Ruud Baltissen wrote:
> How good is the emulation of the drives in VICE? What I'm thinking of is if
> it would be possible to sepparate this part to make an independant module of
In VICE the IEEE488 emulation is all around the parallel.c file that
contains
an IEEE488 state engine. In my parieee project I used this plus the
emulated
drives (i.e. the C implementation handling filesystem and d64 images)
from VICE,
and added a hardware interface for my hardware.
To add "true" drive emulation, i.e. have an emulated drive listen on the
state engine (as it is done in VICE), you have to cut out a considerably
larger
part.
Filesystem ------\
pardevice
D64 -------------/ \ /----------- hardware interface
| \ /
| parallel.c /
| state engine
| / \
true drive -----/ \------ ( PET/CBM-II/C64 emulation,
VICE only )
emulation
In this diagram I already have the state engine and anything above it.
The true drive emulation is the part you would want to cut out in
addition to that.
The computer emulation (PET/...) is here only to show how it is
connected
in VICE.
> it. In this case you can use it with a real C= computer. I even want to give
> up my own PC-Disk for this and you have someone to help you. But I will need
> some help because I'm not that good in C, maybe Roel can help me.
First step would be to just add a different hardware interface for
your hardware and postpone true drive emulation. This would at least
prove
that it works
Second step would be to cut the larger part out of VICE. But I guess
here you
would want more help from the (current) VICE team. I took the code from
0.15,
and now VICE is at 1.6, so some stuff in the filesystem/disk image
handling
has improved already.
Unfortunately I am still pretty much under water with work, so I cannot
help
much, sorry.
Andre
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