PowerPoint 5
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2.
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3.
(Expansion Bus)VESAPCICPU
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10.
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2)
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3)
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11.
Pentium CPU0.35 Pentium CPU0.25 CPU0.18 CPU
Intel5-1
808640——()80865-2
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5.1 8086
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1.
(2) AD15AD0/16(T1)16(AD15AD0)(I/O)
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5-2 8086


(5) BHE/S7/S7()T116/8AD15AD8A0()TS7DMA
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2.
8086MN/MX(33#)/8086MN/MX+5 V80868086MN/MX808682888086(S2S1S0)82888288
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S2S1S0M/IODT/RDENM/IO/()CPU(M/IO=1)I/O(M/IO=0)DT/R/()CPU(DT/R=1)(DT/R=0)DEN()CPUI/O
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5-5 QS1QS0
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INTALOCKWRWR()8086 CPUI/OWR
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2) MN/MX()
(2) READY——()8086 CPU8086 CPUREADY=0()8086 CPUTREADY=1()8086 CPU
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(4) NMI——()NMI8086 CPU
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(6) RESET——()RESET8086 CPUFRIPCSFFFFH
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3.
(1) CLK——()8086 CPU13(=13)
(2) VCC——()(+5V±10)
(3) GND——
(2) 8086 CPUAD15AD0/8088 CPUAD7AD0A15A8168086808880888086
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5.2 8088
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5.3 8086
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1) 8284A
8284A8086(8088)/8086(8088)8284A5.48284A
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5.4 8284A
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2)
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3)
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2.
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5.5 8086
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1) 8288
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5-7 8288
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5.7 8288
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IOB/IOB=08288AENAEN()115 ns8288I/OI/OIOB=18288I/OI/O(IORCIOWCAIOWCINTA)AEN
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AENAEN=18288AEN=0AEN115 ns8288I/OAENI/O
CENCEN=1CEN=0DENPDEN82888288CEN
CLK8288CLK
ALE
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5.3 8086
1.
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T1CPUT(T2T3T4)T2T4T4
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2.
8086 CPU / I/O/ () /()
1)
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5.9 8086
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8086
(2) A19/S6A16/S3T1CPU4T2T4S6S3
(3) BHE/S7T1BHE(BHE)8BHE(A0)T2T4
(6)RDT2I/OI/ORD(ADl5AD0)
(8) DENT2T3
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2)
5.10 8086
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(2) WRT2T4I/OI/OWR
(3) DT/R
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3)
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5.11
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4)
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5.12 /
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5.13
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3.

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8288I/O MRDCMWTCAMWCIORCIOWCAIOWC2105.145.15S2S1S0T1T3()T3T4(S2=S1=S0=)
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5.14 8086()
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5.15 8086()
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3)
5.4.1
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(2)
(3)
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CPUDMA

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2)
(4) ACKRD
REQACKRDACKRDACKACK
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IBM-PCXTPCI/OI/OI/O62862J1J85.18
628(+5 V25 V1+12 V112 V13)82026
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5.18 PC
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1.
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3.
26
1) (21)
IRQ2IRQ7()
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T/C()DMAT/C
RESET DRV()
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3) (3)
CLK()OSC4.77 MHz(210 ns)33
CARDSLCTD()J8
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5.4.3 ISA
(2) SD8SD158
(4) PC/XTIRQ8IRQ15IRQ13AT(8259)IRQ2PC/XTIRQ2ATIRQ9IRQ0(8254)()
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(9) I/O CS161616“”
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ISA162416 MB8 MHz8 MB/s
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5.4.4 EISA
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(1) D31D161632
(2) LA31LA242432
(3) LA23LA16A23A16
(4) BE3BE0()324
(5) LOCK()
(16) MSBUSRT()
(Non-Burst Type)EISAMasterSlave2BCLK
Peek-Poke(Peek-Poke and Locked Exchange)CPUEISAI/O
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EISA33 MB/s324 GBEISAI/OCPUEISAPC
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5.4.5 VLPCI
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1. VL
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2. PCI
PCI
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(3) PCIBIOS(/)PCI
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(8) (ASIC)()PCIPCIISA/EISA
PCICPUPCI“”PCI(ISAEISA)“”PCIPCI
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5.21 PCI
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1)
(2) C/BE0C/BE3/PCIC/BE00C/BE0C/BE3
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2)
(3) ERDY(InitiatorReady)
(6) IDSEL(Initiatization Device Select)/
(7) LOCK
4) ()
8) Cache
(2) SDONE(Snoop Done)
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9) JTAG
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5.4.6 USB
USB(Universal Serial Bus)PC1995PCUSBPCUSB1997WIN95OSR2(WIN97)USB1998Windows 98USBUSBUSB
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1. USB
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2. USB
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3. USB
(2) USBUSB
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(4) USB(Hot Plug)USBPCUSBSCSI
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(7) USB
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1) (Control)
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2) (Isochronous)
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4) (Bulk)
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8. USB
1) USB
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2) USB
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3)
USB(Packet)(Packet ID)CRCPacket ID5-9
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5)
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9. USB
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5.2 IA-32
5.3 IA-32()
5.5
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5.8 80868086
5.9
5.10 PCISAEISA
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