source: buchla-68k/include/ascii.h

/*
   ==========================================================================
        ascii.h -- Standard ASCII character definitions
        Version 5 -- 1987-06-03 -- D.N. Lynx Crowe
   ==========================================================================
*/

#pragma once

#define A_NUL   0x00    /* ^@ */
#define A_SOH   0x01    /* ^A */
#define A_STX   0x02    /* ^B */
#define A_ETX   0x03    /* ^C */
#define A_EOT   0x04    /* ^D */
#define A_ENQ   0x05    /* ^E */
#define A_ACK   0x06    /* ^F */
#define A_BEL   0x07    /* ^G */
#define A_BS    0x08    /* ^H */
#define A_HT    0x09    /* ^I */
#define A_LF    0x0A    /* ^J */
#define A_VT    0x0B    /* ^K */
#define A_FF    0x0C    /* ^L */
#define A_CR    0x0D    /* ^M */
#define A_SO    0x0E    /* ^N */
#define A_SI    0x0F    /* ^O */

#define A_DLE   0x10    /* ^P */
#define A_DC1   0x11    /* ^Q */
#define A_DC2   0x12    /* ^R */
#define A_DC3   0x13    /* ^S */
#define A_DC4   0x14    /* ^T */
#define A_NAK   0x15    /* ^U */
#define A_SYN   0x16    /* ^V */
#define A_ETB   0x17    /* ^W */
#define A_CAN   0x18    /* ^X */
#define A_EM    0x19    /* ^Y */
#define A_SUB   0x1A    /* ^Z */
#define A_ESC   0x1B    /* ^[ */
#define A_FS    0x1C    /* ^\ */
#define A_GS    0x1D    /* ^] */
#define A_RS    0x1E    /* ^^ */
#define A_US    0x1F    /* ^_ */

#define A_DEL   0x7F    /* DEL */

#define A_XON   0x11    /* DC1 = old ASCII XON */
#define A_XOFF  0x13    /* DC3 = old ASCII XOFF */

#define CTL(x)  (x - '@')