Re: Commodore PCs

From: J. Alexander Jacocks <>
Date: Thu, 15 Oct 2015 12:03:15 -0400
Message-ID: <>
The only Commodore UNIX that I know of is a System V-derivative (Amix) that
ran on the A3000UX.  I wasn't aware that they had any any x86-compatible
UNIX projects.

- Alex

On Thu, Oct 15, 2015 at 11:58 AM, william degnan <>

> I always forget about the PC line.
> What might be fun is making a souped-up UNIX OS system out of one.  See if
> you can run that version of UNIX Commodore was playing around with, forget
> the name.
> b
> On Thu, Oct 15, 2015 at 10:49 AM, Ethan Dicks <>
> wrote:
>> On Thu, Oct 15, 2015 at 3:04 AM, Baltissen, GJPAA (Ruud)
>> <> wrote:
>> > We are mainly talking about the 8-bitters. But I also tinker with PCs,
>> the very old ones of course. And those include the Commodore ones.
>> >
>> > My questions:
>> >
>> > - Is anybody else on this list interested in the Commodore PCs?
>> I have a Commodore PC-10 I need to repair - the NiCd battery leaked
>> and I need to repair it (since I doubt I'll find a replacement
>> mainboard easily).  The damage is about 2cm x 5cm, so I'll have a
>> number of passive components and a couple of ICs to remove before I
>> can get into any trace repair.  :-(
>> > - If so, would anybody object discussing these PCs on this list?
>> It seems not.
>> By way of extending the discussion, I used to use this PC-10 to run my
>> B&C Microsystems EPROM and GAL programmer.  I put an 8-bit NIC in it
>> and the proprietary parallel card for the device programmer.  I used
>> Kermit and its internal TCP/IP support (with a packet driver for my
>> NIC) to get files into the machine.  When the leaking battery killed
>> the machine, I had to switch to a Compaq to burn my devices.  I have
>> to use an older machine with this programmer.  There appear to be
>> software timing loops that cause it not to function on anything faster
>> than about a 16MHz 80286 (a 4.77-8Mhz 8088 is just fine).  Even a
>> 25Mhz 386 is "too fast".  It must be something to do with how fast I/O
>> bus accesses are when the ISA bus is _not_ directly connected to the
>> CPU.  I never investigated wait state or other options.  It was just
>> easier to keep an old machine working than investigate new machines.
>> I do have the XT-IDE drive for mine, but I don't have a lot of spares,
>> so when that disk drive dies, I'll probably have to switch to an ISA
>> disk - fortunately, I have one or two 8-bit SCSI cards with boot ROMs,
>> so I won't have to find a working MFM drive.
>> -ethan
>>        Message was sent through the cbm-hackers mailing list
> --
> Bill

       Message was sent through the cbm-hackers mailing list
Received on 2015-10-15 17:00:07

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