Fujitsu D1521 PCI bus interrupts Selecting correct PCI slot, Monofunctional expansions cards

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Add-on modules / Upgrading

PCI bus interrupts - Selecting correct PCI slot

To achieve optimum stability, performance and compatibility, avoid the multiple use of i ISA IRQs or PCI IRQ Lines (IRQ sharing). Should IRQ sharing be unavoidable, then all

involved devices and their drivers must support IRQ sharing.

PCI IRQ Lines connect AGP slots, PCI slots and onboard components to the interrupt controller. PCI IRQ Lines are permanently wired on the mainboard.

Which ISA IRQs are assigned to the PCI IRQ Lines is normally automatically specified by the BIOS (see description in "BIOS Setup").

Monofunctional expansions cards:

Standard AGP and PCI expansion cards require a maximum of one interrupt, which is called the PCI interrupt INT A. Expansion cards that do not require an interrupt can be installed in any desired slot.

Multifunctional expansion cards or expansion cards with integrated PCI-PCI bridge:

These expansion cards require up to four PCI interrupts: INT A, INT B, INT C, INT D. How many and which of these interrupts are used is specified in the documentation provided with the card.

The assignment of the PCI interrupts to the PCI IRQ Lines is shown in the following table:

Onboard controller

PCI INT

 

USB 1,1

 

 

 

AC97

 

 

 

PCI slot

 

LINE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1st

2nd

3rd

USB

SMB

Audio

Modem

LAN

AGP

1

2

3

 

 

 

 

 

 

 

 

 

 

2,0

us

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

(A)

 

 

A

-

-

-

-

-

-

-

A

-

-

-

 

 

2

(B)

 

-

-

-

-

A

A

A

-

B

A

-

-

3

(C)

 

-

-

A

-

-

-

-

-

-

B

A

-

4

(D)

 

-

A

-

-

-

-

-

-

-

C

B

A

5

(E)

 

-

-

-

-

-

-

-

A

-

D

C

B

6

(F)

 

-

-

-

-

-

-

-

-

-

-

D

C

7

(G)

 

-

-

-

-

-

-

-

-

-

-

-

D

8

(H)

 

 

 

-

-

-

A

-

-

-

-

-

-

-

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Use the first PCI slots that have a single PCI IRQ Line (no IRQ sharing). If you must use another PCI slot with IRQ sharing, check whether the expansion card properly supports IRQ sharing with the other devices on this PCI IRQ Line. The drivers of all cards and components on this PCI IRQ Line must also support IRQ sharing.

20 - English

A26361-D1522-Z120-3-6319

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Contents Answers2 Sie haben Page A26361-D1522-Z120-1-6319 Ausgabe Januar 2003 January 2003 edition Mainboard D1522 / D1521Page Page Bedienfeld / Front panel Externe Anschlüsse / External connectorsPage Contents Page Further information Notational conventionsInformation about boards Important notesOnboard features List of featuresInternal ports External ports Special technical features special featuresThermal Management and System Monitoring Recovery Bios Logo Boot DeskView / DeskViewOEMPrior to installation Brief instructions on installing mainboardInstallation Driver installation LAN connector Interfaces and connectorsExternal ports Graphics port Supported screen resolutions Internal ports and connectorsHard disk connection Front panel Pin assignment of internal portsPower supply ATX Power On LEDPower control system monitoring Fan LCD status indicatorIntrusion USB C/D / E/F dual channelAudio S/PDIF 2-pin CD-ROM audio Processor power supplyAudio S/PDIF 3-pin Audio front panelReserved switch 3 and switch Settings with switches and jumpersSkipping system and Bios Setup password switch 1 / pinpair Recovering System Bios switch 2 / pinpairAdd-on modules / Upgrading Installing and removing processorsInstalling the processor with heat sink and fan Technical dataMounting heat sink Upgrading main memory Installing a memory moduleAdding PCI cards Upgrading AGP screen controllersRemoving a memory module Monofunctional expansions cards PCI bus interrupts Selecting correct PCI slotReplacing lithium battery When should a Bios update be carried out? Bios updateBios update under Windows with DeskFlash utility Microcode Update Bios Recovery Recovering System BiosWhat is a microcode update? Drivers When should a microcode update be carried out?Mainboard current requirement AnnexElectrical Properties Loadability for connections and fusesLED APM and Acpi system status, energy-saving modesBios version Mainboard Revision and Bios VersionMainboard Revision level FlashbioË/p6 Ú Error messagesCheck that the keyboard is connected properly Missing or invalid Nvram token DOS error messages SmartCard reader error messages Glossary

D1522, D1521 specifications

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In summary, Fujitsu's D1521 and D1522 motherboards are feature-rich solutions that cater to the demanding needs of modern computing. Their powerful processors, expandability, and high-performance storage and memory options make them suitable for a variety of enterprise applications, solidifying Fujitsu's reputation as a leader in innovative technology solutions.