Abit IT5A Specifications download pdf (Page 41)

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Introduction to BIOS 3-11

SHADOW

What is a SHADOW? The BIOS of standard video or interface

cards is stored in ROM, and it is often very slow. With the

Shadow feature, the CPU reads the BIOS on the VGA card

and copies it into RAM. When the CPU runs this BIOS, the

operation is speeded up.

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 89 90

Table of Contents 4
Specifications 8
Layout diagram 10
System block diagram 11
1-6 Chapter 1 12
User friendly instructions 14
Standard External Connectors 16
MOUSE - PS/2 Mouse Connector 20
KB - PS/2 Keyboard Connector 20
Jumpers and Switches 21
Related terminology : 22
Pentium/with 24
2-14 Chapter 2 26
SW2 CPU Vcore settings 26
Installing the Mainboard 27
27
VIO VC6 VC7 VC8 27
Installing System Memory 28
DRAM Memory 28
2-18 Chapter 2 30
Standard CMOS Setup Menu 34
FDD supporting 3 Mode: 35
BIOS Features Setup Menu 36
CPU External Cache: 37
Quick power on self test: 37
Boot Sequence: 37
Swap Floppy Drive: 37
Security Option: 39
PCI /VGA Palette Snoop: 39
Delay IDE Initial: 39
OS Select For DRAM > 64MB: 39
Video BIOS Shadow: 39
Chipset Features Setup Menu 42
Power Management Setup Menu 44
Power Management: 45
PM Control by APM: 45
Modem Use IRQ: 45
Video Off Option: 45
Video Off Method: 46
IDE HDD Power Down: 46
Doze Mode: 46
Standby Mode: 46
Resume by Alarm : 47
PCI & Onboard I/O Setup 48
On board Serial Port 2: 50
On board Parallel Port: 50
On Board USB Controller : 50
On board IDE-1 Controller: 51
On board IDE-2 Controller: 51
Load BIOS Defaults 52
Load Setup Defaults 52
Password Setting 53
IDE HDD Auto Detection 54
Appendix A Quick Installation 55
Installing CD-ROM Drive: 56
Installing parallel port: 56
Installing serial port: 56
Installing Keylock connector: 56
Installing HDD LED connector: 56
Sleep LED connector: 57
Installing speaker connector: 57
Installing PS2 Mouse: 58
Adjusting other jumpers: 59
BIOS Setup: 59
Appendix B Intel Pentium CPUs 61
Pentium 133MHz 62
Pentium 166MHz 63
Pentium 200MHz 64
Pentium 233MHz 64
Appendix C AMD-K5 / K6 CPUs 65
MD - K6- PR100 66
66MHz 66
6x86MX-PR166 67
133 MHz 67
Appendix D 68
About HDD Installation 69
Appendix EE-8 76
Appendix F Flash BIOS User 77
Instructions 77
Please click “next” to go on 80
Appendix H 81
Appendix HH-2 82
I-1 83
Appendix I Technical Support 83
I-3 85
< IDE Device Driver 86
I-5 87
I-6 Appendix I 88
I-7 89
I-8 Appendix I 90

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Abit IT5A Specifications Page 41

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