[Coco] CoCo Disk Drives

[Al Hartman]

26-3029 is the Catalog number for the controller, not the drive. But, if the 
drive came with the controller it should be drive 0 and at the end of the 
cable. A 26-1164 is ALSO a drive zero, but can be other drives based on what 
connector it's plugged into.

Are you sure you have a pulled pin cable?

Or have you gone into the drives and manually set the drive selects?

Also, check that only ONE drive, the one at the end of the cable -- has a 
termination resistor. Two of them on the cable could be the cause of some 
strange problems and errors.

And, yes -- you can use drives meant for the TRS-80 I/III/4 with the Coco, 
they work fine.

-[ Al ]-

-----Original Message----- 
From: Rick Thornquist

Since you guys were so great answering my previous question, I have another
for you.

When I acquired my CoCo 3, I got a 26-3029 controller and two disk drives,
a 26-3029 and a 26-1164.  I didn't get any manuals, so I just connected
them up in what looked to be the right way.  I have the 26-3029 connected
to the middle of the floppy cable (as drive 0), and the 26-1164 connected
to the end of the cable (as drive 1).  The setup does work for the most
part, but there is some flakiness, mainly with the 26-1164.

My question: Is there some configuration, like with drive select dip
switches or terminators, that I'm supposed to do?  Also, my Internet
digging suggests that the 26-1164 is a TRS-80 disk drive - is it also
supposed to work with the CoCo?  .

Thanks!

- Rick