Loops/Downward for: Difference between revisions

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 Code is called as a subroutine, i.e. "JSR ForLoop." OS/Hardware specific printing subroutines are unimplemented here.
 <lang 68000devpac>ForLoop:
-MOVE.B #10,D0
+MOVE.W #10,D0
-MOVE.W #9,D1           ;DBcc operates at word length so we need to clear the upper byte of the word.
 loop:
 JSR Print_D0_As_Ascii  ;some routine that converts the digits of D0 into ascii characters and prints them to screen.
+DBRA D0,loop           ;repeat until D0.W = $FFFF
-SUBQ.B #1,D0
-DBRA D1,loop           ;repeat until D1.W = $FFFF
 rts</lang>