Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!fluke!lal
From: lal@tc.fluke.COM (Larry Lohkamp)
Newsgroups: comp.sys.ibm.pc
Subject: Activating COM3 and COM4
Message-ID: <8036@fluke.COM>
Date: 2 May 89 15:27:15 GMT
Sender: news@tc.fluke.COM
Distribution: na
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Lines: 10

I have an I/O problem. I have an HP plotter, a micom line, an internal
modem, and a CTX port. I have been playing human switch box because my
IDS-286T came with 2 serial ports. I thought that I had a port for
everything when I instaled an AST premium memory board. The AST board
came with two ports at COM1: and COM2:. My serial board says that its
two ports can be used as COM1, 2, 3, or 4. I tried all possible 
combinations of assigning the two interrupts ( #3 and #4 ), but could not
get the machine to recognise anything but COM1 & 2. If it makes any
difference, my DOS rev. is 3.3. Can I get all 4 ports to work, or am I
dreaming the impossible?