Computer Hardware User Manual

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2.1 ISI Card Installation
This chapter provides you with the procedures to
install the Multi-Tech ISI551PC card in your ISA or
EISA bus personal computer.
Hardware installation involves:
1) Opening your PC.
2) Setting card configuration (determining
I/O address DIP-Switch setting and IRQ
jumper setting).
3) Installing the card into the PC.
2.2 Determining Current System
Settings
When you install a serial 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 ISI551PC card requires eight 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 other
addresses are also unused. (For example, if you