The new trend in PC/AT architecture

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The new trend in PC/AT architecture
???? suzuki_at_nisoc.or.jp
Dec.11 1999
2
???????

• PCI bus (32bit/33MHz)?????
• VideoAGP bus
• ?????PCI
• ISA bus/device??????
• performance (16bit / 8MHz)
• user interface

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PC99 System Design Guide (Microsoft/Intel1998)

• http//www.intel.co.jp/design/desguide/
• Power management(ACPI / OnNow)
• Multimedia devices
• Legacy device free
• ISA slot / device??????
• ????????USB/CardBus???

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Server I/O Solution

• bus ?? switch?
• Profusion(crossbar sw. for 8cpu)
• PCI?2.2?maintenance phase
• NGIO(Intel)
• PCI-X(IBM,Compaq,HP 66-133MHz)
• Future I/O(I,C,H,Adaptec)

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Intel new chip set

• i820(i810,i840)
• Accelerated Hub Architecture
• RDRAM(1.6GB/sec/ch. max.4ch.6.4GB/sec)
• Without PCI to ISA bridge (-gtLPC)
• Ultra ATA/66
• AGP 4X mode

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Accelerated Hub Architecture

• MCH(Memory Control Hub lt-gt North Bridge)
• ICH(I/O Control Hub lt-gt South Bridge)
• FWH(Firmware Hub lt-gt BIOS) w.RNG
• MTH(Memory Translator Hub support for SDRAM)
• MRH(Memory Repeater Hub)
• LPC(Low Pin Count / 4bit/33MHz serial bus )

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New PentiumIIICoppermine

• 256KB full speed on-die cache
• Klamath,Deschutes,Katmai(PII,III)512KB half
  speed backside cache
• Mendocino(Celeron)128KB full speed on-die cache
• 0.18 micron process (1.6-1.65V)
• Slot1 and new FC-PGA package(socket 370)

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AMDAthlon

• EV6 bus (Alpha chip)
• Point to point architecture (vs. Shared bus
  architecture)
• 128KB(6464KB) L1 cache
• 512KB backside cache (half speed)
• PC100 SDRAM

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Video

• AGP 4X mode
• Geometry acceleration (DirectX7)
• GeForce256/Quadro(nVIDIA),Savage2000(S3)
• Fahrenheit(Direct3DOpenGL)????????

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I/O devices

• Legacy ISA device
• Serial(RS232C)
• Parallel(IEEE1284)
• PS/2
• SCSI
• ATA/ATAPI
• USB
• IEEE1394
• PC Card

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RS232C(EIA)

• ??????????????????????
• 115.2Kbps(1Mbps???????)
• RS422A(15Mbps)

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IEEE1284

• ??????????????????????
• IEEE1284-1994??????
• ????
• ???????????? 150 K bps
• ??????(??????????)
• ??????
• ECP(Extended capabilities mode / MS,HP) 2 M bps
  ????
• EPP(Enhanced parallel port / Intel,Xircom) 8 M
  bps 7???????

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SCSI(ANSI X3.131-1986)

• SCSI-1(8bit 5MB/sec)
• SCSI-2
• Fast SCSI(8bit 10MB/sec)
• WIDE SCSI(16bit 10MB/sec)
• Fast-Wide(20MB/sec)

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SCSI

• SCSI-3(Parallel SCSI)
• Ultra SCSI(Fast-20 20MB/sec)
• Ultra Wide SCSI(40MB/sec)
• Ultra2 SCSI (LVD???)
• Ultra 40(Fast-40 40MB/sec)
• Ultra2 Wide(80MB/sec)
• Ultra3 SCSI
• Ultra 160(160MB/sec)

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SCSI

• SCSI-3(Serial SCSI)
• IEEE1394
• Fiber Channel
• SSA(Serial Storage Architecture)

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ATA/ATAPI

• IDE1986??Compaq,WD??????1991??ANSI?ATA(AT
  attachment)??????
• ATAPI(ATA packet interface)SCSI?????ATA????
• ATA/ATAPI-4

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ATA/ATAPI

• ????
• PIO??(16.7MB/sec)
• ??????DMA??(16.7MB/sec)
• Ultra DMA(Quantum,Intel)
• Ultra DMA/33,Ultra DMA/66,Ultra DMA/100

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USB(Universal Serial Bus)

• Intel,Compaq,IBM,MS,Northern Telecom,NEC???
• USB forum?????
• 4?(??2,???2) ???????
• Plug play,Hot plug in
• up /down stream

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USB(Universal Serial Bus)

• ?????????
• Intel chip set??430HX/VX??????
• ????tree(??6??)
• ??????? 5m
• 1.5Mbps?12Mbps mode
• isochronous mode / bulk mode / interrupt mode
• USB2.0 (vs. USB1.1)

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IEEE1394(i.LINK,FireWire)

• Apple,TI?1987???(???SONY,IBM???)
• IEEE1394-1995??????
• 6?(DS-Link ??2,???2,?????2) ????
• Plug Play,Hot plug in
• ???????????????(????????)
• node,leaf,branch
• ???????????

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IEEE1394???
leaf
branch
leaf
leaf
child notify
branch
branch
leaf
leaf
parent notify
leaf
leaf
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IEEE1394

• ????chain,star,tree
• ???????72m
• S100(12.5MB/sec),S200(25MB/sec),S400(50MB/sec),(S
  800.1600,3200..)
• isochronous mode / asynchronous mode
• IP over IEEE1394 (http//www.ietf.org/html.charter
  s/ip1394-charter.html)

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IEEE1394

• IEEE1394??????????
• USB2.0(up to 360-480Mbps)
• Windows98SE?????(SBP-2,bluebook)
• ?????????????????
• ????????????(???PC)

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PC Card

• JEIDA4.0/PCMCIA2.0(1990)
• memory card??
• JEIDA4.2/PCMCIA2.1(1993)
• I/O card,card service/socket service
• PC Card Standard 95
• CardBus (33MHz/32bit PCI),DMA,multi function card
• PC Card Standard 97
• ZV port (bus?????????/??????????)

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Network Interface

• ?????????????
• IEEE802.3ab (1000BASE-T)
• IEEE1394