On 17/06/10 02:44, Keith wrote:
Now, I've got a Spartan-3E FPGA, and it basically
goes
disk->fifo->USB2SER converter. The converter does USB<->TTL voltages, up
to 3mbps. I run it at 2mbps reliably.
Hmm, that's an idea. Dump the data into a FIFO, then have an arbitration
state machine on the other side to give the PIC access to the RAM...
Only problem is that the parallel slave port doesn't (IIRC) have a BUSY
/ BUSAK / DTACK input, so you can't stop the SPP bus when the target
device (the FPGA) is busy...
A BUSRQ/BUSAK type system should be doable though.
I've tried several times to get involved. I'm
an old amiga guy, working
on similar floppy projects, and my emails to them have basically been
ignored.
Aye, I've tried to get in touch with them twice -- it's always "we'll
get back to you" or "we can't tell you".
I'm frustrated with them too. They tell us about
how great the
stuff they've made is --- and then don't let us download (heck, even a
binary) of the effort.
Even a version of CTA which produced "tagged" IPF files (tagged as in
"marked as not produced by the SPS") would be nice, even if it's just a
noddy proof-of-concept demo.
And then they say they are "preserving
software",
but it's completely inaccessible to the public. (even though you can
download on the pirate networks)
You mean the actual IPF files? That's probably more for copyright
reasons. I can't see any real problem making boot disc images for e.g.
the Heathkit H89, Acorn BBC, Osborne CP/M machines, etc. available as
the respective companies no longer exist.
I'll tip my hat to the one and only Team 17... Releasing their Amiga
games for free? Nice move.
I remain completely unimpressed until I see first hand
exactly what
they've "accomplished."
Mmm. Not releasing the IPF file format info is pretty inexcusable.
They've worked with the HxD guys to add IPF support to that, but they
don't seem overly keen to work with open-source teams outside of the UAE
developers (what few are left).
Also, I would pay good money to see a Kryoflux board imaging an MFM hard
drive. The DiscFerret has had that feature from the get-go :)
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/