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Text File  |  1991-11-27  |  1KB  |  43 lines
  1.     IFND    GRAPHICS_DISPLAY_I
  2. GRAPHICS_DISPLAY_I    SET    1
  3. **
  4. **    $Filename: graphics/display.i $
  5. **    $Release: 2.04 Includes, V37.4 $
  6. **    $Revision: 37.0 $
  7. **    $Date: 91/01/07 $
  8. **
  9. **    include define file for display control registers
  10. **
  11. **    (C) Copyright 1985-1991 Commodore-Amiga, Inc.
  12. **        All Rights Reserved
  13. **
  14.  
  15. * bplcon0 defines
  16. MODE_640    equ   $8000
  17. PLNCNTMSK   equ   $7            * how many bit planes?
  18. *                    * 0 = none, 1->6 = 1->6, 7 = reserved
  19. PLNCNTSHFT  equ   12            * bits to shift for bplcon0
  20. PF2PRI        equ   $40            * bplcon2 bit
  21. COLORON     equ   $0200        * disable color burst
  22. DBLPF        equ   $400
  23. HOLDNMODIFY equ   $800
  24. INTERLACE   equ   4            * interlace mode for 400
  25.  
  26. * bplcon1 defines
  27. PFA_FINE_SCROLL       equ   $F
  28. PFB_FINE_SCROLL_SHIFT equ   4
  29. PF_FINE_SCROLL_MASK   equ   $F
  30.  
  31. * display window start and stop defines
  32. DIW_HORIZ_POS          equ   $7F     * horizontal start/stop
  33. DIW_VRTCL_POS          equ   $1FF    * vertical start/stop
  34. DIW_VRTCL_POS_SHIFT   equ   7
  35.  
  36. * Data fetch start/stop horizontal position
  37. DFTCH_MASK          equ   $FF
  38.  
  39. * vposr bits
  40. VPOSRLOF          equ   $8000
  41.  
  42.     ENDC    ; GRAPHICS_DISPLAY_I
  43.