P3
P3 = 3, /* port 3 */
#define P3 w2(6);w2(4);w2(6);w2(4);
P3 = 8,
enum { T1, T2, T3, P1, P2, P3, P4, P5, P6, P7, P8, P9 };
#define P3(x) ((x) * 8)
#define P3 93