Either use VB and its serial control, or use the standard Win32 API for serial ports. Bob Ammerman RAm Systems (contract development of high performance, high function, low-level software) ----- Original Message ----- From: "sam woolf" To: Sent: Wednesday, May 30, 2001 4:24 PM Subject: [EE]:controlling serial port from windows NT Hi, Have made a little PIC thing that communicates with a computer through the serial port. This works fine with windows 95 but doesn't transfer to NT because NT does not allow use of the _inp() and _outp() functions. What can be done that doesn't require either brains or money? Sam. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body