Re: Apple /// Emulation disk - 60k?

[schmidtd <schmidtd@my-deja.com>]

On Mar 28, 7:26 am, demp...@actrix.gen.nz (David Empson) wrote:
> schmidtd <schmi...@my-deja.com> wrote:
> > Here's a friendly little auction... no idea if the link will work once
> > it's all said and done:
> >http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=200211189622
>
> > On the back side of these home-built disks (see the hole-punch notch?)
> > it purports to hold a 60k ][-emulation program.  For the ///, this
> > might be enough memory to boot a later ProDOS... or at least have more
> > than the stock 48k the normal emulation provided.  The seller says:
> > "Yes, it's an official Apple program, but it was a rare one. It just
> > reserves 60K instead of 48k of the Apple IIIs memory."
>
> > Has anyone else heard of such a thing?
>
> No. I don't have much direct experience with an Apple /// but everything
> I've ever seen about it says that the Apple ][ emulation mode has
> hardwired limits such as only having 48K of RAM, and there is no way to
> bypass this in software. The rest of the Apple /// RAM is simply
> unavailable.
>
> Besides, what is a "60K" Apple ][ supposed to be? A 48K Apple ][ with a
> 12K language card? That wouldn't work with anything that is expecting a
> 16K language card with two 4K banks in D000-DFFF.
>
> It might be referring to 48K RAM + 12K ROM (which is the absolutely
> standard 48K Apple ][ emulation mode).
>
> If this was an officially supported product from Apple then I would have
> expected to have heard about it, and seen mention of it in later
> editions of ProDOS. Everything after ProDOS 1.0.x dropped support for
> the Apple ///, because ProDOS 1.1 and later require 64K RAM (48K main
> plus 16K language card).
Ok, I found a disk in the Washington Apple Pi's /// library that looks
like the same thing:
http://adtpro.sourceforge.net/archive/WAP/html/a3emulation.html
Looking at the description of APPLE-3-WAP-EMM-03, it says:
"It will, under some circumstances, run Apple // software of up to
about 64K."
I guess 60k is "about" 64k. :-)  Anyway, it goes on to say:
"ProDos disks will not work.  For that, you will need the Titan ///+//
e cards..."
So it looks like I'm out of luck for ProDOS anyway.