Subject: Re: 2E - 3.5" drive question
Newsgroups: comp.sys.apple2
From: dempson@actrix.gen.nz (David Empson)
Date: Tue, 28 Dec 1999 21:56:18 +1300
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phoenyx <quazar@dcnet2000.com> wrote:

> Supertimer wrote:
> 
> > How so?  When I ran my DuoDisk with a UDC card back in my
> > IIe days, the UDC would let me run Apple UCSD Pascal, which
> > was pretty hard coded for 5.25 drives.
> 
> Not quite, the Apple Pascal system was hard coded for slots more
> than for drives. As long as you had a bootable drive in the right
> slots, 5 or 6, it ran fine.

It depends which version of Apple Pascal you are talking about.

Apple Pascal 1.3 added support for booting from devices other than a
5.25" drive (and built-in support for using the ProDOS block driver in
other interface cards).

Earlier versions only support a 5.25" drive for booting, but a driver
can be loaded during boot to allow data-only access to other drive
types.

All versions require disk controllers (for the built-in driver) to be in
slots 4, 5 or 6.  Loaded drivers may be able to support other slots for
data-only access.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P O Box 27-103, Wellington, New Zealand