Re: Superdrive Controller Problem

["Peter Watson" <paw77@N_O_hotmail_S_P_A_M.com>]

Well done on finding the answer yourself!

The problem occurs because software that "knows" that one of the slot 5
entry points is at $C50A ("of course it is a safe assumption - it's a ROM
address!" NOT!) fails with the SuperDrive card which has the self test entry
point at that address. Unfortunately there's a few programs that do it -
luckily there's not too many!

The good news is that programs that follow Apple's programming rule to
calculate the entry point address each time work just fine.
--
Peter Watson
-- Write to MSDOS disks on the Apple IIgs?
-- Impossible!  ;-)

"JP1" <jp1@aol.com> wrote in message
20030219173700.16097.00001232@mb-mo.aol.com">news:20030219173700.16097.00001232@mb-mo.aol.com...
> Solution!
>
> Turns out that the problem was that I've long used a patched version of
ProDOS
> on my HD startup volume.  The patch causes ProDOS to look first for a
bootable
> floppy disk, and if one isn't found, boot from the designated Boot slot.
>
> Ignoring the patched ProDOS file and using the unadulterated ACI one
causes the
> Superdrive and the controller card to be recognized as expected.  Not only
> that, but the PCT sees the superdrive as a 1.44MB floppy for read and
write
> operations.
>
> John P.