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Assignment No . 3 - Chapter 1 2 ( 1 0 th edition ) Review Questions: Question# 1 ( Q 1 2 . 1 P
Assignment No Chapter th edition
Review Questions:
Question#Q P
What are the typical elements of a machine instruction?
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Question#Q P
What types of locations can hold source and destination operands?
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Question#Q P
List three possible places for storing the return address for a procedure return.
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Question#Q P
What is the difference between big endian and little endian? Support your answer with examples for the two types.
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Chapter th edition:
Problems:
Problem#P P
A given microprocessor has words of byte. What is the smallest and largest integer that can be represented in the following representations?
a Unsigned
b Signmagnitude.
c Unsigned packed decimal.
d Signed packed decimal.
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Problem#P P
Compare zero one two and threeaddress machines by writing programs to compute X A B CD E F for each of the four machines. The instructions available for use are as follows:
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Assignment No Chapter th edition:
Review Questions:
Question#Q P
What is the advantage of autoindexing?
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Question#Q P
What is the difference between postindexing and preindexing? Provide your answer with examples.
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Question#Q P
What are the advantages and disadvantages of using a variablelength instruction format?
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Chapter th edition:
Problems:
Problem#P P
Let the address stored in the program counter be designated by the symbol X The instruction stored in X has an address part operand reference X The operand needed to execute the instruction is stored in the memory word with address X An index register contains the value X What is the relationship between these various quantities if the addressing mode of the instruction is a direct; b indirect; c PC relative; d indexed?
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Problem#P P
Consider a bit processor in which the following appears in main memory, starting at location :
The first part of the first word indicates that this instruction loads a value into an accumulator. The Mode field specifies an addressing mode and, if appropriate, indicates a source register; assume that when used, the source register is R which has a value of There is also a base register that contains the value The value of in location may be part of the address calculation. Assume that location contains the value location contains the value and so on Determine the effective address and the operand to be loaded for the following address modes:
a Direct b Immediate c Indirect d PC relative e Displacement f Register g Register indirect h Autoindexing with increment, using R
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