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VIKING COMPONENTS 33.6K/56K PC CARD USER’S GUIDE

Determining COM ports and IRQ settings (Continued)

If your computer has card and socket services software other than those listed,

consult your computer documentation for more information about card and

socket services.

Setting COM Ports and IRQs

Because COM ports share IRQs, there is the possibility of conflicts between the

modem and other serial devices. Follow these rules when setting your COM ports:

Most communication software follows the IRQ settings and I/O address setting as

shown below:

In most systems, COM 1 is usually not available for use with a PCMCIA Card. To find

out what COM ports are available on your computer, exit to DOS and type

C:\>MSD

In Microsoft Diagnostics, use your mouse to choose “COM Ports.”

The COM port with “N/A” is the first one that is available. If COM 1 & 2 are being used

by system, you may need to choose COM 3 and change the IRQ. Please refer to the

section “Checking and Changing COM port IRQs.”

Chapter 4

Other devices can use:

COM 2 & 4

COM 1 & 3

COM 2 & 4

COM 1 & 3

If the modem uses:

COM 1

COM 2

COM 3

COM 4

Port

COM 1:

COM 2:

COM 3:

COM 4:

I/O Address

3F8

2F8

3E8

2E8

IRQ

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Viking MAC OS Betriebsanweisung Seite 32