[Coco] Four floppy drives?

[David Gettle]

When I was in college I was running 2 5.25 and 2 3.5" DSDD floppy drives
off a FD502 card from Radioshack with no problems, all I had to do was set
the drive jumpers and have a custom cable made. amazing that the CoCo would
allow me to format all of them at the same time in OS-9. I Ticked off some
UNIX users because their unix boxes couldn't do that :)

On Tue, Jul 28, 2015 at 10:15 PM, Mark J. Blair <nf6x at nf6x.net> wrote:

>
> > On Jul 28, 2015, at 22:13 , Chris Osborn <fozztexx at fozztexx.com> wrote:
> >
> > III supported four drives, two internal and two external, but they were
> on separate buses so it only had to select between two drives on each
> ribbon.
>
> Aha! I recently had reason to study the floppy signaling in the
> II/12/16/6000, and they also separated the drives into internal and
> external busses with separate buffering and MUXing.
>
>
> --
> Mark J. Blair, NF6X <nf6x at nf6x.net>
> http://www.nf6x.net/
>
>
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