[Coco] Need help (of course)

Gene Heskett gheskett at wdtv.com
Sat Dec 6 00:40:24 EST 2014


On Friday 05 December 2014 23:12:12 Al Hartman did opine
And Gene did reply:
> What is normally done on TRS-80 Disk drives is that you jumper DS0 and
> DS1 on every drive. Put the terminator in the Drive 0:, and remove it
> on all other drives.
> 
> Then, you remove the pins from the edge connector on the drive cable
> for the unused drive selects, causing each connector to select only
> one position with drive 0: being the furthest from the controller. You
> can have 4 single sided drives this way. If you want to use double
> sided drives on a Coco, I think you have to jumper ds3 to the side
> select pin with a wire in both drives, and you can only have two
> drives in DEB. OS-9 might let you have 3 double-sided drives, but
> someone else would have to tell you.
> 
> -[ Al ]-

Yes Al, been doing that for 20+ years.

Thanks Al.

Cheers, Gene Heskett
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