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

[dempson@actrix.gen.nz (David Empson)]

schmidtd <schmidtd@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).

-- 
David Empson
dempson@actrix.gen.nz