mbi.h

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#ifndef _MBI_H_
#define _MBI_H_
 
/**************************************************************************
 *                                    *
 *       Copyright (C) 1994, Silicon Graphics, Inc.       *
 *                                    *
 *  These coded instructions, statements, and computer programs  contain  *
 *  unpublished  proprietary  information of Silicon Graphics, Inc., and  *
 *  are protected by Federal copyright law.  They  may  not be disclosed  *
 *  to  third  parties  or copied or duplicated in any form, in whole or  *
 *  in part, without the prior written consent of Silicon Graphics, Inc.  *
 *                                    *
 **************************************************************************/
 
/**************************************************************************
 *
 *  $Revision: 1.136 $
 *  $Date: 1999/01/05 13:04:00 $
 *  $Source: /hosts/gate3/exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/mbi.h,v $
 *
 **************************************************************************/
 
/*
 * Header file for the Media Binary Interface
 *
 * NOTE: This file is included by the RSP microcode, so any C-specific
 * constructs must be bracketed by #ifdef _LANGUAGE_C
 *
 */
 
 
/*
 * the SHIFT macros are used to build display list commands, inserting
 * bit-fields into a 32-bit word. They take a value, a shift amount, 
 * and a width.
 *
 * For the left shift, the lower bits of the value are masked, 
 * then shifted left.
 *
 * For the right shift, the value is shifted right, then the lower bits
 * are masked.
 *
 * (NOTE: _SHIFTL(v, 0, 32) won't work, just use an assignment)
 *
 */
#define _SHIFTL(v, s, w)    \
    ((unsigned int) (((unsigned int)(v) & ((0x01 << (w)) - 1)) << (s)))
#define _SHIFTR(v, s, w)    \
    ((unsigned int)(((unsigned int)(v) >> (s)) & ((0x01 << (w)) - 1)))
 
#define _SHIFT _SHIFTL  /* old, for compatibility only */
 
#define G_ON    (1)
#define G_OFF   (0)
 
/**************************************************************************
 *
 * Graphics Binary Interface
 *
 **************************************************************************/
 
#include <PR/gbi.h>
 
/**************************************************************************
 *
 * Audio Binary Interface
 *
 **************************************************************************/
 
#include <PR/abi.h>
 
/**************************************************************************
 *
 * Task list
 *
 **************************************************************************/
 
#define M_GFXTASK   1
#define M_AUDTASK   2
#define M_VIDTASK   3
#define M_HVQTASK   6
#define M_HVQMTASK  7
 
/**************************************************************************
 *
 * Segment macros and definitions
 *
 **************************************************************************/
 
#define NUM_SEGMENTS        (16)
#define SEGMENT_OFFSET(a)   ((unsigned int)(a) & 0x00ffffff)
#define SEGMENT_NUMBER(a)   (((unsigned int)(a) << 4) >> 28)
#define SEGMENT_NUMBER2(a)  ((unsigned int)(a) >> 24)
#define SEGMENT_ADDR(num, off)  (((num) << 24) + (off))
 
#ifndef NULL
#define NULL 0
#endif
 
#endif /* !_MBI_H_ */