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Assembly Source File  |  1980-02-04  |  352 b   |  13 lines
  1.  
  2. *
  3. * Vertb_a.asm - assembler vertical blank server
  4. * Passed is_Data pointer in A1 (pointer to counter in C code above)
  5. *
  6.         XDEF    _VertBServer
  7.         section code
  8. _VertBServer:
  9.         ADDI.L  #1,(A1) ;increment the counter is_Data points to  
  10.         MOVEQ.L #0,D0   ;set Z flag to continue to process other vb-servers
  11.         RTS
  12.         END
  13.