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enable.h
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1990-12-19
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826b
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29 lines
/* @(#)enable.h 1.3 88/02/08 SMI */
/*
* Copyright (c) 1986 by Sun Microsystems, Inc.
*/
/*
* The System Enable register controls overall
* operation of the system. When the system is
* reset, the Enable register is cleared. The
* enable register is addressed as a byte in
* FC_MAP space.
*/
/*
* Bits of the Enable Register
*/
#define ENA_DIAG 0x01 /* r/o - diag switch, 1 = on */
#define ENA_COPY 0x04 /* r/w - enable copy update mode */
#define ENA_VIDEO 0x08 /* r/w - enable video memory */
#define ENA_CACHE 0x10 /* r/w - enable external cache */
#define ENA_SDVMA 0x20 /* r/w - enable system DVMA */
#define ENA_FPP 0x40 /* r/w - enable floating point proc */
#define ENA_NOTBOOT 0x80 /* r/w - non-boot state, 1 = normal */
#define ENABLEREG 0x40000000 /* addr of enable reg in FC_MAP space */