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kylegordon/gist:3960418

Created October 26, 2012 18:15
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wait_change()
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gistfile1.txt
void wait_change() {
int on;
unsigned char v;
do {
v = inb(status);
on = !!(v & 0x20);
usleep(1000);
} while (on == laston);
laston = on;
}
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