Re: Eject 3.5 disk?

[dempson@actrix.gen.nz (David Empson)]

Louis Cornelio <cornelio@crl.crl.com> wrote:

> : >I did find one to boot slot 6.
> 
> It works in a strange fashion. It reboots & that is fine for non-prodos
> disks, but otherwise I get msg "unable to load prodos" even when it is on
> the 5.25 drive.
> 
> I am rebooting from the finder on a GS 6.01 w/ a focus hard drive.
> Any ideas why it doesn't work w/ prodos disks??

If this program is bypassing the boot firmware and is directly loading
the boot sector, it might not be setting up the registers and zero page
locations correctly.  ProDOS is much fussier about this than DOS 3.3.

The obvious way to boot from a paritcular slot is to simulate the PR#n
command, or simply jump to the entry point ($C500 for slot 5).  This
works with almost any bootable device.

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