Re: Unknown Apple II board: "FLY BD"

["Ron Kneusel" <oneelkruns@hotmail.com>]

Michael J. Mahon wrote:
> This is the $Csxx space, the slot entry point.  It initializes the
> slot screen holes and the 6522 (for output on port A, and one input
> on port B).  It also detects a CTL-I input, which signals a printer
> setup sequence.

I'm not really interested in a printer driver but how difficult it
would be to use this card to control other things, probably starting
with simple LEDs on/off.  I suppose it is time to dig out the old "6502
Software Design" book!

Ron