G2CNTRL
outb(G2CNTRL_IRST,G2CNTRL(base)); /* interrupt reset */
outb(G2CNTRL_HRDY,G2CNTRL(base));
outb(G2CNTRL_HRDY,G2CNTRL(base));
outb(G2CNTRL_HRST, G2CNTRL(slotbase));
outb(0, G2CNTRL(slotbase));