Re: IIgs Slot Scan Not Detecting Hard Drive

["Bill Garber" <willy46pa@comcast.net>]

"Andy McFadden" <fadden@fadden.com> wrote in message 
news:43c5439d$0$58043$742ec2ed@news.sonic.net...
> Tempest <tempest@atariprotos.com> wrote:
>> I've been told that if you use a real 5.25" disk controller that some
>> games like Karateka and Drol will work better.  I'm not sure about this
>> myself, but to me it would make sense that there might be some tiny
>> difference in the IIgs IWM controller and a real 5.25" disk controller
>> card that could break really picky compy protection scemes.  Then again
>> I could be completely wrong, I figured it couldn't hurt to stick the
>> card in there since that slot would normally have to be free for the
>> 5.25" IWM controller anyway.  I'll try removing it and seeing if that
>> fixes the problem.
>
> The $c600 code is different.  On the IIgs, if you use the smartport it'll
> time out and continue the slot scan.  If the boot loader expects the code
> at $c600 to work a particular way, because it calls into it or copies
> pieces of it, then the boot process will fail unless only "standard"
> entry points are used.


The Disk II controller does not time out at all.
If it could, then it would need to jump to SLOOP,
which would then look at the next slot. The IIgs
Slot 6 code does this. There is no space on the
256 Byte ROM on the Disk II card to add it.

Bill Garber