[Coco] wierd stuff

[Robert Gault]

Depending on the disk controller you have, it may not work with a Coco3 
unless you use the MPI at the same time. The Coco3 does not have +-12v 
lines so the older controllers that need 12v won't work without an MPI. 
I'm not sure if a Coco2 has +-12v, the Coco1 does.

Also the contacts on devices and the Coco pack slot get oxide covered 
and that can cause problems. Try de-oxide solutions on the lands for 
best results.

Third, the drives need terminal resistors on the last drive in the set. 
You don't want multiple drives each with the load resistor pack installed.

Glen VanDenBiggelaar wrote:
> OK, so last night I has some weird stuff happen. I am now using a double 
> FD 500 setup, and I switched it from my CoCo2 to my CoCo3. At first, all 
> was fine, then after about 10 minutes, I started to get I/O errors. I 
> couldn't do anything with it and started to panic. I then hooked it back 
> up to my CoCo2 and was still getting I/O errors on both drives. I 
> switched out the controller to 3 separate ones and was still getting 
> errors. Originally, I had the Multi-pak set up on the CoCo2 and swapped 
> back the original controller and put the multi-pak back on and 
> everything worked just fine.
> 
> My question is why? is it because of the power drain from the second 
> drive, that it needs extra power? or is it because I am not using a fan, 
> and the drives are over heating?
> I know I SHOULD be using the multi-pak with the CoCo3 and a FD 500, but 
> why a CoCo2?
> or are my drives just flaky?
> -Glen
> 
> 
>