Sorry for the resend. I did not send the message properly before. I = hope it is properly sent now. I usually listen more than talk so I am = clumsy with the protocol. The question is repeated here. Does anyone know how to write a QBASIC command to transfer a byte or = multiple sequence of bytes to the parallel port of a PC, and also to = read a byte or multiple sequence of bytes from the parallel port? Also, = the same question applies to the serial port. I would appreciate any = information on this software question. Regards, Richard rgrazia1@rochester.rr.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body