3. Assume $s1 = 0xefbcad97, $s2 = 0x6521fedc, calculate and $s0,$s1,$s2 or $s0,$s1,$s2 xor $s0,$s1,$s2 nor $s0,$s1,$s2 What will be content of $s0, after the execution of each instruction?
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- 6. What is the address of executing the following instruction: MOV CX, [FEH] if you know that DS= DC00H? OCL: DCOFEH, CH: DCOFFH OCL: DCFEH, CH: DCFFH CL: DCFFH, CH: DCFFH CL: DCOFFH, CH: DCOFFHWhat the code below does? Consider the following code used to implement a new instruction: foo $t3,$t1,$t2: mask : . word 0xFFFFF83Fs t a r t : l a $t0 , masklw $t0 , 0 ( $ t 0 )l a $t3 , s h f t rlw $t3 , 0 ( $ t 3 )and $t3 , $t3 , $ t 0a ndi $t2 , $t2 , 0 x 0 0 1 fs l l $t2 , $t2 , 6o r $t3 , $t3 , $ t 2l a $t5 , s h f t rsw $t3 , 0 ( $ t 5 )s h f t r : s l l $t3 , $t1 , 0 What does foo does?What the code below does? Consider the following code used to implement a new instruction: foo $t3,$t1,$t2: mask : . word 0xFFFFF83Fstart : la $t0 , masklw $t0 , 0 ( $ t 0 )la $t3 , s h f t rlw $t3 , 0 ( $ t 3 )and $t3 , $t3 , $ t 0andi $t2 , $t2 , 0 x 0 0 1 fsll $t2 , $t2 , 6or $t3 , $t3 , $ t 2la $t5 , s h f t rsw $t3 , 0 ( $ t 5 ) shftr: sll $t3 , $t1 , 0 What does foo does?
- 10 Execute the following instruction. What will be the new value of the lowest byte of memory content after execution? Assume: DS= 9406H, BX=FDFAH, AX=F401H, SS= A300H, BP = OE61H, SI = 77A2H, SP= E60H PUSH SI * O 77 H 27 H None 7AH A7 H A2 H 72 HThis problem is adapted from an earlier edition of P&H, and should be submitted.Consider the following code used to implement a new instruction: foo $t3,$t1,$t2:mask : . word 0xFFFFF83Fs t a r t : l a $t0 , masklw $t0 , 0 ( $ t 0 )l a $t3 , s h f t rlw $t3 , 0 ( $ t 3 )and $t3 , $t3 , $ t 0a ndi $t2 , $t2 , 0 x 0 0 1 fs l l $t2 , $t2 , 6o r $t3 , $t3 , $ t 2l a $t5 , s h f t rsw $t3 , 0 ( $ t 5 )s h f t r : s l l $t3 , $t1 , 0Add meaningful comments to the code and write a brief (2 sentence max) description of what foo does. Thisis not the same as saying how it does it - e.g., when asked to describe what a pedestrian is doing, you wouldsay they are walking, not that they are ilfting their left leg, angling it forward, putting it down, . . ..State at least one reason why writing “self-modifying code” such as this is a bad idea (and often times notactually allowed by the operating system)?Q1: Consider two computers, P1 and P2, of the same instruction set (ISA). We have a program of 7.5x10° instructions and we want to run this program on P1 and P2. The P1 computer is a 5 GHz machine with CPI of 0.8. The P2 computer is a 6 GHz machine with CPI of 1.2. Which computer is faster?
- Select the correct Value of CL and DL registers after execution of below given program. MOV AL, B2 MOV BX, 0000 MOV CL, [0001] MOV AX, BX MOV DL,[BX+1] INT 7 0090:0000 DB AC, 7E, 3B a. CL = 7E and DL = 7E O b. CL = AC and DL = AC O c. CL = 3B and DL = 3B O d. CL = AC and DL = 7E21. The program that follows implements what is known as a delay loop. MOV CX, 1000H DLY: DEC CX NOP JNZ DLY NXT: (a) How many times does the JNZ DLY instruction get executed? (b) Change the program so that JNZ DLY is executed 17 times.It is the compiler's job to associate program variables with registers. Take, for instance, the assignment statement from our earlier example: f = (g + h) (i+j): The variables f, g, h, i, and j are assigned to the registers X 19, X20, X21, X22, and X 23, respectively. What is the compiled LEGV8 code?
- Question 5 Execute the following instruction by the following Super Scalar and show the execution of Inorder Issue & Out of Order completion (the same color is depedent) Div Mul Lw Sw Add Div Стр MulVariable A contains the value 0x01. What will be the content of the Z status bit after execution of the following instruction? movf A, W Z = [?]Q2. Refer to datapath design on slide no. 26 with added blocks for jump instructions as shown in slide 33 in Chapter 4 (part 1). Let's assume a program has 500 instructions. These instructions are distributed as follows: R-Type 25% Immediate arithmetic (addi) 5% Load 20% Store 20% Branch 10% Jump 20% Answer the following questions (show calculations): a) How many instructions will use instruction memory? b) How many instructions will use data memory? c) How many instructions will use the sign extend block? d) In the clock cycles, where the sign extend block is not required, does it remain idle? If yes, how? If not, what happens to the output of the block in that cycle?