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Text File  |  2001-02-09  |  645 b   |  27 lines
  1. ;+
  2. ;  Oct 22 1990    ml.    Created this.
  3. ;-
  4.  
  5. ; BLiTTER base address
  6.  
  7. bBLiTTER    equ    $ff8a00
  8.  
  9. ; BLiTTER register offsets
  10.  
  11. SRCXINC        equ    $20    ; SouRCe X INCrement
  12. SRCYINC        equ    $22    ; SouRCe Y INCrement
  13. SRCADDR        equ    $24    ; SouRCe ADDRess
  14. ENDMASK1    equ    $28    ; ENDMASK 1
  15. ENDMASK2    equ    $2a    ; ENDMASK 2
  16. ENDMASK3    equ    $2c    ; ENDMASK 3
  17. DESTXINC    equ    $2e    ; DESTination X INCrement
  18. DESTYINC    equ    $30    ; DESTination Y INCrement
  19. DESTADDR    equ    $32    ; DESTination ADDRess
  20. XCNT        equ    $36    ; X CouNT
  21. YCNT        equ    $38    ; Y CouNT
  22. HOP        equ    $3a    ; Halftone OPerations
  23. OP        equ    $3b    ; logic OPerations
  24. BUSY        equ    $3c    ; register that has the BUSY bit
  25. SKEW        equ    $3d    ; SKEW
  26.  
  27.