[comp.windows.ms] Com Ports

jmerrill@jarthur.Claremont.EDU (Confusion Reigns) (08/02/90)

Setup:
	Zeos 386SX-16
	2 serial ports (1 9-pin, 1 25-pin) on ZATIO2 card.  Ports are
switchable 1/3 and 2/4 (Com3=3e8h, IRQ4; com4=2e8h, IRQ3)
	1 Everex Evercom 24 EV-940 internal modem, port selectable 1-4.
Same port addressing as the serial card, plus a jumper to shift the modem to
IRQ2 (IRQ9 on an AT).
	1 Microsoft Serial Mouse, 9-pin
	25-pin Serial cable running to Logical Connection (printer-sharing
device). 

Problem:
	How do I get all of this to function in harmony?  At the moment I
have the mouse on COM1 (it doesn't work on COM3), the cable on COM2, and the
modem on COM3.  If I go into Windows and start up Terminal (yes, I know.),
the mouse dies, and I have to reboot to bring it back.  I have put the
COM3Base=3e8h line in SYSTEM.INI, and tried switching between use of
COMIrqSharing=true and COM3Irq=9, depending on the jumper setting, but I
always get the same result.  If I switch port 2 to COM4, DOS decides that it
is actually COM3, and this SEEMS to cause some confusion; I'm not sure.  Its
effect is that when I try to print, both the printer and the mouse die.  I
didn't try this setup with the COMIrqSharing=true line, which may make the
difference, but I doubt it.

Any suggestions?

--
Jason Merrill				jmerrill@jarthur.claremont.edu