311                     isa_outb(IO_ICU1 + PIC_OCW1, imen);  in intr_calculatemasks()
312                     isa_outb(IO_ICU2 + PIC_OCW1, imen >> 8);  in intr_calculatemasks()
429                     isa_outb(IO_ICU2 + PIC_OCW1, imen >> 8);  in isabr_iointr()
430                     isa_outb(IO_ICU2 + PIC_OCW2,  in isabr_iointr()
433                     isa_outb(IO_ICU1,  in isabr_iointr()
437                     isa_outb(IO_ICU1 + PIC_OCW1, imen);  in isabr_iointr()
438                     isa_outb(IO_ICU1 + PIC_OCW2,  in isabr_iointr()
458           isa_outb(IO_ICU1 + PIC_OCW1, imen);  in isabr_iointr()
459           isa_outb(IO_ICU2 + PIC_OCW1, imen >> 8);  in isabr_iointr()
487           isa_outb(IO_ICU1 + PIC_ICW1, ICW1_SELECT | ICW1_IC4);  in isabr_initicu()
489           isa_outb(IO_ICU1 + PIC_ICW2, 0);  in isabr_initicu()
491           isa_outb(IO_ICU1 + PIC_ICW3, ICW3_CASCADE(IRQ_SLAVE));  in isabr_initicu()
493           isa_outb(IO_ICU1 + PIC_ICW4, ICW4_8086);  in isabr_initicu()
496           isa_outb(IO_ICU1 + PIC_OCW1, 0xff);  in isabr_initicu()
499           isa_outb(IO_ICU1 + PIC_OCW3, OCW3_SELECT | OCW3_SSMM | OCW3_SMM);  in isabr_initicu()
501           isa_outb(IO_ICU1 + PIC_OCW3, OCW3_SELECT | OCW3_RR);  in isabr_initicu()
504           isa_outb(IO_ICU1 + PIC_OCW2,  in isabr_initicu()
509           isa_outb(IO_ICU2 + PIC_ICW1, ICW1_SELECT | ICW1_IC4);  in isabr_initicu()
511           isa_outb(IO_ICU2 + PIC_ICW2, 8);  in isabr_initicu()
513           isa_outb(IO_ICU2 + PIC_ICW3, ICW3_SIC(IRQ_SLAVE));  in isabr_initicu()
515           isa_outb(IO_ICU2 + PIC_ICW4, ICW4_8086);            in isabr_initicu()
518           isa_outb(IO_ICU2 + PIC_OCW1, 0xff);  in isabr_initicu()
521           isa_outb(IO_ICU2 + PIC_OCW3, OCW3_SELECT | OCW3_SSMM | OCW3_SMM);  in isabr_initicu()
523           isa_outb(IO_ICU2 + PIC_OCW3, OCW3_SELECT | OCW3_RR);  in isabr_initicu()
537           isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) & ~PIT_SPKR);  in sysbeepstop()
555                     isa_outb(IO_TIMER1 + TIMER_MODE,  in sysbeep()
557                     isa_outb(IO_TIMER1 + TIMER_CNTR2, TIMER_DIV(pitch) % 256);  in sysbeep()
558                     isa_outb(IO_TIMER1 + TIMER_CNTR2, TIMER_DIV(pitch) / 256);  in sysbeep()
559                     isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) | PIT_SPKR);  in sysbeep()