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Annotation of xinu/h/qbus.h, revision 1.1

1.1     ! root        1: /* qbus.h */
        !             2: 
        !             3: /* Microvax II Q-bus mappiong constants */
        !             4:                                                /* UVAX II Reg Addrs.   */
        !             5: #define QMAP   ((unsigned int *)0x20088000)    /*  qbus map regs.      */
        !             6: #define QMMECSR        ((unsigned int *)0x20080004)    /*  mem error CSR       */
        !             7: #define        QMIPCR  ((unsigned short *)0x20001f40)  /*  cpu communic. reg   */
        !             8: #define        QMCPMBX 0x200b801c                      /*  console pgm mailbox */
        !             9: 
        !            10:                                                /* UVAXII bus map regs: */
        !            11: #define        QMNMREG 8192                            /* # mapping registers  */
        !            12: #define        QMENAB  0x20                            /* enable bus mapping   */
        !            13: #define        QMREGV  0x80000000                      /* map register valid   */
        !            14: #define        QMHALT  0x23                            /* QMCPMBX value to     */
        !            15:                                                /*      halt the CPU    */
        !            16: 
        !            17: #ifndef        ASM
        !            18: 
        !            19:        /* extract high 6 bits of 22-bit Q-bus address into low 6 bits*/
        !            20: #define        hiQ2low(x) (short)(((unsigned int)x>>(sizeof(short)*8)) & LOW6)
        !            21: 
        !            22:        /* move low 6 bits from short to high 6 bits of 22-bit Qbus address */
        !            23: #define        lowQ2hi(x) (((int)x & LOW6) << (sizeof(short)*8))
        !            24: 
        !            25: #endif ASM

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