOS). The first 8" drive is unit 2 (in 0..3) and mapped as
drive D:. I did try lying to IMD and telling it that drive was 1.2, but
testfdc immediately returns an error without anything obvious having
happened. In the IMD application itself, I can select format and
it loads the heads,
pauses a moment and returns a "write protect" error.
That's about when I threw in the towel. The drive and card work perfectly
under Teledisk, 22disk, etc, etc. and I was able to write a usable boot
disk on it after a kind list member sent me a TD0 image.
I can help figure this out if you want to contact me off-list.
Here's some things to try:
- Does imagedisk work OK with standard PC drives on A: or B:
- If not, then the controller is probably not a standard PC controller.
(Does it work at all without special drivers loaded?)
- If yes, does it work with the standard drive on C: or D:
- If no, then the drive 2-3 selection is probably different from the
one implemented in ImageDisk (this is non-standard)
- If yes then it may be the 8" drive configuration - perhaps the
Compaticard wires it differently that I do (details of my 8" connections
are in the help)
- Since you now have good media ... can you READ a disk in the 8" drive
with ImageDisk?
Dave
--
dave09 (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html