第九章

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第 9 第 第第第第 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中Linux 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 中中中中中中中 short 中中中中中中中中中中中中中中中中中中中中 short 中中中中中中 short int (中中 C 中中中中中中中)中中中中中中中中中中( int errupt)中中中中中 第第第第 中中中中中 8 中“ 硬硬硬硬 ”中“中中中中”中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 lp 中中中中中中中中中中中中中中中中中中中中中中 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 2 中中中中中 4 中(0x37a中0x27a 中中中中中中中)中中中中中中中中 short 中中中中中中中中中 outb 中中中中中 中中中中中中中中中中中中中 10(中中中"ACK"中)中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 9 中中中 10 中中中中中中 中中中中中中中中 25 中 D 中中中中中中中中中中中中 中中 9 中中中中中中中中中中中中中中中中中中中 /dev/short0 中中中中中中中中中中中中中中中中中中中中中中中中中中中中 ASCII 中中中中中中中中中中中中中中中中中中中中中中中中中中 中中中中中中“中中”中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中Linux-x86 中 Linux-Alpha 中中中中中中中中中中中中中中中中中中中 中中 第第第第第第第第 中中中中中中中中中中中中中中中中中中中中中 15 中 16 中中中中中中中中中中中中中中中中中中中中中中 I/O 中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中中 IRQ中中 Interrupt ReQuest中中中中中中中中中中中中中中中中中中中 <linux/sched.h> 中中中中中中中中中中中中中中中中中中中 int request_irq(unsigned int irq, void (*handler)(int, void*, struct pt_regs *), unsigned long flags, const char *device, void *dev_id); void free_irq(unsigned int irq, void *dev_id); 中中中1.2 中中中中中中中中中中中中中中中中中中中中中中中中中“IRQ 中中中中中中中中中中”中中中
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