[Coco] Four floppy drives?

[David Gettle]

You misunderstood me, under DECB the 4 drives were accessed as SSDD, the
second side of the drives were not accessed. under OS-9 all 4 drives were
accessed as DSDD due to the OS-9 software access method, the entire drive
under OS-9 is accessible from 1 address line.

I'm primarily an OS-9/Nitros9 user

On Mon, Aug 3, 2015 at 12:25 AM, Barry Nelson <
barry.nelson at amobiledevice.com> wrote:

> I do not understand how the 4th drive could ever be accessed as double
> sided since the drive select line for the 4th drive is the same line that
> is used for side select unless you used some custom circuitry and device
> drivers like I did to get 8 drives working. There would be two problems.
> First, how would you select side two on the fourth drive? Secondly, any
> time you selected side 2 on any other drive, you would turn on and select
> drive 4 as well. Please explain. I'm not saying it can't be done, I got 8
> drives working, but I did it by building a cable with a custom drive select
> circuit, and rewriting the OS-9 floppy driver.
>
> On Aug 1, 2015, at 10:44 PM, coco-request at maltedmedia.com wrote:
>
> > Date: Sat, 1 Aug 2015 08:49:32 -0700
> > From: David Gettle <david17361 at gmail.com>
> > To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> > Subject: Re: [Coco] Four floppy drives?
> > Message-ID:
> >       <CABvSbETH1Y69cV4uy=_
> QmGsiZAnMGoGzC3o6G2At9fbCmFqR_A at mail.gmail.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > In DECB all 4 drives were formatted as SSDD, under OS-9 they were
> formatted
> > as DSDD
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>