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Addressing Mode - Intro to Computer Architecture - Homework

Exercises, Computer Architecture

Post: May 6th, 2013
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In the course of intro to computer architecture, the main points are:Addressing Mode, 16-Bit Number, 24-Bit Instruction, Auto-Increment Register-Indirect Addressing Mode, Speed Efficiency, Appropriate Register, Multiplication Technique, Division Technique, Non-Restoring Division
In the course of intro to computer architecture, the main points are:Addressing Mode, 16-Bit Number, 24-Bit Instruction, Auto-Increment Register-Indirect Addressing Mode, Speed Efficiency, Appropriate Register, Multiplication Technique, Division Technique, Non-Restoring Division
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1 1. [add ext blank blank blank ] Semantics: r1 r0 r1 r0 to r0 ’s data with the latter being the LS-byte and the add ext opcode = 001111 2. (a) Design the format of a 24-bit instruction to perform a load word lw+ using the auto-increment incremented) value of r j is to be used for the address of the data word to be obtained from memory. Clearly explain the format and what it means. Next, design the CU states for executing the lw+ instruction. lw+ opcode = 010000 Hint: Just like in the sw instruction from Project 1, the 1st or least significant 2 bytes will have the opcode and other information that the CU needs immediately to start processing the first part of the the initial part is done and loaded into an appropriate register (mdr, ir0, ir1, etc.) so that it enables the 2nd part of the instruction (r j (b) Comment on the speed efficiency of using the 24-bit lw+ instruction above versus using two 16-bit instructions load ind and add imm (you did these in Project 1) to accomplish..

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