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Other High Speed Buses

ISA (IBM Standard Architecture)
  • connects only to a card that has an 8-86,186 or 286 processor, and in which the processor addressing and IBM PC architecture addressing limitations.
  • ISA Bus memory in two ranges: 640kb to 1MB or 15MB to 16MB.
  • The instruction set provides 64k I/O, the ISA ignores A10 to A15 addresses and therefore only 1024 I/O port addresses are available.
  • EISA (Extended ISA) works for 32 bit data and address lines version of ISA.
PCI and PCI-X Buses
  • Peripheral Component Interconnect
  • Platform Independent (Connects to any architecture and not like ISA)
  • PCI provides three types of synchronous parallel interfaces a) 32/33 MHz b) 64/66MHz and PCI-X supports 64/100MHz
Later two super speed versions of PCI have been introduced
  • PCI Super - 264/528 MBps at 3.3V on a 64 bit bus
  • PCI Super - 132/264 Mbps on a 32 bit bus
  • PCI-X Super - 800 MBps on a 64 bit bus at 3.3V

Comments

  1. I wrote this program in the lab test.
    Please check the generated delay in the graph in RIDE.I found it as per the question...

    #include"reg51.h"
    void delay1();
    void delay2();

    void main()
    {
    P1=0x00;
    delay2();
    P1=0xff;
    delay1();
    }

    void delay1()
    {
    int i;
    for(i=0;i<333;i++)
    {
    }
    }

    void delay2()
    {
    int i;
    for(i=0;i<200;i++)
    {
    }
    }

    Please do check this program in RIDE..

    Shashank
    05bce168
    C Batch

    ReplyDelete
  2. I wrote this program in the lab test.
    Please check the generated delay in the graph in RIDE.I found it as per the question...

    #include"reg51.h"
    void delay1();
    void delay2();

    void main()
    {
    P1=0xFF;
    delay1();
    P1=0x00;
    delay2();
    }

    void delay1()
    {
    int i,j;
    for(i=0;i<5;i++)
    {
    for(j=0;j<64;j++)
    {
    }
    }
    }

    void delay2()
    {
    int i,j;
    for(i=0;i<1;i++)
    {
    for(j=0;j<1;j++)
    {
    }
    }
    }

    Please do check this program in RIDE..

    Sourav Mitra
    05bce177
    C Batch

    ReplyDelete

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