[Coco] [Color Computer] The evolution of the Coco..

[David Hazelton]

John R. Hogerhuis wrote:

> 
> Take it with a grain of salt though since I've never used any of those.
> Went straight from RS-DOS to OS9L1 then OS9L2.
> 
> MS-DOS is tied to the PC architecture so although you could make a
> MS-DOS command prompt simulator, binary compatibilty with DOS utilties
> is not possible. MS-DOS is a reasonable way to run a coco emulator on a
> PC though.
> 
> 
> Hey, I recall ads for some giant sidecar thing for the coco that ran
> some kind of alternative OS. Was it CP/M?
> 
> My choice for a minimalist coco OS would boot up in a nice forth
> development environment + assembler in ROM, with no OS and just the
> blocks system to access the disk drive.
> 
> -- John.
> 
> 

I remember that, it was a Z-80 processor cartridge that you stuck 
between your CoCo and your floppy drive.  It must of just put the 6809 
in halt mode and took over the CoCo's keyboard, video and Floppy.

Someone should try that now,  maybe a G5,  Can you underclock a cpu? :)

~David Hazelton