Re: How many 5.25 inch floppies with the IIc support

["David Betz" <dbetz@xlisper.mv.com>]

"Mike" <mike@bogus.address.net> wrote in message
ubaf5dql0l15ea@corp.supernews.com">news:ubaf5dql0l15ea@corp.supernews.com...
> David Betz wrote:
>
> > Can I connect more than one external 5.25 inch floppy to a IIc? Can the
> > IIc support external 3.5 inch floppies? If so, how many?
>
> For the 5.25, just one external drive.

Thanks! I thought maybe it would support more than one because it looks like
the drives can be chained together. I guess that only works on the IIgs?

> Now, for the 3.5, that's a different story.  If you look on the bottom and
> your IIc says "Model A2S4100" you are in luck, and your IIc supports a
> UniDisk 3.5, for sure (among other things).  If it's A2S4000, maybe it
does:
>
> Turn on the IIc and hit control-reset after "Check Disk Drive" appears.
> Type the following
>
> ] CALL -151<enter>
> * FBBF<enter>
> FBBF- ??
> *
>
> Now, the ?? is key, here.  If it says anything but FF, you are in luck,
and
> your IIc supports a UniDisk 3.5.
>
> If it says FF, you are pretty much screwed unless you like soldering on
the
> inside of your IIc, and have a way of burning a new ROM chip.

I've got two Apple IIc's. One is a Model A2S4000 and it has FF stored at
FBBF. I guess I'm out of luck with that one. The other is a Model A2S4100
and it has 00 stored at FBBF. From what you said, that one should work with
a 3.5 inch drive. Unfortunately, the two 3.5 inch drives I have came with an
Apple IIgs and they are the "Apple 3.5" drives. I guess I'll have to keep
looking for a UniDisk 3.5 inch drive.

> Oh, and if you have an A2S4100 Apple IIc that says $FBBF = $04, I might
> want to talk to you about getting a copy of the ROM chip., since mine is a
> $03, and I want the terminal mode in the serial port to work.

Sorry. The best I've got is $00.

Anyway, thanks for your help.

David Betz
dbetz@xlisper.mv.com