Re: Adding a second floppy drive to an Apple IIe

[Jeff Shanholtz <jeffsubs@shanholtz.com>]

On May 5, 12:23 pm, Linards Ticmanis <ticma...@gmx.de> wrote:
> You're right, a speed issue wouldn't cause the other drive to fail. As I
> said the 74LS125 is still a possible villain. The failure mode you
> describe leads me to the assumption that the ULA 2003 might be more
> likely in this case though; its failure could cause one drive to hold
> the phase lines, so that the computer can't move the other drive's head
> any more. Also, your controller card might have a problem with two
> drives attached, or maybe your PSU might be failing and the two drives
> tax it too much (the latter isn't all that likely though).
>
> Do you maybe have another controller card, so that you can connect each
> drive to its own controller?
>
> Also try plugging in ONLY the supposedly bad drive, does it work then?

It doesn't work as the only drive in the system. Boot sound and then
spinning with no reading. So it sounds like one of the chips might be
the problem then. I appreciate the advice!