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Annotation of 43BSD/sys/stand/savax.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:  *     @(#)savax.h     7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Standalone definitions peculiar to vaxen
        !            11:  * The mba devices in the standalone system are addressed as 
        !            12:  *     xx(unit,section)
        !            13:  * where unit is
        !            14:  *     8*mbanum+drive
        !            15:  * The mbadrv macro gives the address of the device registers
        !            16:  * for the specified unit; the mbamba macro gives the address of the
        !            17:  * mba registers themselves.
        !            18:  *
        !            19:  * The uba devices are also addressed by giving, as unit,
        !            20:  *     8*ubanum+drive
        !            21:  * The ubamem macro converts a specified unibus address (ala pdp-11)
        !            22:  * into a unibus memory address space address.
        !            23:  */
        !            24: 
        !            25: int    cpu;            /* see <sys/cpu.h> */
        !            26: 
        !            27: #define        MAXNMBA 4
        !            28: #define        MAXNUBA 4
        !            29: struct mba_regs **mbaddr;
        !            30: int    mbaact;
        !            31: caddr_t        *umaddr;
        !            32: struct uba_regs **ubaddr;
        !            33: 
        !            34: #define        UNITTOMBA(unit)         ((unit)>>3)
        !            35: #define        UNITTODRIVE(unit)       ((unit)&07)
        !            36: 
        !            37: #define        mbamba(unit)            (mbaddr[UNITTOMBA(unit)])
        !            38: #define        mbadrv(unit)            (&mbamba(unit)->mba_drv[UNITTODRIVE(unit)])
        !            39: 
        !            40: #define        UNITTOUBA(unit)         ((unit)>>3)
        !            41: #define        ubauba(unit)            (ubaddr[UNITTOUBA(unit)])
        !            42: #define        ubamem(unit, off)       ((umaddr[UNITTOUBA(unit)]+ubdevreg(off)))
        !            43: 
        !            44: #define        PHYSUBA0        0x20006000
        !            45: #define        PHYSMBA0        0x20010000
        !            46: #define        PHYSMBA1        0x20012000
        !            47: #define        PHYSUMEM        0x2013e000
        !            48: 
        !            49: /*
        !            50:  * RM03/5 (4-byte header plus CRC) format information:
        !            51:  * codes for sector header word 1
        !            52:  */
        !            53: #define        HDR1_FMT22      0x1000  /* standard 16 bit format */
        !            54: #define        HDR1_OKSCT      0xc000  /* sector ok */
        !            55: #define        HDR1_SSF        0x2000  /* skip sector flag */

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