Assume that registers $s0, and $s1 hold the value 0x80000000 and 0×D0000000, respectively. (0x: means a hexadecimal number) a. What is the value of $t0 after execution of the following instruction? Do we have overflow here? Explain your reasoning. add $t0, $s0, $s1 b. What is the value of $t0 after execution of the following instruction? Do we have overflow here? Explain your reasoning. sub $t0, $s0, $s1

Assume that registers $s0, and $s1 hold the value 0x80000000 and 0×D0000000, respectively. (0x: means a hexadecimal number) a. What is the value of $t0 after execution of the following instruction? Do we have overflow here? Explain your reasoning. add $t0, $s0, $s1 b. What is the value of $t0 after execution of the following instruction? Do we have overflow here? Explain your reasoning. sub $t0, $s0, $s1

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Fill in the following blanks with appropriate answers 1. The instruction that subtracts 1 from the contents of the specified register/memory location is ........... 2. In general, the destination operand of an instruction can be 3. The instruction that supports addition when carry exists is 4. If there is a carry from lowest nibble during addition, 5. flag sets. register is used as a default counter in case of string and loop instructions. 6. In PUSH instruction, after each execution of the instruction, the stack pointer is ..........
9. Write a sequence of LEGV8 instructions to do the following: set X8 to 100 if the contents of X1 is an odd number and set X9 to 200 otherwise. Do not use division instruction in you code. Instead, you use an AND instruction to test if a number is even or odd. Comment your assembly code. 10. Write the corresponding LEGV8 code for the following fragment of C code for (int i=0; i<50; ¡++) C=C[i-1]-C[i+1]*9; Assume that the index i is in register X0, C is an integer array and the base address of C is in X2. Comment your assembly code. How many instructions are executed? How many data memory references have been made? I
Write output for the following programs. Also write briefly after each instruction in main(), how output is achieved.
Q4/ A- write a program to count number of one's & zero's in a number stored at 0200:0010, use rotate instruction, store the result in the memory location 0200:0011 and 0200:0012 respectively. B- 1. What is segmentation? What are its advantages? How is segmentation implemented in typical microprocessors? 2- What is the difference between near call and far call?
Q7. are 0, 0, 1, and 0, respectively. Find the value of the N, Z, C, V flags of the following instructions (assume each instruction runs individually, i.e., these instructions are not part of a program). Suppose r0 = 0XFFFFFF00, and r2 = 0x00029 F05 in a 32-bit system. Initially the N, Z, C, V flags ADD r3, r0, r2 SUBS r3, ro, r0 а. b. ADDS r3, r0, r2 LSL r3, r0, #1 С. d.
Read the following code carefully to answer what it does: START: MOV SI, 0300 MOV DI, 0302 MOV AX, (SI) ADD (DI), AX STOP: HLT Select one: a. None of the above O b. CLC instruction should be added to the beginning of the program c. The content of destination word does not change O d. Adding two words. Result in 0301H & 0302H O e. Adding two words. Result in 0302H & 0303H
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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 X19, X20, X21, X22, and X23, respectively. What is the compiled LEGv8 code?
[Note: You are allowed to use only instructions implemented by the actual MIPS hardware provided in attached photos below. Use assembly language format from the references or the book. Note, base ten numbers are listed as normal (e.g. 23), binary numbers are prefixed with 0b and hexadecimal numbers are prefixed with 0x.] What is the single MIPS instruction, or if not possible, the shortest sequence of MIPS instructions that performs: 1. Move content of register r11 into register r23. 2. Load register r15 with the value 265,140. 3. Store the value 55,259 into a word at memory location 40000. 4. The equation a = b + c,assuming a, b and c are integer variables at memory location 0b10000000, 0b1001000 and 0b100010011100, respectively. 5. The equation y[5] = y[10] + x, assuming x corresponds to register r2, and y[1] is an integer at the memory location 524,292 is the first element of vector y. 6. The statement: if (a <= b) goto lab1, assuming that variable a corresponds to the word at…
-Two word wide unsigned integers are stored at the physical memory addresses 00A00 and 00A02, respectively. Write an instruction sequence that computes and stores their sum, difference, product, and quotient. Store these results at consecutive memory locations starting at physical address 00A10 in memory. To obtain the difference, subtract the integer at 00A02 from the integer at 00A00. For the division divide the integer at 00A00 by the integer at 00A02. Use the register indirect relative addressing mode to store the various results.
26. Find the time delay in the following program if the crystal frequency is 1 MHz. Do not ignore the time delay due to the first and last instruction. DELAY: LDI R16, 30 AGAIN: LDI R17, 35 HERE: NOP NOP DEC R17 BRNE HERE DEC R16 BRNE AGAIN RET
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