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Understanding Machine Instructions Elements, Types

Covers key machine instruction elements—operation code and operand references. Identifies source/destination locations (registers/memory) and explains the purpose of four-address instructions in data operations.

Mason Bennett
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Name: Xannae GumbsClass: Computer ArchitectureAssignment: Chapter 13 Homework1.What are the typical elements of a machine instruction?The typical elements of a machine instruction are Operation code. Source Operand Reference. ResultOperand reference, and Next Instruction Reference.2.What types of locations can hold source and destination operands?The type of locations that can hold source and destination operands are Registers and Memory.3.If an instruction contains four addresses, what might be the purpose of each address?Source Operand 1: The location of the first source operand, from which data will be read, is indicated bythis address.Source Operand 2: The location of the second source operand, from which more data will be read, isindicated by this address.Destination Operand: This address indicates where the operation’s output will be kept.Index or Offset Depending on the addressing mechanism or calculation, this address could be an index,offset, or another value. It can change either the destination addresses or one of the source addresses.4.List and briefly explain five important instruction set design issues.Operation Repertoire: Which operations to offer, in what quantities, and with what level of complexity.Data Types: The different kinds of data that are used for operations.Instruction Format: Bit length, number of addresses, and size of different fields of an instruction.Registers: The quantity of CPU registers that instructions can use and refer to.Addressing: The mode (or modes) used to specify an operand's address.5.What types of operands are typical in machine instruction sets?The type of operands that are typically in machine instruction sets are Numbers. Addresses. Logical Data,and Characters.6.What is the relationship between the IRA character code and the packed decimalrepresentation?The final four bits of the IRA bit pattemOlIXXXXare used to rep resent the numerals 0 through 9 usingthe same four bits as packed decimal.
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