On 26 Feb 2007 at 9:30, Kevin Handy wrote:
Could his problem be with the fact that all modern
drives are hard-set as the 'B' drive, and his machine is
looking for an "A" drive? I remember seeing some "PC like"
machines that were not wired for 'B'.
...and there were some old controllers that could support up to 4
drives on the same cable (e.g. DTC) with the right jumpering and
cable. If the 3.5" drive is hard-set for DS1, one can either
change that on the drive PCB ("hard select is usually done with a 0-
ohm resistor and can be changed) or the cable can be changed
(easiest). When it comes to playing with 3.5" drives on older
machines, I have a cable adapter PCB that brings the most common
changes out onto separate jumpers so I can tinker with them without
having to rejumper the drive.
Since I've never played with a PC5, it's hard to say what's going on.
Fred's idea of seeing if the LED comes on is good. I'd add that one
should also check to see if the spindle's also turning.