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/ Almathera Ten Pack 4: Demo 1 / almathera_demo1.bin / sourcecode / dexion / copper eksempel.s < prev    next >
Text File  |  1995-03-17  |  839b  |  60 lines
  1. ; copper exempel til amiga mc
  2. org   $7f000
  3. load  $7f000
  4. run:
  5. bsr getbas 
  6.  
  7. move.l gfxbase,a0
  8. add.l #$32,a0
  9. move.w #$0080,$dff096
  10. move.l #copper,(a0)
  11. move.w #$8080,$dff096
  12. loop:
  13. move.b $dff006,d0
  14. cmp.b #$ff,d0
  15. bne loop
  16. move.w poke+2,d0
  17. swap d0
  18. move.w poke+6,d0
  19. add.l #40,d0
  20. move.w d0,poke+6
  21. swap d0
  22. move.w d0,poke+2
  23. andi.b #64,$bfe001
  24. bne loop
  25. jmp $fc0000
  26.  
  27. copper:
  28. dc.w $0100,$1200
  29. dc.w $008e,$1f81
  30. dc.w $0090,$2ec1
  31. dc.w $0092,$38
  32. dc.w $0094,$d0
  33. dc.w $0108,$0000
  34. dc.w $010a,$0000
  35. poke:
  36. dc.w $00e0,$0000
  37. dc.w $00e2,$0000
  38. dc.w $0182,$000f
  39. dc.w $0180,$0000
  40. dc.w $a801,$ff00
  41. dc.w $0180,$0f00
  42. dc.w $a901,$ff00
  43. dc.w $0180,$0000
  44. dc.w $ffff,$fffe
  45.  
  46. execbase         = 4
  47. oldopenlibrary   = -30-378
  48. even
  49. gfxname:  dc.b "graphics.library",0
  50. even
  51. gfxbase:  dc.l 0
  52.  
  53. getbas:
  54. move.l execbase,a6
  55. lea gfxname,a1
  56. jsr oldopenlibrary(a6)
  57. move.l d0,gfxbase
  58. rts
  59.  
  60.