???BIOS

1
???BIOS
????1 ??????? 2005/11/25
Last Modified 2005/11/25 Y.
Morikawa Original 2003/11/28
Y. Nakagami
2
??

• BIOS ??
• BIOS ???????
• BIOS ???
• BIOS ?????

3
BIOS (????)??

• Basic Input/Output System

1. ???????????????????????????
2. ??????????????????OS??????????????????

4
BIOS (????)??

• Basic Input/Output System

????????
????
OS
BIOS
?
?
??
??????
??????
5
BIOS (????)??

• ???????????????????
• BIOS ?????????

6
BIOS ???????
ROM (Read Only Memory)

• ???????? ROM ????????

• ?????????? ROM (????? ROM) ???????????????????

• ROM ?????????????

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BIOS ???

• ??????????
• ?????????????
• ???????????
• ????????
• OS ???
• ?????????/????

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?????????? (1)
BIOS???

• ????????????????????
• ???????
• ????????????? (PS/2??????????????) ?????

?????????
9
?????????? (2)
BIOS???

• ???????????????????? ???????? (Device Driver)
  ??????

OS
BIOS
???? ????
???? ????
???? ????
?????????
?????????
10
?????????????

• POST (Power on Self Test)
• ??????? IPL (Initial Program Loader)
• ? BIOS ROM ??? CPU ?????

• ??????????
• 2) ??????
• 3) ??????????????????????
• I/O????????IRQ, DMA?????
• 
  (?????????)

11
CPU?????HDD?CD-ROM?????????
?????????????????!(???????!!)
CPU Intel(R) Pentium(R) 4 CPU 2.80GHz Speed
2.80 GHz Press DEL to run Setup Press F8 for BBS
POPUP DDR Frequency 400 Mhz, Single-Channel or
Virtual Single Channel Checking NVRAM.. 256MB
OK Auto-Detecting Pri Master..IDE Hard
Disk Auto-Detecting Sec Master..ATAPI CD-ROM Pri
Master ST380011A 8.01 Ultra DMA
Mode-5, S.M.A.R.T. Capable and Sta Sec Master
HL-DT-ST DVDRAM GSA-4120B A102 Ulter
DMA Mode-2 Auto-detecting USB Mass Strage Devices
.. 00 USB mass storage devices found and
configured.
12
?????????
System Configration. AMIBIOS
Version08.00.10

Main
Processor(s) Intel(R) Pentium(R) 4 CPU 2.80 GHz


Math Processor Built-In
Base Memory Size 640KB
Floppy Drive A 1.44M, 3.5 in Extd
Memory Size 255MB Serial
Port(s) 3F8,2F8 Display Type
VGA/EGA Parallel Port(s)
378 BIOS Build Date 07/27/04
PS/2 Mouse Present
ACPI 1.0 Support Enabled

ATA(PI)
Device(s) Type Size LBA Block
SMART 32Bit DMA PIO
Mode Mode Info Mode
Mode Mode Primary Master Hard Disk
80.0GB LBA 16Sec Good Off UDMA5 4
Secondary Master ATAPI CD-ROM
UDMA2 4



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PCI??????/?????????


PCI
Devices
PCI Onboard PCI
Bridge PCI Onboard USB
Controller,IRQ5 PCI Onboard USB
Controller,IRQ5 PCI Onboard USB
Controller,IRQ11 PCI Onboard USB
Controller,IRQ5 PCI Onboard USB
Controller,IRQ5 PCI Onboard PCI
Bridge PCI Onboard Multimedia
device,IRQ5 PCI Onboard IDE
PCI Bridge Ethernet,IRQ5
PCI Slot-3 Ethernet,IRQ5
PCI Slot-5 VGA,IRQ11


?????????
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OS ???????(??)
????
BIOS (IPL) ???
???????
????????
15
?????????/????

• ?????????
• ???? (Plug) ?????????,?? (Play)?????,?????????????
  ???.
• NIC ? PCI ??
• ???????PCI ??
• USB ??

• ????
• - APM
• (Advanced Power Management)
• ????????????????????
• OS?????????????PC????????
• (??????????????)
• ???????BIOS?OS ??? ??????

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BIOS ???????????
BIOS???

• PC???????????
• ????????????????Del?????

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BIOS ?????????
BIOS???

• BIOS?????????

18
BIOS ?????IDE??
? ????????? Enter ????????????????????????
(??????????)
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IDE ????

• ?????????,????ID????????????

Primary master Primary slave Secondary
master Secondary slave
Secondary Primary
IDE ??? ??????????????????? 1 ?????2??HDD ??????.
20
?????????
BIOS???

• ????????????????
• FDD, HDD, CD-ROM ?

?????????????????!!
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???

• BIOS ???? ???OS (??????) ????? (??????)
  ?????????????
• BIOS ??????????? ROM ??????
• BIOS ??? OS ??????
• ??????????????????
• ??????????????
• OS ???
• BIOS ????????
• ????????????!!!

22
????
????.AT????BIOS. ??????,
ISBN4-87193-652-X ??BP???????,
????????????????, BP??????,
ISBN4-89100-383-9
23
I/O ???
??BIOS ????????????
CPU ???????????????????????
CPU??????????????????? ???????????????????
CPU
????
I/O ???
????
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IRQ (Interrupt ReQuest)
??BIOS ????????????
??????
????? (IRQ) ???? CPU ? ?????????????????? ???????
IRQ??????
CPU ????????????????????,IRQ?????????????????????
25
IRQ?????????
??BIOS ????????????
??????????
8
????????
0
CPU
(ACPI)
9
?????
1
10
(PIC?????)
2
11
COM2
3
PS/2???
12
COM1
4
?????????
13
5
IDE(Primary)
14
6
?????????
???
IDE(Secondary)
15
7
LPT1
26
DMA ?????
??BIOS ????????????
DMA ?????? ??????????? ?????????????
DMA ?? (Direct Memory Access) ????????? CPU
????????????? ?????, CPU ?????????????
DMA ??????
?????
CD-RW
I/O???
HDD
?????