20 lines
426 B
C
20 lines
426 B
C
#include "types.h"
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#include "x86.h"
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#include "traps.h"
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// I/O Addresses of the two programmable interrupt controllers
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#define IO_PIC1 0x20 // Master (IRQs 0-7)
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#define IO_PIC2 0xA0 // Slave (IRQs 8-15)
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// Don't use the 8259A interrupt controllers. Xv6 assumes SMP hardware.
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void
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picinit(void)
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{
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// mask all interrupts
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outb(IO_PIC1+1, 0xFF);
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outb(IO_PIC2+1, 0xFF);
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}
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//PAGEBREAK!
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// Blank page.
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