CPU Datapath The following figure shows the overall datapath of the simple 5-stage CPU we have learned. Instruction Instr. Decode Fetch Execute Addr. Calc Memory Access Write : Reg. Fetch Вack Next SEQ PC Noxt SEQ PC Next PC RS1 RS2 MUX3 ZEHO? MUXT MUX4 Imm MUX2 Given a memory load instruction, "mov RO; R1+1000]," please give the input that should pe selected at each multiplexer. You can write "none" for che multiplexers that are not used for this nstruction. Ca) MUX1: [b) MUX2: c) MUX3: d) MUX4: WB Data MEM/WB Mamory MUX EX/ MEM ALU MUX MUX ID/EX Sign Extend Reg File IF/ ID Adder Memory Address <

CPU Datapath The following figure shows the overall datapath of the simple 5-stage CPU we have learned. Instruction Instr. Decode Fetch Execute Addr. Calc Memory Access Write : Reg. Fetch Вack Next SEQ PC Noxt SEQ PC Next PC RS1 RS2 MUX3 ZEHO? MUXT MUX4 Imm MUX2 Given a memory load instruction, "mov RO; R1+1000]," please give the input that should pe selected at each multiplexer. You can write "none" for che multiplexers that are not used for this nstruction. Ca) MUX1: [b) MUX2: c) MUX3: d) MUX4: WB Data MEM/WB Mamory MUX EX/ MEM ALU MUX MUX ID/EX Sign Extend Reg File IF/ ID Adder Memory Address <

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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Pag (A) a dedicated accumulator. All instructions and operands are stored in memory, and are of the same size, consisting of opcode and memory address. If no operand is needed, memory address is 0. The machines instructions are fetched from memory, the opcode is decoded, and then the instruction is executed. Assume that we have a computer with 200 opcodes and a memory address of 10 bits. It This computer has a dedicated accumulator AC, program counter PC, memory address register MA memory buffer register MBR, an instruction register IR, and an arithmetic logic unit. 1. What is the size of opcode in bits? bits 2. What will be the largest number of words in the memory (write in decimal)? words 3. What is the size of the memory word in bits? bits 4. What are the sizes of the following registers in bits? MAR: PC: AC: MBR:
ADDING AND SUBTRACTING The purpose of this assignment is to become familiar with the add and sub instructions. Addin' 'n Subtractin' 1. Assume the following values are stored at the indicated memory addresses and registers: Register %eax Address Value Value Ox500 ØX93FA1C9C Ox500 OXED Ox504 Ox7B %ebx Ox508 Ox79 %ecx Ox7 Ox50C OXF1 %edx OxA Fill in the following table, showing the effects of the indicated instructions, and showing what register (state the smallest unit that is affected) or memory location that would be changed and its new value. Also, show the OF and CF values AFTER the instruction executes. Assume each instruction is independent of the others. In other words, the initial conditions specified above hold for each of the instructions shown below. SHOW ALL VALUES IN HEXADECIMAL. What Changed? (list address or register) Instruction New Value (in hex) OF CF 1. subb $0xA, 12(%eax) 2. subb 8(%eax), %dl 3. addl %ebx, %ebx 4. addl %eсx, (%еаx) 5. addb %d1, 8(%eax) 6. subl %edx,…
Computer architecture
Assume a CPU with a fixed 32-bit instruction length has the following instruction format:opcode mode [operand1] [operand2] [operand3]The mode encodes the number of operands and each operand’s mode. For instance, one mode indicates three registers, another indicates two registers and an immediate datum, another indicates a main memory reference, etc. Assume there are 94 instructions and 22 modes. Answer the following.a. One mode indicates three registers. How many registers can be referenced in this mode?b. One mode indicates two registers and an immediate datum in two’s complement. Assuming there are 32 registers, what is the largest immediate datum that can be referenced?c. One mode has a destination register and a source memory address (an unsignednumber). Assuming 16 registers, what is the largest memory reference available?d. One mode has two memory addresses, both using base displacement. In both, the basesare stored in index registers and the displacements are specified in the…
1. Execute the foiiowing instructions by hand, then find the final centents of X, Y and memory locati $C159 to $C159. Moving a Block of Memory from One Location to Ancther Algorithm Description In this prograH, we want to move the contents of block 1 ($CI00 to $CIO7) to block 2 ($C150 to'? This means that the contents of $C100 (44H) will move to the contents of $C150 and overwrite them and so on. After executing the program, the contents of the two blocks should be same. Remember, when we write any new data over existing data, the latter will be lost and replaced by the new data. MOve.aSm STARTI · EQU $C100 EQU $CI.07 EQU $C150 : END START2 ORG $CO00 #STARTI #START2 ;x points to 1st byte in block 1 :Y points to 1st byte in block 2 ;get data from blockl ;stoře ít in block2 ;incremerit 1st poi.nter ¡increment 2nd pointer ;reached bottom of the b • LDX LDY AGATN LDAA 0,X STAA 0,Y Memory Cido INX - INY CPX #END AGALN ;no, branch 05 37 57 67 BNE END A ¡yes, stop CI04
6. Update memory values for the following code. Keep track of the loop counter (R16) and index register values as you go through the loop. LDI R16,3 R15, Y+ -Z, R15 LOOP: LD ST DEC R16 BRNE LOOP STS 0x0200, R28 CPU Register R28 (YLB) R29 (YB) R30 (ZUB) R31 (ZHB) Value OxFC 0x01 0x04 0x02 Data Memory Value 0x21 0x02 0x11 0x03 Address 0x01FC 0x01FD 0x01FE Ox01FF Ox0200 0x0201 Ox0202 Ox0203
Please give me correct solution.
What four steps are taken by the CPU when an INT instruction is invoked by a program?
15)The execution potion of the LOAD instruction starts with the _. a. going to the mailbox address specified in the instruction he previously read b. reading the number in the mailbox with the address given by the location counter c. going to the mailbox with the address given by the location counter d. fetching the address from the location counter
What is the first action that the CPU does when the INT instruction is executed?
What is the first action that the CPU does when the INT instruction is executed?
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