MCMD_PORT
outb(MCMD_PORT, PIC_NSEOI);
outb(MCMD_PORT, PIC_NSEOI);
outb(MCMD_PORT, PIC_NSEOI);
outb(MCMD_PORT, PIC_SEOI_LVL7);
printf("#define\tMCMD_PORT 0x%x\n", MCMD_PORT);
(void) outb(MCMD_PORT, PIC_ICW1BASE|PIC_NEEDICW4);
(void) outb(MCMD_PORT, PIC_READISR);