2.9BSD - /usr/src/sys/dev/Others/dcreg.h

   1: struct  dcdevice    {
   2:     short   dcrcsr;         /* receiver status register */
   3:     short   dcrbuf;
   4:     short   dctcsr;
   5:     short   dctbuf;
   6: };
   7: 
   8: /* bits in dcrcsr */
   9: #define DC_ERR      0100000         /* error */
  10: #define DC_CTR      0040000         /* carrier transition */
  11: #define DC_RING     0020000         /* ring indicator */
  12: #define DC_OVERRUN  0010000         /* data overrun */
  13: /* bit 11 is unused */
  14: /* bits 10-9 are the character length */
  15: #define DC_SXDATA   0000400         /* superv. transmit data */
  16: #define DC_DONE     0000200         /* done */
  17: #define DC_IE       0000100         /* interrupt enable */
  18: #define DC_PCHK     0000040         /* parity check */
  19: /* bits 4-3 are the receiver speed */
  20: #define DC_CAR      0000004         /* carrier detect */
  21: #define DC_BRK      0000002         /* break */
  22: #define DC_DTR      0000001         /* data terminal ready */
  23: #define DC_BITS     \
  24: "\10\20ERR\17CTR\16RING\15OVERRUN\11SXDATA\10DONE\7IE\6PCHK\3CAR\2BRK\1DTR"
  25: 
  26: /* character lengths */
  27: #define DC_8BITS    0000000         /* 8 bits per character */
  28: #define DC_7BITS    0001000         /* 7 bits per character */
  29: #define DC_6BITS    0002000         /* 6 bits per character */
  30: #define DC_5BITS    0003000         /* 5 bits per character */
  31: 
  32: /* receiver (and transmitter) speeds */
  33: #define DC_SPEED0   0000000         /* lowest */
  34: #define DC_SPEED1   0000010
  35: #define DC_SPEED2   0000020
  36: #define DC_SPEED3   0000030         /* highest */
  37: 
  38: /* bits in dctcsr */
  39: #define DCTCSR_SRDATA   0100000         /* supervisory receive data */
  40: /* bits 14-9 are unused */
  41: #define DCTCSR_STOP1    0000400         /* stop code:  0= 2 stop bits */
  42: #define DCTCSR_RDY  0000200         /* ready */
  43: #define DCTCSR_TIE  0000100         /* transmit interrupt enable */
  44: /* bit 5 is unused */
  45: /* bits 4-3 are the transmitter speed select */
  46: #define DCTCSR_MM   0000004         /* maintenance */
  47: #define DCTCSR_CTS  0000002         /* clear to send */
  48: #define DCTCSR_RTS  0000001         /* request to send */
  49: #define DCTCSR_BITS "\10\20SRDATA\11STOP\10RDY\7TIE\3MM\2CTS\1RTS"

Defined struct's

Defined macros