(Solved) : 3 25 Points Analyze Assembly Program Consider Following Code Segment Istr String Tested 1s Q44131718 . . .
3. (25 points) Analyze assembly program Consider the following code segment. Istr: .string “You will be tested!” 1strf: .text ; Assemble into program memory. RESET: StopWDT: mov.W mov.W mov.W mov.W mov.W sub.W rra.W add.w mov.b mov.b mov.b dec.W dec.W jnz #_STACK_END, SP ; (2) Initialize stackpointer #WDTPWWDTHOLD,&WDTCTL ; (5) Stop watchdog timer #lstr, R4 #Istrf, R10 R19, R11 R4, R11 R11 #-1, R10 @R4+, R5 (R10), -1(R4) R5, (R10) R10 (1) R11 gnext acceeeecco (1) (2 jmp $ ; jump to current location ‘s’ (endless loop) A. (20 points) What does this program do? Add code comments. B. (5 points) Calculate the total execution time in seconds (before reaching the infinite loop at the end of the program). The numbers in paranthesis specify the number of clock cycles needed for each instruction to execute. Assume the clock frequency is 2 MHz. How many instructions are executed in this program (before reaching the infinite loop)? Show transcribed image text 3. (25 points) Analyze assembly program Consider the following code segment. Istr: .string “You will be tested!” 1strf: .text ; Assemble into program memory. RESET: StopWDT: mov.W mov.W mov.W mov.W mov.W sub.W rra.W add.w mov.b mov.b mov.b dec.W dec.W jnz #_STACK_END, SP ; (2) Initialize stackpointer #WDTPWWDTHOLD,&WDTCTL ; (5) Stop watchdog timer #lstr, R4 #Istrf, R10 R19, R11 R4, R11 R11 #-1, R10 @R4+, R5 (R10), -1(R4) R5, (R10) R10 (1) R11 gnext acceeeecco (1) (2 jmp $ ; jump to current location ‘s’ (endless loop) A. (20 points) What does this program do? Add code comments. B. (5 points) Calculate the total execution time in seconds (before reaching the infinite loop at the end of the program). The numbers in paranthesis specify the number of clock cycles needed for each instruction to execute. Assume the clock frequency is 2 MHz. How many instructions are executed in this program (before reaching the infinite loop)?
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Answer to 3. (25 points) Analyze assembly program Consider the following code segment. Istr: .string “You will be tested!” 1strf: …
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