電腦硬體的CPU中斷表INT00H ~INT15的優先順序

請問電腦硬體的CPU中斷表 INT00H ~INT15的優先順序

看了一下

不知道優先順序

有誰知道的可以說一下嗎 > <

只知道大概有哪些功能

剛接觸到這些東西

Update:

謝謝 Chen 的回答

不過現在只想要

CPU中斷表 INT00H ~INT15H的優先順序

11 Answers

Rating
  • Chen
    Lv 6
    6 years ago
    Favorite Answer

    hardware interrupted table is divided into two part in real mode for 16bit

    and protect mode for 32bit or 64bit

    in real mode: IVT has 256 vector table, evey vector table has 4 byte ( ip, cs),

    start address 00000h-003ffh, hardware interrupt number IRQ0~15 is allocated in IVT[8] ~IVT[24], general IRQ is allocated in PC

    IRQ 0: Timer (triggered 18.2/second) fixed=====> priority heigh

    IRQ 1: Keyboard (keypress) fixed

    IRQ 2:

    IRQ 3,4: Serial Ports (com2/com1 data RX) fixed

    IRQ 5: SoundBlaster (transfer request)

    IRQ 6: Floppy (read/write completed)

    IRQ 8: Real-time Clock fixed

    IRQ 9: Ethernet

    IRQ 11: CDROM (data read)

    IRQ 13: Math Co-Processor

    IRQ 15: IDE Hard-Drive Controller =====> priority low

    in protect mode:

    IDT has 256 vector table , evey vector has 8 byte for 32bit, every vector has 16byte for 64bit, addres is loaded by IDTR register.

    hardware interrupt number IRQ0~15 is allocated in IDT[20] ~IDT[36]

    It may share IDT by ISR from hardware interrrupted.

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    5 years ago

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  • Anonymous
    6 years ago

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  • Anonymous
    6 years ago
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  • 6 years ago

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  • 6 years ago

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  • 6 years ago

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  • Anonymous
    6 years ago

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