Unixlike, multitasking 6502 (was Re: Nuke Redmond!)

From: THETechnoid_at_home.com <(THETechnoid_at_home.com)>
Date: Tue Jan 16 14:31:50 2001

There are quite a number of multitasking 6502 machines out there.
Homebrews and C64s are represented.

The 'distribution' is called OS/A65.

There was an early attempt for the Atari 8-bit called Mtos back in the
mid-80's. You could assign individual tasks a defined number of 'time
slices'. It was pretty neat but wasn't 'unixy'.

You might find what Andre has done with OS/A65 as a good starting point as
the source code is freely available.

Can you make a 6502-based machine 'do' virtual memory? If you can, maybe
we can port NetBSD to the Atari 8-bit. It might take a year to boot but
it would be a fun project. The way the Atari handles disk I/O makes me
think it is possible. Something like the Spartados X code substitution for
the standard SIO calls I think. Spartados X is a fantastic peice of work.
I've not seen anything that comes close to it (while maintaining
compatability with existing software that is).



In <200101112045.MAA10918_at_stockholm.ptloma.edu>, on 01/16/01
   at 03:31 PM, Cameron Kaiser <spectre_at_stockholm.ptloma.edu> said:

>I run AIX and NetBSD myself! :-) And, one of these days when I get my
>6502-on-6502 virtual CPU implementation done, my C64 will run my own
>Unixy flavour too (just to make this on-topic somewhat).

Jeffrey S. Worley
Complete Computer Services, Inc.
30 Greenwood Rd.
Asheville, NC 28803
Visit our website at HTTP://www.Real-Techs.com
Received on Tue Jan 16 2001 - 14:31:50 GMT

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