Created
April 23, 2021 06:02
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標本化定理の実験
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// | |
// 標本化定理の実験 | |
// | |
#include <pc.h> | |
#define BASE 0x01C0 | |
int main(int argc, char const *argv[]){ | |
// define | |
unsigned char ad_h, ad_l; | |
// configuration | |
outportb(BASE + 1, 0x02); | |
outportb(BASE + 5, 0x02); | |
// loop | |
while(1){ | |
// ad | |
outportb(BASE + 0, 0x00); // start conversion | |
while(inportb(BASE +2) & 0x01){} | |
ad_h = inportb(BASE + 1); | |
ad_l = inportb(BASE + 0); | |
// da | |
while(inportb(BASE+2) & 0x02){} | |
outportb(BASE + 6, ad_l); | |
outportb(BASE+7, ad_h); | |
} | |
return 0; | |
} |
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