2. Determine the C, Z, V, S, N flags of the status after the following instructions: 1) LDI R18, 25 CPI R18, Ox25 2) LDI R18, 25 LDI R19, 240 ADD R18, R19
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assembly
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- 2) - Find the contents of register R20 after each of the following codes executed. Also, indicate the state of the Z flag. A) LDI R20, 0 LDI R21, $99 LDI R22, SFF OR R20, R21 EOR R20, R22 COM R20 B) LDI R20, $95 LDI R21, SAA EOR R20, R21Which of the following is true for a semaphore and a mutex variables answer a)Both a semaphore and a mutex is used to protect a critical section only. b)Both a semaphore and a mutex is used for interprocess synchronization only. C)A semaphore is used for interprocess synchronization only and a mutex is used to protect a critical section only. d)A semaphore is used for interprocess synchronization and to protect a critical section whereas a mutex is used to protect a critical section only.3. Consider the following AT&T ISA 32 ASM codes for a C for loop: loop: puahl tabp tenp, tebp 8 (sebp), ecx 12 (tebp), tedx $0, teax Becx, tedx movl movl movl movl cmpl jge .L3 .L6: subl addl addl cmpl jg $1, tecx $1, Bedx $1, teax Sedx, tecx .L6 L3: $1, teax Sebp addl popl ret Based on the assembly code above, (Note: you may only use the symbolic variables x, y, and result in your expressions below – do not use register names.) int loop (int x, int y) int result; result++ ) { for return result;
- Use the following data declarations. Assume that the offset of byte Val is 00000000: .data byte Val sbyte 1,2,3.-7h word Val word 1000h.2000h 3000h, 4000h dwordVal dword 34567890h, 90785634h, 1234674Sh Show the value of the final destination operand after each of the following code fragments has executed: (If any instructions is invalid, indicate "INV" as the answer and briefly explain why) a. moy di 2 mov al, byte Val[di] b. mov bx, word Val mov esi, offset wordVal+4 xchg bx, [esi] R c. movsx cx, byte Val+3 d. mov ax, word ptr [dwordVal mov bl. byte ptr [dwordVal +10] e. mov al, 80h number add al 40h signed ;signed number answer al-= answer bx= answer (show your answer in binary) CX- answer |esi= answer bl= SF=Question 1: For each of the following instruction, give the new destination contents and new setting of CF, SF, ZF, PF, and OF. Suppose that the flags are initially 0 in each part of these questions. a. MOV AL, BL where AL contains 0A1h and BL contains 25h b. ADD AL, BL where AL contains 8Fh and BL contains 091h c. Sub AX, BX where AX contains 0200h and BX contains 9090hLuck again Question 1 The value of EAX will be mov eax,5 sub eax,6 Syllabus. and the Sign flag will have after the following lines execute
- Create the python code to execute arithmetic operation and generate the enable signals for latches and buffers. You should create the following sequences to execute addition and control the Latchesand the Buffers:Procedure: 1. What happens to the status flags as the sequence of instructions is executed MOV AX, 1234H MOV BX, ABCDH CMP AX, BXQ5: (A) Determine the new contents of AX and the carry flag after executing the instructions: RCR AX. I In cach of the following cases ()H AX = E7D9H CF 2) IF AX= 1322 CF-0
- Discussion: 1. What flag condition is tested for by the instruction JNS?1) - Find the contents of register R20 after each of the following codes executed. Also, indicate the state of the Z flag. (a) LDI R20, 0xC5 LDI R21, 0x12 OR R20, R21 b) LDI R20, $89 LDI R21, $76 AND R20, R21QUESTION 7 Convert the following symbolic microoperations into register transfer statements. Maintain the order accordin to the microoperation fields. a. WRITE (F1), ARTPC (F3), ACTDR (F2) b. READ (F2), INCPC (F3), CLRAC (F1) c. ACTDR (F2), DRTAR (F1) For the toolhar. oress ALT+F10 (PC) or ALT+FN+F10 (Mac).