Hello everybody,
Through a recent shopping spree at Ebay, I managed to get a Quick
Data Drive. Good to the seller description, it came with the system
wafer and an empty one, which was quickly destroyed as I pull it from
the drive. Fortunately, I got another couple of empty wafers to cover
the loss.
I know these things didn't catch any attention in America (I got
mine from the UK), but I was wondering if by some kind of luck they
are available somewhere. I wont play a lot with it, as I have a 64HDD
setup to cover my backup needs, but it would be nice to have spare
wafers, just in case.
In the other hand, I made a snapshoot with an Action Replay
cartridge of the C64 with the QOS installed. I did this as I haven't
had too much time to study which vectors are modified to load the the
system.
QOS stands for Quick Operative System. It was the system
responsible of handling the Quick Data Drive. It even offered a wedge
to manipulate files on the wafers
The manual just says that the main program uses the memory from
$C000 up to $CFFF and the wedge from $A000 up to $AFFF, with the
memory from $B000 up to $BFFF used as a data buffer.
I can make this snapshoot available as a D64 file to anybody who
might want to study it. Just let me know and I will upload it.
Regards,
Rodolfo Leal
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