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Annotation of 43BSD/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.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)if_enreg.h  7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Xerox experimental ethernet registers.
        !            11:  *
        !            12:  * N.B.: status register and device address are read/write,
        !            13:  * device address is read-only, rest are WRITE ONLY!
        !            14:  */
        !            15: struct endevice {
        !            16:        short   en_owc;         /* output word count (10 bits) */
        !            17:        short   en_oba;         /* output buffer address */
        !            18:        short   en_ostat;       /* output control and status */
        !            19:        short   en_odelay;      /* output start delay, 25usec units  */
        !            20:        short   en_iwc;         /* input word count */
        !            21:        short   en_iba;         /* input buffer address */
        !            22:        short   en_istat;       /* input csr */
        !            23:        short   en_addr;        /* ~device address (low 8 bits) */
        !            24: };
        !            25: 
        !            26: /*
        !            27:  * Control and status bits.
        !            28:  */
        !            29: #define EN_IERROR      0x8000          /* CRC error, buf ovflo or overrun */
        !            30: #define        EN_OERROR       0x8000          /* collision or output underrun */
        !            31: #define EN_OPDONE      0x0080          /* previous operation completed */
        !            32: #define EN_IEN         0x0040          /* enable interrupt when DONE */
        !            33: #define        EN_PROMISCUOUS  0x0002          /* promiscuous, input any packet */
        !            34: #define EN_GO          0x0001          /* start op bit */
        !            35: 
        !            36: #define        EN_BITS "\10\20ERR\10OPDONE\7IEN\2PROM\1GO"
        !            37: 
        !            38: #define        spl_enet()      spl5()

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