26 Feb
2002
26 Feb
'02
11:22 a.m.
On Feb 26, 8:50, Sellam Ismail wrote:
As Sellam implies, it's only the boot PROM (P5) you need to change, not the
state machine PROM (P6). I have a card somewhere with BOTH sets, switch
selectable, but I haven't seen it for a while.
The oher way to use the 13-sector disks is to make converted copies with
MUFFIN.
--
Pete Peter Turnbull
Network Manager
University of York
On Tue, 26 Feb 2002, Paul R. Santa-Maria wrote:
> I have received a box of old Apple II disks including a bunch of
13-sector
> disks. It would be quicker if I could directly
boot these disks
instead
of using
BOOT13 or the Basics disk. Does anyone here still have the
13-sector boot PROMs for the Disk II controller card? These are small
256-byte PROMs; can anyone here burn them if I cannot find originals?
I've been searching for years and I don't think I've ever even seen a
13-sector disk controller. Just about everybody updated their old
13-sector boot controller when the 16-sector version came out.
I think I may actually have the 13-sector boot PROMs but where they are I
wouldn't know.
Here's an idea: boot trace the BOOT13 disk and grab the code from it.
It's most likely just the old 13-sector disk controller PROM code.
Alternatively, if you have a copy of the original Apple disk/DOS manual
you'll find the 13-sector PROM code there. Take this code and burn it
into a PROM and swap it with the correct PROM on the 16-sector controller
and it should work.