Re: Adding a second floppy drive to an Apple IIe

[Michael J. Mahon <mjmahon@aol.com>]

Jeff Shanholtz <jeffsubs@shanholtz.com> wrote:
> I haven't had a chance to open it up yet, but I was going to try the
> copy ii+ speed check and with my working drive as drive 1 and this non-
> working one as drive 2, drive 1 won't boot. It gives the standard boot
> sound, but then just spins with none of the sound associated with
> reading the disk. Drive 2 is preventing drive 1 from working, but if I
> unplug drive 2, then drive 1 works fine. I also confirmed that the
> disk is NOT being messed up by trying to boot it in this non-working
> drive, so I suppose that means the logic chip isn't blown.

Not necessarily--the chip can fail in ways that don't result in disk
erasure. 

> Out of spec drive speed wouldn't prevent the other drive from booting,
> right? I wouldn't think any of the mentioned mechanical problems would
> cause that. What would prevent the other drive from booting while also
> not being stuck in write mode due to a bad 74125?

A failure in the read signal buffer or even the cable. 

-michael  -  NadaNet 3.1:  http://home.comcast.net/~mjmahon