UART_REG.H
UART_REG.H
// UART_REG.H
/** *.Name FP_MAKE * *.Title Макро для составления FAR-указателя * *.Descr Макро составляет FAR-указатель, пользуясь * значениями сегмента и смещения * *.Params FP_MAKE(seg,off) * seg - сегмент; * off - смещение * *.Return FAR-указатель seg:off **/
#define FP_MAKE(seg,off) ((void far *) \ ((((unsigned long) (unsigned)(seg)) << 16L) | \ ((unsigned long) (unsigned) (off))))
#pragma pack(1)
// регистр управления прерываниями
#define ICR_N 1
typedef union _ICR_ {
struct {
unsigned char in_ready : 1; unsigned char out_ready : 1; unsigned char err : 1; unsigned char change : 1; unsigned char reserv : 4;
} bit_reg;
unsigned char byte;
} ICR;
// регистр идентификации прерывания
#define IIDR_N 2
typedef union _IIDR_ {
struct {
unsigned char no_inter : 1; unsigned char inter_id : 2; unsigned char reserv : 5;
} bit_reg;
unsigned char byte;
} IIDR;
// регистр управления модемом
#define MCR_N 4
typedef union _MCR_ {
struct {
unsigned char dtr : 1; unsigned char rts : 1; unsigned char out1 : 1; unsigned char out2 : 1; unsigned char diag : 1; unsigned char reserv : 3;
} bit_reg;
unsigned char byte;
} MCR;
// регистр состояния модема
#define MSR_N 6
typedef union _MSR_ {
struct {
unsigned char change_cts : 1; unsigned char change_dsr : 1; unsigned char change_ri : 1; unsigned char change_dcd : 1; unsigned char cts : 1; unsigned char dsr : 1; unsigned char ri : 1; unsigned char dcd : 1;
} bit_reg;
unsigned char byte;
} MSR;
// регистр состояния линии
#define LSR_N 5
typedef union _LSR_ {
struct {
unsigned char in_ready : 1; unsigned char overflow : 1; unsigned char parity : 1; unsigned char synxr : 1; unsigned char break_detect : 1; unsigned char out_ready : 1; unsigned char shift_ready : 1; unsigned char taimout : 1;
} bit_reg;
unsigned char byte;
} LSR;
// управляющий регистр
#define LCR_N 3
typedef union _LCR_ {
struct {
unsigned char len : 2; unsigned char stop : 1; unsigned char parity : 2; unsigned char stuck_parity : 1; unsigned char en_break_ctl : 1; unsigned char dlab : 1;
} bit_reg;
unsigned char byte;
} LCR;
#pragma pack()
int test_com( unsigned );
