On Tue, 16 Sep 2008 20:17:36 +0200, Peter Stuge <[EMAIL PROTECTED]> wrote: > Joseph Smith wrote: >> > Joe, I remember you were interested in crazy hardware hacks. >> > Would designing a floppy->parallel port interface (or >> > floppy->serial) fit your bill? >> >> That would be a crazy hardware hack. I don't think it would be too >> dificult considering floppies are basicly serial devices. I'll do >> some research. > > These are the signals: > > http://hardwarebook.info/Internal_Diskdrive > > >> I think the hardest part would be a driver/software able to >> manipulate the floppy port for serial. > > Not so hard, it will just be bit-banging the signals. I would suggest > using 8 output signals, one strobe out and one ack in to increase the > transfer rate. > > The drawbacks are that timing and thus transfer speed will differ > with CPU speed and that it is relatively impractical to drive > communication like this. > > > I'd like to also nominate PS/2 for consideration, it already comes > with a serial transceiver (odd-8-1) and once the superio is > configured, writing one byte should need just a few io instructions. > > http://hardwarebook.info/Keyboard_%286_PC%2C_PS/2%29 > http://hardwarebook.info/AT_Keyboard/Mouse_protocol > and the PORTS file from > http://www.cs.cmu.edu/~ralf/files.html (search for K-P0060) > > 10-16.7 kHz it's kind of slow, but.. > > My vote is for PS/2 also. There's a data and a clk line, so simple. The question is, newer motherboards are not coming with PS/2 ports, only USB (especially BTX). So Carl-Daniel how many of those boards have PS/2? Here is my favorite site to find out what devices have what signals (and pin outs): http://pinouts.ru/
-- Thanks, Joseph Smith Set-Top-Linux www.settoplinux.org -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
