_MyWaitBlit:
  LEA _custom,A0

  BTST.B #DMAB_BLTDONE-8,dmaconr(A0)
  BTST.B #DMAB_BLTDONE-8,dmaconr(A0)
  BEQ .done

.loop:
  BTST.B #DMAB_BLTDONE-8,dmaconr(A0)
  BNE .loop

.done:
  RTS