CRCCONTROL1
ahc->suspend_state.crccontrol1 = ahc_inb(ahc, CRCCONTROL1);
ahc_outb(ahc, CRCCONTROL1, ahc->suspend_state.crccontrol1);
ahc_outb(ahc, CRCCONTROL1, CRCVALCHKEN|CRCENDCHKEN|CRCREQCHKEN