Annotation of 43BSDReno/sys/vaxif/if_enreg.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution is only permitted until one year after the first shipment
        !             6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !             7:  * binary forms are permitted provided that: (1) source distributions retain
        !             8:  * this entire copyright notice and comment, and (2) distributions including
        !             9:  * binaries display the following acknowledgement:  This product includes
        !            10:  * software developed by the University of California, Berkeley and its
        !            11:  * contributors'' in the documentation or other materials provided with the
        !            12:  * distribution and in all advertising materials mentioning features or use
        !            13:  * of this software.  Neither the name of the University nor the names of
        !            14:  * its contributors may be used to endorse or promote products derived from
        !            15:  * this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)if_enreg.h  7.3 (Berkeley) 6/28/90
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * Xerox experimental ethernet registers.
        !            25:  *
        !            26:  * N.B.: status register and device address are read/write,
        !            27:  * device address is read-only, rest are WRITE ONLY!
        !            28:  */
        !            29: struct endevice {
        !            30:        short   en_owc;         /* output word count (10 bits) */
        !            31:        short   en_oba;         /* output buffer address */
        !            32:        short   en_ostat;       /* output control and status */
        !            33:        short   en_odelay;      /* output start delay, 25usec units  */
        !            34:        short   en_iwc;         /* input word count */
        !            35:        short   en_iba;         /* input buffer address */
        !            36:        short   en_istat;       /* input csr */
        !            37:        short   en_addr;        /* ~device address (low 8 bits) */
        !            38: };
        !            39: 
        !            40: /*
        !            41:  * Control and status bits.
        !            42:  */
        !            43: #define EN_IERROR      0x8000          /* CRC error, buf ovflo or overrun */
        !            44: #define        EN_OERROR       0x8000          /* collision or output underrun */
        !            45: #define EN_OPDONE      0x0080          /* previous operation completed */
        !            46: #define EN_IEN         0x0040          /* enable interrupt when DONE */
        !            47: #define        EN_PROMISCUOUS  0x0002          /* promiscuous, input any packet */
        !            48: #define EN_GO          0x0001          /* start op bit */
        !            49: 
        !            50: #define        EN_BITS "\10\20ERR\10OPDONE\7IEN\2PROM\1GO"
        !            51: 
        !            52: #define        spl_enet()      spl5()

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