Re: 1541LPT (2)

From: MagerValp (MagerValp_at_cling.gu.se)
Date: 2006-06-02 13:16:32

Ruud,
  I have been following your 1541LPT project with great interest. Have
you considered emulating the drive mechanism at a lower level? Instead
of redirecting the ROM calls, you could send a continuous stream of
GCR bytes from the PC, simulating a spinning disk. The PC would have
to listen for motor control (start/stop GCR stream), and stepper motor
(for track change). For a full emulation you'd need 8 bidirectional
lines, 2 inputs, and 6 outputs, but I think you could do a simple read
only interface with 8 outputs and 3 inputs. I'm not too familiar with
PC parallel ports, but I think it could be done with just wires and a
DB25.

-- 
    ___          .     .  .         .       . +  .         .      o   
  _|___|_   +   .  +     .     +         .  Per Olofsson, arkadspelare
    o-o    .      .     .   o         +          MagerValp@cling.gu.se
     -       +            +    .     http://www.cling.gu.se/~cl3polof/

       Message was sent through the cbm-hackers mailing list

Archive generated by hypermail pre-2.1.8.