On Feb 26, 8:50, Sellam Ismail wrote:
> 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.
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
Received on Tue Feb 26 2002 - 19:22:53 GMT