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From: michael@nvuxd.UUCP (M.CAIN)
Newsgroups: net.micro.6809
Subject: Short review of Coco Max, and OS-9 question
Message-ID: <143@nvuxd.UUCP>
Date: Tue, 26-Feb-85 09:27:56 EST
Article-I.D.: nvuxd.143
Posted: Tue Feb 26 09:27:56 1985
Date-Received: Thu, 28-Feb-85 12:55:17 EST
Organization: Bell Communications Research
Lines: 24

I recently acquired the new Coco Max (terrible name!) system
for my Color Computer.  Impressive!  It's a MacPaint clone,
and has brought very large portions of that environment to
a very small machine.  It's best feature, from my viewpoint,
is that they added a special cartridge with 8-bit A/D, so the
mouse/joystick can address the entire high resolution screen
without "moving windows" or other artifacts. Total price,
including a Y-cable to hook both A/D and disk controller,
was a hair over $100.  That's quite a bit more than Graphicom
and some of the other packages, but I think you get more.

Now for the question.  With the A/D and the disk controller
both plugged into the ROM slot using a Y-cable, OS-9 refuses
to boot up properly.  I get to the "OS-9 BOOT" screen, then
everything locks up with drive 0 spinning but nothing happening.
With the A/D unplugged, no problems.  Is there anyone out there
who can shed some light on this problem?  I would certainly
like to access the 8-bit A/D from OS-9.  The documentation says
that the unit is located at 0xff90, and that it can be placed
in any slot on the RS Multi-Pak.  Would using a Multi-Pak in
place of the Y-cable help?  Thanks in advance,

Michael Cain
Bell Communications Research