On 04/20/2011 08:08 AM, marco oriani wrote:
On 2011-04-20 13:39:55 +0200, Steven Hirsch said:
On 04/20/2011 06:40 AM, marco oriani wrote:
Are there any experts or owners of the profile HD system by Apple around
here?
I don't know if I'd call myself an expert, but I have a couple of them in
both functional and doorstop variety. What information are you after?
how do you place as a doorstop? have you build custom rubber feets? :)
well I have an I/O error on it during high-level formatting. Is there any
repair guide available of some sort? I got the user manual but it doesn't help
me, it says that nothing should go wrong....
There is a (rather large) scan of the Apple ProFile technical manual floating
around. Way too big for an attachment, but if you have an ftp or web site that
can tolerate a 43MB upload I'll be glad to send it.
The stepper motor indexing tends to wander over the years and a low-level
format will often fix the issue. That's the good news. The bad news is that
low-level formatting requires an Apple III with ProFile interface and a
special version of the Z8 MPU on the ProFile internal controller board. Just
went through this while restoring a Lisa 2/5.
It's a 10 MB version running on an apple II, with prodos 1.1. I don't have the
original floppy disks.
Did it ever work properly on that machine? Is it possible that you have an
interface card with the 5MB ROM on it? One not so robust way to tell is by
looking for the apple copyright notice in the expansion rom. The 5M has a
copyright date of 1982 and the 10M is 1984. That's based on my images and
other dates could have been used.
I have an Apple part number for the 5M ROM of 341-0080-B. But again, 5M ROMs
may exist with other numbers.