19 lines
355 B
C
19 lines
355 B
C
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#include "io.h"
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void outb(uint16_t port, uint8_t val) {
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asm volatile ("outb %0, %1" : : "a"(val), "Nd"(port));
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}
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uint8_t inb(uint16_t port) {
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uint8_t ret;
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asm volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port));
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return ret;
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}
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void io_wait(void)
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{
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asm volatile ( "jmp 1f\n\t"
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"1:jmp 2f\n\t"
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"2:" );
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}
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