25 Show the stack for the following code 000B 120300 LCALL D

25. Show the stack for the following code:

000B   120300           LCALL DELAY

000E   80F0               SJMP BACK             ;keep doing this         

0010  

0010   ;_________ this is the delay subroutine

0300                           ORG 300H

0300               DELAY:

0300   7DFF                          MOV R5, #0FFH      ;R5 = 255

0302   DDFE AGAIN:         DJNZ R5, AGAIN    ; stay here

0304   22                               RET                            ; return

Solution

the stack for the above code is as follows:

000B 120300

000E 80F0

0300 ORG 300H

0300 replaced with 255

0302 DDFE

0304 22