#define CHAN1 1
#define CHAN2 02
#define CHAN3 04
#define CHAN4 010
#define CLOCK60 0
#define CLOCK56 0100
#define PULSE   0200
#define DIV1    0
#define DIV2    020
#define DIV4    040
#define DIV8    060
#define DTOA    0
#define ATOD    0400
#define IOLINK  01000