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GuruMeditation
Docs » Include » graphics » copper.h / .i
#ifndef GRAPHICS_COPPER_H
#define GRAPHICS_COPPER_H
/*
**	$VER: copper.h 39.10 (31.5.1993)
**	Includes Release 45.1
**
**	graphics copper list intstruction definitions
**
**	(C) Copyright 1985-2001 Amiga, Inc.
**	    All Rights Reserved
*/

#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif

#define COPPER_MOVE 0	    /* pseude opcode for move #XXXX,dir */
#define COPPER_WAIT 1	    /* pseudo opcode for wait y,x */
#define CPRNXTBUF   2	    /* continue processing with next buffer */
#define CPR_NT_LOF  0x8000  /* copper instruction only for short frames */
#define CPR_NT_SHT  0x4000  /* copper instruction only for long frames */
#define CPR_NT_SYS  0x2000  /* copper user instruction only */

struct CopIns
{
    WORD   OpCode; /* 0 = move, 1 = wait */
    union
    {
	    struct CopList *nxtlist;
	    struct
	{
			union
			{
				WORD VWaitPos;	      /* vertical beam wait */
				WORD DestAddr;	      /* destination address of copper move */
			} u1;
			union
			{
				WORD HWaitPos;	      /* horizontal beam wait position */
				WORD DestData;	      /* destination immediate data to send */
			} u2;
		} u4;
    } u3;
};

/* shorthand for above */
#define NXTLIST     u3.nxtlist
#define VWAITPOS    u3.u4.u1.VWaitPos
#define DESTADDR    u3.u4.u1.DestAddr
#define HWAITPOS    u3.u4.u2.HWaitPos
#define DESTDATA    u3.u4.u2.DestData


/* structure of cprlist that points to list that hardware actually executes */
struct cprlist
{
    struct cprlist *Next;
    UWORD   *start;	    /* start of copper list */
    WORD   MaxCount;	   /* number of long instructions */
};

struct CopList
{
    struct  CopList *Next;  /* next block for this copper list */
    struct  CopList *_CopList;	/* system use */
    struct  ViewPort *_ViewPort;    /* system use */
    struct  CopIns *CopIns; /* start of this block */
    struct  CopIns *CopPtr; /* intermediate ptr */
    UWORD   *CopLStart;     /* mrgcop fills this in for Long Frame*/
    UWORD   *CopSStart;     /* mrgcop fills this in for Short Frame*/
    WORD   Count;	   /* intermediate counter */
    WORD   MaxCount;	   /* max # of copins for this block */
    WORD   DyOffset;	   /* offset this copper list vertical waits */
#ifdef V1_3
    UWORD   *Cop2Start;
    UWORD   *Cop3Start;
    UWORD   *Cop4Start;
    UWORD   *Cop5Start;
#endif
    UWORD  SLRepeat;
    UWORD  Flags;
};

/* These CopList->Flags are private */
#define EXACT_LINE 1
#define HALF_LINE 2


struct UCopList
{
    struct UCopList *Next;
    struct CopList  *FirstCopList; /* head node of this copper list */
    struct CopList  *CopList;	   /* node in use */
};

/* Private graphics data structure. This structure has changed in the past,
 * and will continue to change in the future. Do Not Touch!
 */

struct copinit
{
    UWORD vsync_hblank[2];
    UWORD diagstrt[12];      /* copper list for first bitplane */
    UWORD fm0[2];
    UWORD diwstart[10];
    UWORD bplcon2[2];
	UWORD sprfix[2*8];
    UWORD sprstrtup[(2*8*2)];
    UWORD wait14[2];
    UWORD norm_hblank[2];
    UWORD jump[2];
    UWORD wait_forever[6];
    UWORD   sprstop[8];
};

#endif	/* GRAPHICS_COPPER_H */

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