17 Sep
2007
17 Sep
'07
6:32 a.m.
woodelf wrote:
But I don't have the keyboard or even a Datasheet
on a keyboard
encoder chip. Offhand I guess that is TTL serial at some fixed
buad rate.
Ah. Well, in that case, I'd trace the matrix out and build up a circuit for
it, then figure out where on the 40-pin socket it leads and build up an
adapter to fit a microcontroller (probably an 8051 - that's probably what the
board was designed for, or its close relative the 8048) in there. After that
I'd cook up some keyboard scanning code and have a play.
It's a fair bit of work though...
--
Phil. | (\_/) This is Bunny. Copy and paste Bunny
classiccmp at philpem.me.uk | (='.'=) into your signature to help him gain
http://www.philpem.me.uk/ | (")_(") world domination.