+#define B0 (0 << 0)
+#define B50 (1 << 0)
+#define B75 (2 << 0)
+#define B110 (3 << 0)
+#define B134 (4 << 0)
+#define B150 (5 << 0)
+#define B200 (6 << 0)
+#define B300 (7 << 0)
+#define B600 (8 << 0)
+#define B1200 (9 << 0)
+#define B1800 (10 << 0)
+#define B2400 (11 << 0)
+#define B4800 (12 << 0)
+#define B9600 (13 << 0)
+#define B19200 (14 << 0)
+#define B38400 (15 << 0)