Filter
Top Products
Chapter 2 - Hardware Installation
13
2.3 Determining Current System Settings
When you install a device into your computer, the processor must
have a means of routing information to and from the device and the
device must have a means of gaining the processor's attention.
These are called Input/Output (
I/O
) addresses and Interrupt
Requests
(IRQs
), respectively. The MultiModemISI card requires 16
I/O addresses and one IRQ value which are not used by any other
device in your system. When selecting a unique base I/O address,
be sure that the next address is also unused. To determine your
MultiModemISI's current settings, refer to Appendix A and B.
If you are certain that these settings are not already in use, continue
with the hardware configuration and installation. You can install up to
four MultiModemISI cards into your system. Each card is shipped
with its IRQ set at level 10 and a base I/O address of 210 hex.
Check your system’s device settings to see if these values can be
used. If the defaults are already in use, select a unique IRQ and I/O
address and record those values for the hardware and software
installation sections that follow.
Note: If you choose IRQ 3 or 4, you may have to disable a COM
device from your BIOS setup. Also, most 386 or higher compatible
computers will not be able to assign IRQ2 to the MultiModemISI card
because IRQ2 is used for slave interrupt control.