MQ200_GCHSCR
reg = mq200_read(sc, MQ200_GCHSCR(gc));
#define MQ200_GC1HSCR MQ200_GCHSCR(0)
#define MQ200_GC2HSCR MQ200_GCHSCR(1)
mq200_write(sc, MQ200_GCHSCR(MQ200_GC1),