Re: Disk 2 controller card issue, or maybe not?

[Dave T <hucklecat97@gmail.com>]

On Oct 8, 11:35 am, "ict@ccess" <gids...@sasktel.net> wrote:
> The C600 listing should start out like this
>
> C600 - A2 20  LDX #$20
> C602 - A0 00  LDY #$00
> C604 - A2 03  LDX #$03
>
> This is the firmware of the card and should indicate the code is not
> scrambled
>
> Since the PR#6 command started the drive, and it rattled it is safe to
> assume that the code is good so the card for the most part should be
> good, although there is the possibility that the end of the firmware
> code where it jumps to the program just loaded at $800 might be
> scrambled
>
> Although you have tried a couple of game disks, do you have any other
> disks, like a DOS 3.3 master disk or some other operating system disks
> to try?
>
> If you want to see what scrambled code looks like, do a C600L or C700L
> with the slot empty


Ok, the card is all ok.  Something is up with the drive.

What I did was try out the bootstrapping method with ADT Pro through
the audio/cassette.  Everything seemed to work ok up until I tried to
format the disk.  While the program saw the drive there a-ok, the
problem occurred when I tried to format several different disks.  All
of them came back telling me that something was wrong with the disk or
the drive door.  The drive is trying something, as it's making
different clicks and rattles before giving up.  (It's not the disks,
as I've used different disks from different manufacturers and
different sources.)

The drive that I have is a Rana Systems Elite One.  I figure I'll open
it up and clean it out some, and see if there is anything wrong with
it from a mechanical standpoint, hopefully it's something I can fix.
Otherwise I have to try and find a working 20-pin Disk ][ or a Unidisk
with the 20 to 19 pin cable without getting ripped off.

Thanks again guys for all your help, without you I would still be
thinking it was the card.