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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!gatech!usenet.ins.cwru.edu!cleveland.Freenet.Edu!al919
- From: al919@cleveland.Freenet.Edu (Bruce Halco)
- Newsgroups: comp.os.os2.misc
- Subject: Make COM3 talk to COM4 -- Solved!
- Date: 6 Jan 1993 14:42:39 GMT
- Organization: Case Western Reserve University, Cleveland, Ohio (USA)
- Lines: 16
- Message-ID: <1ier4vINNqqg@usenet.INS.CWRU.Edu>
- NNTP-Posting-Host: hela.ins.cwru.edu
-
-
- I now have two DOS sessions communicating properly through two
- physical COM ports. The two step solution was 1) replace COM.SYS
- and VCOM.SYS with SIO.SYS and VSIO.SYS and 2) use IRQ2 for COM4
- instead of IRQ9.
-
- I had originally tried IRQ9, but COM.SYS rejected it. SIO.SYS
- prefers IRQ2 for some reason.
-
- The SIO.SYS and VSIO.SYS got from hobbes are version 0.11. I know
- there are later versions but I haven't located one yet. A side
- benefit is that throughput is MUCH better than with the original
- drivers. Maybe 2x at 9600 bps, although I didn't try to
- actually measure it.
-
- More black magic than I'd like, but at least it works.
-