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Annotation of 43BSD/sys/vaxif/if_hdhreg.h, revision 1.1

1.1     ! root        1: /*     @(#)if_hdhreg.h 7.1 (Berkeley) 6/5/86 */
        !             2: 
        !             3: 
        !             4: /* $Header$ */
        !             5: 
        !             6: /*
        !             7:  * ACC IF-11/HDH interface
        !             8:  */
        !             9: 
        !            10: struct hdhregs {                       /* device registers */
        !            11:        u_short csr;                    /* control and status register */
        !            12:        u_char  iochn;                  /* logical channel */
        !            13:        u_char  ioadx;                  /* address extension (A16,A17) */
        !            14:        u_short ioadl;                  /* buffer address (A0-A15) */
        !            15:        u_short iocnt;                  /* byte count */
        !            16:        u_char  iofcn;                  /* UMC funciton code */
        !            17:        u_char  iosbf;                  /* UMC subfunction code */
        !            18:        u_char  ioini;                  /* comm regs valid flag */
        !            19:        u_char  staack;                 /* interrupt acknowledge flag */
        !            20:        u_char  ionmi;                  /* NMI routine active flag */
        !            21:        u_char  ioxfrg;                 /* UMR transfer grant flag */
        !            22:        u_char  stachn;                 /* interrupt channel number */
        !            23:        u_char  statyp;                 /* interrupt type code */
        !            24:        u_char  stacc;                  /* completion function code */
        !            25:        u_char  stacs;                  /* completion subfunction code */
        !            26:        u_short stacnt;                 /* completion byte count */
        !            27: };
        !            28: 
        !            29: /* defines for CSR */
        !            30: 
        !            31: #define HDH_UER                0100000         /* UMC error condition */
        !            32: #define HDH_NXM                0040000         /* non-existent memory error */
        !            33: #define HDH_PER                0020000         /* UNIBUS parity error */
        !            34: #define HDH_ZRUN       0010000         /* Z80 running */
        !            35: #define HDH_ZGO                0004000         /* Z80 not in wait state */
        !            36: #define HDH_MBLK       0000200         /* memory swap state (0=main, 1=srv) */
        !            37: #define        HDH_SRV         0000100         /* select UMC service memory */
        !            38: #define HDH_MAIN       0000040         /* select UMC main memory */
        !            39: #define HDH_DMA                0000020         /* DMA enable */
        !            40: #define HDH_WRT                0000010         /* DMA write enable */
        !            41: #define HDH_IEN                0000004         /* interrupt enable */
        !            42: #define HDH_RST                0000002         /* reset */
        !            43: #define        HDH_NMI         0000001         /* cause NMI */
        !            44: 
        !            45: #define HDH_BITS \
        !            46: "\10\20UER\17NXM\16PER\15ZRUN\14ZGO\10MBLK\7SRV\6MAIN\5DMA\4WRT\3IEN\2RST\1NMI"
        !            47: 
        !            48: /* start i/o function code definitions */
        !            49: 
        !            50: #define HDHWRT         0       /* write to if-11 */
        !            51: #define HDHRDB         1       /* read from if-11 */
        !            52: #define HDHSTR         2       /* stream flag */
        !            53: #define HDHEOS         6       /* end of stream flag */
        !            54: #define HDHABT         8       /* abort flag */
        !            55: #define HDHUMR         16      /* UMR protocol flag */
        !            56: 
        !            57: /* interrupt type definitions */
        !            58: 
        !            59: #define HDHSACK                0       /* start i/o ack */
        !            60: #define HDHDONE                1       /* i/o completion */
        !            61: #define HDHXREQ                2       /* UMR protocol transfer request */
        !            62: 
        !            63: /* i/o completion codes */
        !            64: 
        !            65: #define HDHIOCOK       0001    /* successful completion */
        !            66: #define HDHIOCOKP      0002    /* successful completion, more data pending */
        !            67: #define HDHIOCABT      0361    /* i/o aborted */
        !            68: #define HDHIOCERR      0321    /* program error */
        !            69: #define HDHIOCOVR      0363    /* overrun error */
        !            70: #define HDHIOCUBE      0374    /* non-existant memory or unibus error */
        !            71: 
        !            72: /* UMR protocol transfer grant code definitions */
        !            73: 
        !            74: #define HDHXEVN                1       /* start with even address */
        !            75: #define HDHXODD                2       /* start with odd address */
        !            76: #define HDHNUMR                4       /* non-UMR transfer */
        !            77: #define HDHXABT                8       /* abort transfer */
        !            78: 
        !            79: /* HDH supervisor request code definitions */
        !            80: #define HDHINIT                0x42    /* SYSINIT opcode */
        !            81: 
        !            82: #define HDHSUP         0xf0    /* supervisor HDH status/line control prefix */
        !            83: #define HDHIMP         0x400   /* IMP line up modifier */
        !            84: #define HDHREFL                0x800   /* reflect mode modifier */
        !            85: #define HDHINLB                0x1000  /* internal loopback modifier */
        !            86: #define HDHEXLP                0x2000  /* external loopback modifier */
        !            87: #define HDHRQST                (HDHSUP+0x0000) /* line status request */
        !            88: #define HDHRQUP                (HDHSUP+0x0100) /* line up request */
        !            89: #define HDHRQDN                (HDHSUP+0x0200) /* line down request */
        !            90: 
        !            91: /* HDH supervisor reply code definitions */
        !            92: 
        !            93: #define HDHIACK                (HDHSUP+0x4200) /* line init ack */
        !            94: #define HDHLNUP                (HDHSUP+0x0100) /* line up reply */
        !            95: #define HDHLNDN                (HDHSUP+0x0200) /* line down reply */
        !            96: #define HDHLNACK       (HDHSUP+0x0300) /* ack line up request (but line is down now) */
        !            97: #define HDHTIMO                (HDHSUP+0x0400) /* line timeout */
        !            98: #define HDHLOOP                (HDHSUP+0x0500) /* loopback message */
        !            99: #define HDHDTERR       (HDHSUP+0x0600) /* host data error detected */
        !           100: #define HDHSQRCV       (HDHSUP+0x0700) /* HDLC sequence error detected by IMP */
        !           101: #define HDHSQERR       (HDHSUP+0x0800) /* HDLC sequence error detected by if-11 */

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