re pc parallel i o r jd all pc parallel ports that are compatable with the ibm standard r jd including the original ibm adaptor are bi directional not all parallel ports are bi directional without modification my experience with the standard old zenith parallel port in their original s proves that they had the input direction disactiviated by tieing them r w select line of the circuit to vcc to make it bi which i did i had to modify it by scraping off the trace and solder a jump to the proper location i thought that this was just lazy on the part of zenith they were not zenith bull group at that time rdd winqwk b unregistered evaluation copy kmail d w net hq hal k ann arbor mi us or hal bbs qwk to usenet gateway four v bis dial ins free usenet mail and newsgroups pcboard am uupcb kmail call or member of eff asp asad mb disk serving ann arbor since
