rom/graphics/cmove.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function CMove()
   6     Lang: english
   7 */
   8 #include <exec/types.h>
   9 #include <graphics/copper.h>
  10 #include "graphics_intern.h"
  11
  12 /*****************************************************************************
  13
  14     NAME */
  15 #include <proto/graphics.h>
  16
  17         AROS_LH3(void, CMove,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(struct UCopList *, ucl,   A1),
  21         AROS_LHA(void *           , reg,   D0),
  22         AROS_LHA(WORD             , value, D1),
  23
  24 /*  LOCATION */
  25         struct GfxBase *, GfxBase, 62, Graphics)
  26
  27 /*  FUNCTION
  28         Add a copper move instruction to the given user copper list.
  29         The copper is told to move a value to register reg.
  30         If you are using CMOVE() a call to CMove() and CBump() will
  31         be made.
  32
  33     INPUTS
  34         ucl   - pointer to a UCopList structure
  35         reg   - hardware register
  36         value - 16 bit value to be moved to the hardware register
  37
  38     RESULT
  39
  40     NOTES
  41
  42     EXAMPLE
  43
  44     BUGS
  45
  46     SEE ALSO
  47         CINIT CWAIT CEND graphics/copper.h
  48
  49     INTERNALS
  50
  51     HISTORY
  52
  53 *****************************************************************************/
  54 {
  55   AROS_LIBFUNC_INIT
  56   AROS_LIBBASE_EXT_DECL(struct GfxBase *,GfxBase)
  57
  58   struct CopIns * copIns = ucl->CopList->CopPtr;
  59   copIns->OpCode = COPPER_MOVE;
  60   copIns->u3.u4.u1.DestAddr = (WORD)(ULONG)reg;
  61   copIns->u3.u4.u2.DestData = value;
  62
  63   AROS_LIBFUNC_EXIT
  64 } /* CMove */