Multitech ISI608PC El manual del propietario descargar pdf (Pagina 13)

2 - Hardware Installation

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

ISI608 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 ISI'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 ISI608 cards into your system. Each card

is shipped with its IRQ set at level 3 and a base I/O address of

200 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.

Table 2-1.

Recommended Base I/O Address and IRQ Values

ISI608 Card Base I/OAddress IRQ

Initial 8 port board 200h 3

First 8 port upgrade 210h 4

Second 8 port upgrade 220h 5

Third 8 port upgrade 230h 7

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

ISI card because IRQ2 is used for slave interrupt control.

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Multitech ISI608PC El manual del propietario Pagina 13