[Coco] double disk drive

[Sylvain Rousseau]

You are right.

The poke table is shown on the Bob's web page.

Sylvain

At 09:48 2005-02-04, you wrote:


>You can change the drive select and side selects all through software. I
>did this many years ago. Modify the tables in DECB's ROM to do what you
>want them to do. I messed with side select but I'm pretty sure you can
>do the drive select as well. There was about 3-4 tables that the bits
>had to be massaged.
>
>Art F. could verify this for sure... Yes?????
>
>Depending on what type of controller you had then just select the
>correct DECB DOS and go. Under the SuperIDE with 4 flashable ROM DOS, a
>single poke, reset and you are running the selected DOS. Or just flip a
>switch and go......
>
>Mark
>
>
>Quoting George Ramsower <yahoo at dvdplayersonly.com>:
>
> > If I remember correctly (I did it )...about a thousand years ago..
> >
> > You wire the jumpers and make a wiring change on the FDC cable to
> > make the drive select to force the floppy drives to:
> >
> > Drive 0 was side A of drive 0
> > Drive 1 was side B of drive 0
> > Drive 2 was side A of drive 1
> > Drive 3 was side B of drive 1
> >
> > I saw this thread and had to inject something.. it rang a bell !!!
> >
> > I'll think on this and see if I can recall how this was done.
> >
> > George
> >   ----- Original Message -----
> >   From: David
> >   To: CoCoList for Color Computer Enthusiasts
> >   Sent: Thursday, February 03, 2005 7:16 PM
> >   Subject: Re: [Coco] double disk drive
> >
> >
> >   So if i get you correctly, the switch basically reverses which
> > drive is
> >   plugged in where?
> >
> >   David
> >   ----- Original Message -----
> >   From: "Bruce W. Calkins" <brucecalkins at bellsouth.net>
> >   To: "CoCoList for Color Computer Enthusiasts"
> > <coco at maltedmedia.com>
> >   Sent: Friday, February 04, 2005 11:58 AM
> >   Subject: Re: [Coco] double disk drive
> >
> >
> >   > Can you wire up a reversing switch?  You will need to have the
> > drive one
> >   > and
> >   > drive two lines from the controller go to the center terminals of
> > a double
> >   > pole double throw switch.  The lines from the drives will go to
> > one set of
> >   > outside terminals and then a pair of wires to cross over from
> > that outside
> >   > terminal pair to the opposite terminals.
> >   >
> >   > Bruce W.
> >   >
> >   >
> >   >
> >   >> Hello,
> >   >>
> >   >> I just upgrade my FD500 floppy drive.
> >   >>
> >   >> I add a 3 1/2" drive on it and I want to know how to add a
> > switch that
> >   >> let
> >   >> me select which of the 2 drives is the drive 0.
> >   >>
> >   >> Could you help me?
> >   >>
> >   >> Sylvain
> >   >
> >   >
> >   >
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Sylvain Rousseau, ing./P.Eng.
Comlab inc.
2300 Leon-Harmel, suite 220
Quebec (Quebec)
G1N 4L2
Tel   : 418-682-3380
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