29 Jul
2008
29 Jul
'08
4:24 p.m.
Philip Pemberton wrote:
Chuck Guzis wrote:
And I wish he would have told me before I started my external usb amiga
floppy drive controller a couple years ago. :)
Certainly, any interest in floppies has to be
marginal by now.
Well, I wish you'd told me that before I started building the disc
analyser :) FWIW, I'm getting perilously close to building a
prototype -- the FPGAs
are here,
While I haven't dug into the past posts to see what exactly you are
doing, I use a Parallax uC for my solution to create .ADF (amiga
emulator files) from amiga formatted disks w/ a standard pc drive.
Analyser-wise, I've just got the write controller
state machine to pass
the testbench in Quartus -- it's spitting out a few dire warnings and
the data separator / sync word detector needs a few bugs killing.
My blog has considerable detail (although spread out) about how I go
about syncing to the data stream -- first at the
bit-level(pulses/transitions) and then at the byte level(to the sync word)
I'd encourage you to check my blog --- everything is ad-free and open
source --- though it needs better organization..........
http://www.techtravels.org/amiga/amigablog
high-level overview
http://www.techtravels.org/amiga/amiga.html
Schematic
http://www.techtravels.org/AFPschematic.gif
Pictures
http://www.techtravels.org/amiga/amigablog/?p=139
Hope this helps
Keith
