you need to setup your pc in ecp mode first,and if you running in windows base you'll need a control link program to access the lpt1: address, after that you may use pin 2 -- pin 9 of printer port as bus
pin 1,14,16,17 as anoher data bit and
pin 15,13,12,10,11 as data input bit
go to Google and search for ieee1284 and/or printer port will get what you're looking for
have fun
chris