Re: Z80+ & CP/AM with IIgs RAM Disk

["Michael J. Mahon" <mjmahon@aol.com>]

On 9/17/2010 7:53 AM, Steven Hirsch wrote:
> On 09/17/2010 07:43 AM, KP wrote:
> > Still can't get this to work:
> >
> > I am running:
> >
> > IIgs ROM 01
> > 1 Meg Apple RAM Card
> > AE Z80+ in Slot 4 (mouse disabled)
> > CP/AM v5.1
> >
> > I have set the system speed to "Normal" (1 mHz).
> >
> > I boot CP/AM. It loads.
> >
> > I type "MEGDRIVE".
> >
> > It tells me: "MegDrive is installed as disk C: / Available storage
> > space is 54k"
> >
> > This happens consistently, regardless of whether I set a RAMDisk in
> > the IIgs Control Panel or not.
> >
> > Is there anything that I can do to make CP/AM set up a MegDrive with
> > more than 54k?
>
> Can anyone remind me how the IIGS presents memory above 64k to
> environments running in 6502 mode? I thought it looked like AUX memory,
> but now I'm wondering if that's correct.
>
> Just been too long since I've thought about this.

I'll be interested in the answer, too.

I thought it presented only one 64K "AUX" bank, like a IIc or
a //e with a 64K AUXMEM card.  That would explain the 54K
RAM disk.

It would have been nice to present all available memory as a
bank-switched AUXMEM card, but that wasn't an Apple standard.

-michael

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