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

[KP <kjpmail@gmail.com>]

On Sep 17, 5:48 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
> 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
>
> NadaNet 3.1 for Apple II parallel computing!
> Home page:  http://home.comcast.net/~mjmahon/
>
> "The wastebasket is our most important design
> tool--and it's seriously underused."

Two follow-up questions:

1) Can anyone confirm the above response?

2) Does this mean that if I (talking strictly theory now--my current
setup is with a 1 Meg card) used a RAMFactor card in the IIgs and a 4
Meg RAM-GS card (the imitation knockoff of the AE card) in the same
IIgs, CP/AM v5.1 would be able to access the 1 Meg of RAMFactor RAM
but NOT any of the 4 Meg of RAM-GS RAM?