[Coco] Disk drive question

[Robert Gault]

Patrick Wilson wrote:
> I have a question for you gentlemen.  I started work on this some time ago and lost my momentum when i had to attack a project.  Here is the deal.  I have a number of CoCo 2 and 3, and one of the FD-501 sets.   I am trying to hook up a 3.5 along with the 5.25 but cannot get the drives to work properly.  I think i am safe in assuming i am doing SOMETHING wrong, but have no idea what at this point.  It appears that the drives are experiencing addressing conflicts.  But as i said, i am not sure.  You gentlemen have obviously overcome this sort of problem so i was wondering if you could profer some advice to help me get my issue corrected.   Any suggestions are welcome.
>
> Thanks,
>
> Pat

PC drives, actually the ribbon cable, flip address lines and the Coco does not. 
That means unless a 3.5" drive has a drive select setting switch, you need to 
use it as drive#1 rather than drive#0.
If you want to use a non-adjustable 3.5" drive as drive#0 on a Coco, you must 
cross connect the 0 & 1 address lines in the ribbon cable or use some other 
equivalent technique.