Re: A new pseudo-disk for Apple 2.

["Alex Freed" <alexf@mirrow.com>]

"PZ" <skierpaul@yahoo.com> wrote in message
1153438866.636244.175200@h48g2000cwc.googlegroups.com">news:1153438866.636244.175200@h48g2000cwc.googlegroups.com...
>

> The SVD uses an external computer to load the images.  It would be very
> nice to have only one device (a card in a slot ideally) which you could
> copy or unpack images from the host Apple II and then play them.

I didn't try it, but it should be possible to use any normal copying program
to read a real floppy and write to an image on an MMC.

In theory my floppy emulation can be near perfect in a sense that
half-tracks and even
quarter tracks can be emulated. But more involved firmware is needed and a
new
format for nibbles that indicates half-tracks, 36 an 40 uS sync bytes etc.

I have deliberately used an oversized AVR chip in terms of memory space so
that a lot of firmware
can be added.
It also has 2 UARTS so it is easy to add a nice fast and buffered serial
port.

> Once
> again, the limitation is how to "flip" the floppies.  On a GS, perhaps
> this can be done through the Control Panel, however on a IIe a physical
> switch would be required.  As it was mentioned before, for multi sided
> games you'd have to be able to preload all of the sides.  (I think the
> latest Kings Quest was the largest with something like 12+ sides)

The only thing that bothers me is the physical construction with a switch
accessable
from the outside.

-Alex.