Has anybody had any luck programming the ST78C34 PC Parallel port chip using our Parallel Port S-100 board (described here):
http://www.s100computers.com/My%20System%20Pages/Parallel%20Ports%20IO%20Board/Parallel%20Ports%20IO%20Board.htm
I can get it to output bit values to the base port. I can read the status, command registers etc. but I cannot figure the order of things to get the chip to pulse the strobe line.
The chip is described here:-
http://www.s100computers.com/My%20System%20Pages/Parallel%20Ports%20IO%20Board/ST78C34%20Printer%20Port%20Chip.pdf
John