On 1/9/2012 12:00 PM, MikeS wrote:
----- Original Message:
Date: Mon, 09 Jan 2012 08:13:10 -0800
From: Josh Dersch <derschjo at mail.msu.edu>
...
Right now I have both a 16FDC and a 64FDC to play with (one is on
loan). I'm using Dave Dunfield's RDOS transfer utilities to upload the
"INIT" software into RAM from a PC.
...
I'm wondering if there's some fundamental problem with my current set-up
that's causing issues here...
- Josh
----- Reply:
Have you tried creating a bootable Cromemco format disk (CDOS or CP/M)
from an image? Even if it's a configuration that doesn't match yours,
you could at least run some diagnostics on the diskette using RDOS.
I've created a few floppies from my PC on a 5.25" drive using ImageDisk,
I have been unable to get the FDC to read them (or boot, obviously). I
wasn't 100% sure it wasn't just the setup I have on my PC getting in the
way, hence my latest attempt to use the FDC itself to write the disks.
The 5.25DD format can be troublesome to create, but generally an 8"
image on a 5.25" HD disk & drive is no problem, especially if you can
use the same physical drive in the PC and the Cromemco and avoid any
alignment issues.
Yeah, I didn't appear to have any issues writing the disks from the PC,
though I don't have any way of knowing if they turned out correct at the
moment :)
You are aware that using a 5.25HD drive as an 8" requires a jumper to
connect /READY to the FDC's 5.25" interface?
I was not aware, but the 16/64FDC has connectors for both 5.25" and 8"
drives, I've been using the 5.25" connector and the controller seems to
be able to communicate with it OK -- it has no trouble seeking and
formatting tracks... it just can't read or write them at the moment...
Thanks,
Josh
mike