Acer ALTOS 9000V User Manual

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System Board

1.1 Features

The M9A is a dual-processor system board that supports the Intel P54C and P55C CPUs. The board contains an exc lusiv e slot for the CPU board that carries the 321-pin zero-insertion force (ZIF) CPU sockets plus the embedded 512-KB pipeline burst second-level cache.

This high-perf orm ance 64-bi t system board utilizes both the EISA and the PCI loc al bus architecture. Two EISA, four PCI bus slots, and one EISA/PCI shared slot reside on the board to allow installati on of either master or slave devices.

The system board has four DRAM banks composed of eight 72-pin SIMM sockets that accommodate both fast-page mode and EDO (extended dat a output) SIMMs. The sockets support a tot al of 512MB system memory using 64-MB SIMMs.

A 50-pin Fast SCSI-II interface and a 68-pin Wide SCSI interface come with the system board to connect SCSI devices. Standard external I/O interfaces include two 9-pin serial ports, one par all el port , a video port, and keyboar d and mouse ports.

The system board supports two optional features that allow better server management, the ASM Pro and the remote diagnostic management (RDM). The ASM Pro detects system problems, such as CPU thermal condi tion, 5V/ 3.3V detecti on, and PCI bus utilization calculat ion. The RDM all ows execution of a diagnosti c program f rom a remote stat ion to f ix the detected problems or to reboot t he system.

System Board 1-1

1.2 Major Components

The system board has the following major components:

•

Four DRAM banks com posed of eight 72-pi n SIMM sockets that support single- and doubl e- densi ty 60 ns SIMMs

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CPU board slot

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Four PCI, two EISA bus slots, and one EISA /PCI shared slot

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256-KB Flash ROM for system BIOS

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System clock/calendar plus 8 KB extended CMOS RAM with battery backup

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50-pin Fast SCSI-II and 68-pin W ide SCSI i nterfaces

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Two 24-pin RDM int er faces

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IDE hard disk and di sket te drive inter faces

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Onboard VRAM and VRAM sockets for video memory upgrade

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Power connector f or 350- watt or 420- watt switc hing power supply

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Super I/O, SCSI, VGA, memory, and Advanced Server Management (ASM) control ler chipsets

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External ports:

• Two 9-pin serial por ts

• PS/2-compatibl e k ey boar d por t (optional AT-keyboard por t)

• PS/2-compatibl e mouse port

• Parallel port

• Video port

1-2 User’s Guide

1.3 Layout

Figure 1-1 shows the system board components.

1 COM1 2 COM2 3 Mouse port 4 Keyboard port 5 Video port 6 Parallel port 7 Video upgrade sockets 8 CPU board slot 9 PCI slots 10 EISA slots 11 Real-time clock 12 Flash ROM BIOS

13 Buzzer 14 Narrow SCSI connector 15 W ide SCSI connector 16 SIMM sockets 17 Fan connector 1 ( FA1) 18 Fan connector 2 ( FA2) 19 Fan connector 3 ( FA3) 20 420W 5V standby power connector 21 Power connect or 22 Power connect or 23 Video RAM 24 RDM connectors

Figure 1-1 System Board Layout

System Board 1-3

1.4 Jumpers and Connectors

1.4.1 Jumper and Connector Locations

Figure 1-2 shows the jum per and connector l ocations on t he system board.

Figure 1-2 System Board Jumper and Connector Locations

Jumpers are prefixed “JP”. Connectors are prefixed “CN” and “SW.

The blackened pin of a jumper r epr es ents pin 1.

1-4 User’s Guide

1.4.2 Jumper Settings

Table 1-1 lists the system board jumpers with their corresponding settings and func tions.

Table 1-1 System Board Jumper Settings

Jumper Setting Function

Password Security

JP1 1-2

BIOS Type

JP2 1-2*

SCSI Termi n ation

JP3 1-2

SCSI Selection

JP4 1-2*

Hardware Reset

JP5 1-2

Sound Feature

JP6 1-2*

SCSI Feature

JP7 1-2*

VGA Feature

JP8 1-2*

2-3

2-3*

2-3

2-3* 3-4

2-3

Check password Bypass password

Acer OEM

Terminator al ways set to ON Use SCSI Setup Utility to set terminator to ON or OFF

Wide SCSI Standard

Software shutdown enabled Hardware reset enabled Hardware reset button connector

Buzzer Speaker

Enabled Disabled

Default setting

System Board 1-5

1.4.3 Connector Functions

Table 1-2 l ists the dif f erent c onnectors on the system board and their respective func tions.

Table 1-2 Connector Func tions

Connector Function

CN1 Power connector CN2 Power connector CN3 Backplane board HDD stat us c onnector CN5 IDE hard disk connector CN6 RDM connector CN7 RDM connector

CN8 Diskette drive connector CN11 68-pin Wide SCSI connector CN12 50-pin Fast SCSI-II connector CN13 RDM cable and LED board connector CN14 Hard disk LED connector CN15 Power LED connector CN16 Speaker connector CN17 420W 5V standby power connector CN18 200W 5V standby power connector

SW1 NMI switch

1-6 User’s Guide

+ 14 hidden pages