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Annotation of researchv9/sys/sun3/enable.h, revision 1.1.1.1

1.1       root        1: /*      @(#)enable.h 1.1 86/02/03 SMI      */
                      2: 
                      3: /*
                      4:  * Copyright (c) 1985 by Sun Microsystems, Inc.
                      5:  */
                      6: 
                      7: /*
                      8:  * The System Enable register controls overall
                      9:  * operation of the system.  When the system is
                     10:  * reset, the Enable register is cleared.  The
                     11:  * enable register is addressed as a byte in
                     12:  * FC_MAP space.
                     13:  */
                     14: 
                     15: /*
                     16:  * Bits of the Enable Register
                     17:  */
                     18: #define        ENA_DIAG        0x01            /* r/o - diag switch, 1 = on */
                     19: #define        ENA_FPA         0x02            /* r/w - enable floating point accel */
                     20: #define        ENA_COPY        0x04            /* r/w - enable copy update mode */
                     21: #define        ENA_VIDEO       0x08            /* r/w - enable video memory */
                     22: #define        ENA_CACHE       0x10            /* r/w - enable external cache */
                     23: #define        ENA_SDVMA       0x20            /* r/w - enable system DVMA */
                     24: #define        ENA_FPP         0x40            /* r/w - enable floating point proc */
                     25: #define        ENA_NOTBOOT     0x80            /* r/w - non-boot state, 1 = normal */
                     26: 
                     27: 
                     28: #define        ENABLEREG       0x40000000      /* addr of enable reg in FC_MAP space */

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