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Getting rocked by my Supra modem

Posted on 1998-07-12
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Last Modified: 2013-12-27
     I have read some previous questions concerning the same problem, but haven't sucessfully installed the modem yet.   I have a Supra Express 56K internal V.90 voice modem with no physical jumpers on the modem card. (PCI)  I am currently using NT 4.0 w/ SP 1.  I am using a Baby AT board and I believe there are only two COM ports (1 & 2).  In my BIOS, the default IRQ and I/O base address for COM 1 is IRQ 4/3FxB (mouse is using COM 1), for COM 2 is IRQ3/2FxB.  There is also an option called "Interal Modem Use IRQ": which I don't know what value to set to.  
       My questions are  (Mouse is using COM 1 currently)
          1) Should I let NT automatically detect my modem?  Or should I use the "Have disk" option and installed the modem             driver for NT?  Everytime I installed using the "Have disk" option and used COM 2,  NT will say the modem is current             using COM 2 but is "Inactive"  and "Unavailable".
          2) What value should I set the "Modem use IRQ " in BIOS to? (I usually use 3)
                3) Should I enable or disable Com 2? When I disable serial port 2 in my BIOS, then COM 2 is gone in NT.
          4) I have installed PnpIsa , but didn't detect the modem
          5) (Serial Port 2 is Enabled) I have tried to remove all ports and reboot again, everytime I do that, only Com 2 is                   available, then I set the address to 2FxB and IRQ to 3 : the same settings on the BIOS for serial port 2 and let NT                   reboot.  Should I add more com ports such as 4 and 5?
          6)  I have used the NT Diagonistic tool and discovered that "Serial" is using IRQ 3 and 2FxB when the mouse is on COM
          1 and if I switched my mouse to COM 2, "Serial" will be using IRQ 4, 3FxB : the settings mouse was using.
   
      I have tried all these different methods, do they look reasonable and am I missing some critical steps?  

          Any help or advice would be wonderful!
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Question by:MemyselfandI
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by:MemyselfandI
ID: 1147064
Adjusted points to 80
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Otta earned 160 total points
ID: 1147065
> When I disable serial port 2 in my BIOS, then COM2 is gone in NT.

That is what you want to happen.

Go into BIOS setup, and disable the motherboard's COM2 port.
This "frees" up the COM2 port, so that the modem can "claim"
that it is 'COM2'.  Then, add the modem into NT.

> What value should I set the "Modem use IRQ" in BIOS to? (I usually use 3)

If you don't disable the motherboard's COM2,
then you should select COM4.  Then, IRQ3 can be "shared"
by the motherboard's COM2 and your modem's COM4,
and IRQ4 can be "shared" by the motherboard's COM1
and COM3 (since you don't have anything using COM3,
your mouse will be the only user of IRQ4).
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