#ifndef __OS_SERIAL_H
#define __OS_SERIAL_H
/*
** ISR I/O Modes
*/
/********************************........xx.. */
#define BYTE_MODE 0x00 /* 00000000b */
#define PACKET_MODE 0x01 /* 00000001b */
#define VARIABLE_MODE 0x02 /* 00000010b */
/*
** Line Control Register
*/
/********************************........xx.. */
#define CLEAR_BITS 0xFC /* 11111100b */
#define BITS_5 0x00 /* 00000000b */
#define BITS_6 0x01 /* 00000001b */
#define BITS_7 0x02 /* 00000010b */
#define BITS_8 0x03 /* 00000011b */
/********************************.......x... */
#define CLEAR_STOP 0xFB /* 11111011b */
#define STOP_1 0x00 /* 00000000b */
#define STOP_2 0x04 /* 00000100b (Doesn't work w/ BITS_5) */
/*********************************...xxx.... */
#define CLEAR_PARITY 0xE7 /* 11000111b */
#define NO_PARITY 0x00 /* 00000000b */
#define ODD_PARITY 0x08 /* 00001000b */
#define EVEN_PARITY 0x18 /* 00011000b */
#define MARK_PARITY 0x28 /* 00101000b */
#define SPACE_PARITY 0x38 /* 00111000b */
/********************************...x....... */
#define CLEAR_MODE 0xBF /* 10111111b */
#define NORMAL 0x00 /* 00000000b */
#define BREAK 0x40 /* 01000000b */
/*
** HandShaking
*/
#define DTR 0x01 // 00000001b
#define RTS 0x02 // 00000010b
#define LOOPBACK 0x10 // 00010000b
/*
** Modem/Line Status Register
*/
#define D_CTS 0x0100 // 00000001 00000000b
#define D_DSR 0x0200 // 00000010 00000000b
#define D_RI 0x0400 // 00000100 00000000b
#define D_DCD 0x0800 // 00001000 00000000b
#define CTS 0x1000 // 00010000 00000000b
#define DSR 0x2000 // 00100000 00000000b
#define RI 0x4000 // 01000000 00000000b
#define DCD 0x8000 // 10000000 00000000b
#define RBF 0x0001 // 00000000 00000001b
#define OVR_ERROR 0x0002 // 00000000 00000010b
#define PAR_ERROR 0x0004 // 00000000 00000100b
#define FRM_ERROR 0x0008 // 00000000 00001000b
#define BRK_ERROR 0x0010 // 00000000 00010000b
#define THREMPTY 0x0020 // 00000000 00100000b
#define TEMPTY 0x0040 // 00000000 01000000b
#define FFO_ERROR 0x0080 // 00000000 10000000b
#endif
