Introduction - If you have any usage issues, please Google them yourself
About vb control I/O port, on-line few could be found in this upload a copy of my previous collection of source code, including the demo program
Packet : 21840261vb_io.zip filelist
PORT.FRM
PORT.FRX
PORTTEST.VBP
PORTTEST.vbw
README.TXT
VBIO32.DLL