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Text File  |  1991-11-20  |  1KB  |  41 lines
  1.     IFND    GRAPHICS_DISPLAY_I
  2. GRAPHICS_DISPLAY_I    SET    1
  3. **
  4. **    $Filename: graphics/display.i $
  5. **    $Release: 1.3 $
  6. **
  7. **    include define file for display control registers 
  8. **
  9. **    (C) Copyright 1985,1986,1987,1988 Commodore-Amiga, Inc.
  10. **        All Rights Reserved
  11. **
  12.  
  13. * bplcon0 defines
  14. MODE_640    equ      $8000
  15. PLNCNTMSK   equ      $7            * how many bit planes?
  16. *                    * 0 = none, 1->6 = 1->6, 7 = reserved
  17. PLNCNTSHFT  equ      12            * bits to shift for bplcon0
  18. PF2PRI        equ      $40            * bplcon2 bit
  19. COLORON        equ      $0200            * disable color burst
  20. DBLPF        equ      $400
  21. HOLDNMODIFY equ      $800
  22. INTERLACE   equ      4            * interlace mode for 400
  23.  
  24. * bplcon1 defines
  25. PFA_FINE_SCROLL          equ   $F
  26. PFB_FINE_SCROLL_SHIFT equ   4
  27. PF_FINE_SCROLL_MASK   equ   $F
  28.  
  29. * display window start and stop defines
  30. DIW_HORIZ_POS          equ   $7F        * horizontal start/stop
  31. DIW_VRTCL_POS          equ   $1FF    * vertical start/stop
  32. DIW_VRTCL_POS_SHIFT   equ   7
  33.  
  34. * Data fetch start/stop horizontal position
  35. DFTCH_MASK          equ   $FF
  36.  
  37. * vposr bits
  38. VPOSRLOF          equ   $8000
  39.  
  40.     ENDC    ; GRAPHICS_DISPLAY_I
  41.