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From: jimomura@lsuc.UUCP (Jim Omura)
Newsgroups: comp.sys.m6809
Subject: Re: CHD problem
Message-ID: <1737@lsuc.UUCP>
Date: Sun, 19-Apr-87 23:36:42 EST
Article-I.D.: lsuc.1737
Posted: Sun Apr 19 23:36:42 1987
Date-Received: Mon, 20-Apr-87 01:36:55 EST
References: <1987Apr6.165809.16100@gpu.utcs.toronto.edu> <872@vaxb.calgary.UUCP>
Reply-To: jimomura@lsuc.UUCP (Jim Omura)
Organization: Consultant, Toronto
Lines: 32
Summary: Hardware after all.

In article <872@vaxb.calgary.UUCP> ingoldsby@calgary.UUCP writes:

>Has ANYONE managed to get the CC3Disk driver to work well with 80 track double
>sided disks?  I think there is an initialization problem since once it did
>work reliably for me (I had just been messing with some old CoCo2 software that
>I think put the machine in an unusual stae).  Is anybody else having troubles?
>Perhaps OS9 Level II doesn't like my old controller (I've added +/- 12v).
>OS9 Level I thinks its OK, though.


     Having read the report on the hardware fix, and having 3 disk
controllers, I decided to do a test.  My Disto controller worked
fine.  Yes, I now have 80 cylinders/double sided running!  The
problem is that there seems to be a design conflict here.  The
*only* controller I had that would read single *density* was my
original Shack controller under Level I at 0.9 mHz.  Now, the
Disto *might* be able to read single density at 1.8 mHz., but
I haven't got software capable of trying that yet.  It seems I
have to have 2 controllers and 2 systems to do everything I want
for the time being.  The Disto, to handle Level II properly, and
the Old Shack controller to handle single density track 0 for
OS-9 Standard format.

     I dunno.  Maybe I'll end up with the Sardis controller.

Cheers! -- Jim O.


-- 
Jim Omura, 2A King George's Drive, Toronto, (416) 652-3880
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