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Text File  |  1992-08-17  |  1.1 KB  |  31 lines
  1. ; VGA stuff..
  2.  
  3. .MODEL large
  4. .286
  5. LOCALS
  6.  
  7.  
  8.  
  9. MISC_OUTPUT         equ     03c2h   ;Miscellaneous Output register
  10. SC_INDEX                equ     03c4h   ;Sequence Controller Index
  11. GC_INDEX            equ     03ceh   ;Graphics Controller Index
  12. CRTC_INDEX          equ     03d4h   ;CRT Controller Index
  13. MAP_MASK            equ     02h     ;index in SC of Map Mask register
  14. FUN_SELECT            equ        03h        ;index in GC of Rotate/Function Select
  15. READ_MAP            equ     04h     ;index in GC of Read Map register
  16. BIT_MASK             equ        08h     ;index in GC of Bit Mask register
  17. INPUT_STATUS_1      equ     03dah   ;Input Status 1 register
  18. START_ADDRESS_HIGH     equ     0ch        ;bitmap start address high byte
  19. START_ADDRESS_LOW     equ     0dh        ;bitmap start address low byte
  20. UNDERLINE            equ        14h
  21. MODE_CONTROL        equ        17h
  22. MEMORY_MODE            equ     4h
  23. MISCELLANEOUS        equ        6h
  24. GRAPHICS_MODE        equ        5h
  25. OVERFLOW              equ        07h     ; CRTC overflow register index
  26. MAX_SCAN_LINE         equ        09h     ; CRTC maximum scan line register index
  27. LINE_COMPARE          equ        18h     ; CRTC line comp reg. index (bits 0-7 of
  28.                                     ; split screen scan line
  29.  
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  31.