MSI MS-6551 Instrukcja Obsługi Pobierz pdf (Strona 38)

Chapter 2

2-26

expansioncard to make any necessary hardware or software settings for the

expansion card, such as jumpers, switches or BIOS configuration.

CNR (Communication Network Riser)

The CNR slot allows you to insert the CNR expansion cards. CNR is a

specially designed network, audio, or modem riser card for ATX family

motherboards. Its main processing is done through software and controlled by

the motherboard’s chipset.

ISA Slot

The ISA slot allows you to install the ISA expansion card.

PCI Interrupt Request Routing

The IRQ, abbreviation of interrupt request line and pronounced I-R-Q,

are hardware lines over which devices can send interrupt signals to the

microprocessor. The PCI IRQ pins are typically connected to the PCI bus INT

A# ~ INT F# pins as follows:

Order 1 Order 2 Order 3 Order 4

PCI Slot 1 INT A# INT B# INT C# INT D#

PCI Slot 2 INT B# INT C# INT D# INT A#

PCI Slot 3 INT C# INT D# INT A# INT B#

PCI Slot 4 INT D# INT A# INT B# INT C#

PCI Slot 5 INT B# INT C# INT D# INT A#

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 66 67

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MSI MS-6551 Instrukcja Obsługi Strona 38