A_IRQ_MSK
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, 0);
HFC_outb(hc, A_IRQ_MSK, V_IRQ);
HFC_outb(hc, A_IRQ_MSK, V_IRQ);