28 lines
501 B
C
28 lines
501 B
C
#include <io.h>
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uint8_t inportb(uint16_t port) {
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uint8_t result;
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asm volatile ("in %%dx, %%al"
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: "=a" (result)
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: "d" (port));
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return result;
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}
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void outportb(uint16_t port, uint8_t byte) {
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asm volatile ("out %%al, %%dx"
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: // no output
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: "a" (byte), "d" (port));
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}
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uint16_t inportw(uint16_t port) {
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uint16_t result;
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asm volatile ("in %%dx, %%ax"
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: "=a" (result)
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: "d" (port));
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return result;
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}
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