[Coco] PC-to-CoCo floppy drive cable

[theother_bob]

On 11/12/08, Roger Taylor wrote:

> Anyway, I'm trying (yet again) to wire a PC 3.5" drive (hard-wired as
> Drive 1) to be seen as Drive 0 on the CoCo.  The drive currently is
> seen as Drive 1 and works good.  I'm using a cable I apparently
> hacked in the past but later I lined the ribbon wires back up
> normally and crimped it back to work with normal CoCo floppy
> drives.  I know I need to swap or twist a few of the ribbon wires,
> but I have no clue which ones they are now.

--

Roger,

The cable attached to my 3.5 drive (which is hardwired as Drive 1) has
wires 10 - 12 twisted. This swaps only the Drive Select 0 and Drive
Select 1 lines so that it will respond as Drive 0.

Darren

--

I have long used and loved having a toggle switch on my drives. 
I wired a DPDT switch to swap lines 10 and 12. You can now use
either drive as D0 without custom boot disks or whatever.
I also use a Side Select toggle switch with Basic.

Bob