/* Define some ASCII characters. */

#define NUL 0
#define SOH 1
#define STX 2
#define ETX 3
#define EOT 4
#define ENQ 5
#define ACK 6
#define BEL 7

#define BS  8
#define TAB 9
#define LF  10
#define VT  11
#define FF  12
#define CR  13
#define SO  14
#define SI  15

#define DLE 16
#define DC1 17
#define DC2 18
#define DC3 19
#define DC4 20
#define NAK 21
#define SYN 22
#define ETB 23

#define CAN 24
#define EM  25
#define SUB 26
#define ESC 27
#define FS  28
#define CS  29
#define RS  30
#define US  31

#define DEL 0x7f

/* Equivalences */

#define XON DC1
#define XOF DC3