x86/boot/apm.c

21 	struct biosregs ireg, oreg;
24 	initregs(&ireg);
25 	ireg.ah = 0x53;
26 	intcall(0x15, &ireg, &oreg);
38 	ireg.al = 0x04;
39 	intcall(0x15, &ireg, NULL);
42 	ireg.al = 0x03;
43 	intcall(0x15, &ireg, &oreg);
59 	ireg.al = 0x00;
60 	intcall(0x15, &ireg, &oreg);
64 		ireg.al = 0x04;
65 		intcall(0x15, &ireg, NULL);