Abit PR5 Informations techniques télécharger pdf (Page 18)

DIMM Voltage Settings

The DIMM sockets support both 5-volt and 3.3-volt un-

buffered DRAM. The voltage setting for both DIMM

sockets is controlled by jumper JP11. The socket voltage

setting must match the voltage of the DRAM on any

DIMM modules you install. The jumper settings are

shown below.

DIMM Voltage Settings

Jumper JP11 sets the voltage sup-

plied to the DIMM sockets. FP & EDO

modules use the 5-Volt setting.

Default Setting

: 3-Volt.

JP11: DIMM Voltage

Pins 1-2 Pins 2-3

5-Volt DIMM Short NA

3-Volt DIMM NA Short [Default]

Note:

5-Volt = FP or EDO DRAM

3-Volt = 3.3-Volt Unbuffered DRAM

JP11

Jumper JP11 Location

Pin 1

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 96 97

FCC Information 1
Contents 3
Introduction 5
Manual Features 5
Sidebar Notes 5
Pointers 5
Section 1 5
Package Contents 6
Feature Summary 6
PR5 Mainboard Layout Key 8
AB–PR5 PCI Mainboard Layout 9
System Block Diagram 10
1 2 3 4 5 6 7 8 11
DIP 11
External Clock Settings 13
Important Note 13
Intel Pentium CPUs 14
Cyrix 6x86 CPUs 16
DRAM Installation 17
DIMM Voltage Settings 18
JP11: DIMM Voltage 18
Onboard Connectors 19
Drive Controller Connectors 19
I/O Port Connectors 20
Connector Summary 20
System Enclosure Connectors 22
Enclosure Connectors 22
Other Connectors 24
Power Input Connector 24
CPU Fan Power Connector 24
Other Onboard Connectors 25
PR5 Hardware Configuration 26
Related Terminology 26
CPU Settings 28
DS5 ISA Bus Clock Settings 29
System Memory Configuration 36
Important Note: 37
Double-sided Modules 37
Installing Memory Modules 40
Module Orientation 40
Installing SIMMs 40
Installing DIMMs 41
Level 2 Cache Options 42
IDE Activity LED Connector 47
Other Jumper Functions 49
JP3: Clear CMOS Memory 49
JP8: Flash ROM Type 50
JP8: Flash Chip Type 50
JP8: Flash Memory Chip Type 50
Technical Information 51
CPU Specifications 51
Section 4 51
Intel CPUs 52
Software Configuration 53
The BIOS CMOS Setup Utility 53
Section 3 53
Menu Commands 54
CMOS Memory Battery Support 55
Standard CMOS Setup 56
Date & Time 57
Large Hard Disk Modes 58
Floppy Disk Drives 58
Floppy 3Mode Support 59
Video Display Types 59
Error Handling 59
BIOS Features Setup 60
Virus Warning 61
CPU Internal Cache 61
External Cache 61
Quick Power On Self Test 62
Boot Sequence 62
Swap Floppy Drive 62
Boot Up Floppy Seek 62
Boot Up NumLock Status 62
OS Select For DRAM >64MB 64
Video BIOS Shadow 64
Shadowing Address Ranges 64
Chipset Features Setup 65
Auto Configuration 65
Memory Hole At 15M–16M 65
Power Management Setup 66
What Power Management Does 66
Power Management 67
PM Control By APM 67
Video Off Method 67
Video Off Option 68
Modem Use IRQ 68
Doze Mode 68
Standby Mode 68
Suspend Mode 68
HDD Power Down 69
Power Down & Resume Event 69
PCI & Onboard I/O Setup 70
PCI PnP BIOS Auto-Config 70
PCI IRQ Actived By 70
Available IRQ 70
PCI IDE Card 2nd Channel 71
PCI IDE Card IRQ Map To 71
PS/2 Mouse Function (IRQ12) 71
Onboard FDD Controller 72
Onboard IDE-1 Controller 72
Onboard IDE-2 Controller 72
IR Infrared Settings 73
Onboard Parallel Port 73
Parallel Port Mode 73
ECP Mode Use DMA 73
Load BIOS Defaults 74
Load Setup Defaults 75
Password Setting 76
75MHz Pentium 80
90MHz Pentium 80
100MHz Pentium 81
120MHz Pentium 82
133MHz Pentium 83
150MHz Pentium 84
166MHz Pentium 85
200MHz Pentium 85
AMD K5 CPUs 86
Cyrix CPUs 87
IDE Installation Guide 88
IDE Transfer Modes 88
Installing IDE Devices 89
IDE Cables 89
Example IDE Configurations 89
Example 1: One Hard Disk 90
Example 3: Two Hard Disks 91
Example 5: Three Hard Disks 92
BIOS Setup 94
IDE Hard Disk Formatting 94
Technical Support 95
Troubleshooting Guidelines 95
The Troubleshooting Form 96
Troubleshooting Form 97

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Abit PR5 Informations techniques Page 18

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