Jos Dreesen / Marian Capel wrote:
Since this list has a number of people that are very
knowledgable on the
Am i correct in thinking that, given a custom FDC, i could run a modern
1.44 floppy in FM mode, and at much lower data rates i.e. (say 50 KHz.) ?
Background : I am musing on how to give a small amount of storage, say
around 100kb, to a very small low tech cpu.
I do not care about speed and efficiency.
I am aware that IDE-based solutions are simpler, both hard- and software
wise, but I would prefer a floppy based solution.
Have you concidered MMC? It's only 4 wires and you can make a 3.3v
supply from 5v using a LDO and 2 caps. There's a bunch of pic and z80
examples on the web and block i/o is really simple.
I don't think you can beat it for simplicity and since the media is
socketed you can read it on any other machine with a usb adapter.
I was able to do dos file i/o on a pic 18f...
(and I bet you could easily do MMC using a pc parallel port - you'd just
have to buffer the 5v signals since the mmc is 3.3v. a fun project!)