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Introducing the Instruction Set Part 3 - Intellivision Wiki

Introducing the Instruction Set Part 3


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(Call Chaining: Having One Function Return for Another)
(Call Chaining: Having One Function Return for Another)
Line 544: Line 544:
         ENDP
         ENDP
-
Here, we save our return address, then we call out to <CODE>CLRSCR</CODE>.  At the end, <CODE>CLRSCR</CODE> returns to us, and we return to our caller.  This can be made more efficient by having <CODE>CLRSCR</CODE> return directly to our caller for us.  This saves stack space (which is often at a premium) and can save cycles.  Consider the following version of the above example:
+
Here, we save our return address, then we call out to <CODE>CLRSCR</CODE>.  At the end, <CODE>CLRSCR</CODE> returns to us, and we return to our caller.  This can be made more efficient by having <CODE>CLRSCR</CODE> return directly to our caller for us.  This saves stack space (which is often at a premium) and can save cycles.  (This example is clearly not cycle-count sensitive.)
 +
<BR/><BR/>
 +
Consider the following version of the above example:
  ; Delay for a moment and then clear the screen
  ; Delay for a moment and then clear the screen

Revision as of 23:06, 6 November 2007

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