A_IOCFG_GPOUT0
outw(reg | A_IOCFG_GPOUT0, emu->port + A_IOCFG);
ucontrol->value.integer.value[0] = inw(emu->port + A_IOCFG) & A_IOCFG_GPOUT0 ? 1 : 0;
val = sw ? A_IOCFG_GPOUT0 : 0;
change = (reg & A_IOCFG_GPOUT0) != val;
reg &= ~A_IOCFG_GPOUT0;