Exam 21: Microprogrammed Control

A ________________ instruction depends on the following types of information: ALU flags,part of the opcode or address mode fields of the machine instruction; parts of a selected register -- such as the sign bit,and status bits within the control unit.

(Short Answer)

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Question 21

The advantage of horizontal microinstructions is that they are more compact than vertical microinstructions,at the expense of a small additional amount of logic and time delay.

(True/False)

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Question 22

The terms _________ microprogramming are used to suggest the degree of closeness to the underlying control signals and hardware layout.

(Multiple Choice)

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Question 23

Two approaches can be taken to organizing the encoded microinstruction into fields: functional and __________.

(Short Answer)

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Question 24

Microprogramming is the dominant technique for implementing control units in pure _________ architectures due to its ease of implementation.

(Short Answer)

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Question 25

The principal advantage of the use of microprogramming to implement a control unit is that it simplifies the design of the control unit.

(True/False)

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Question 26

The principal disadvantage of a microprogrammed unit is that it will be somewhat slower than a hardwired unit of comparable technology.

(True/False)

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Question 27

The term microprogram was first coined by __________ in the early 1950s.

(Multiple Choice)

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Question 28

The control unit design is very flexible.

(True/False)

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Question 29

To implement a control unit as an interconnection of basic logic elements is a very simple task.

(True/False)

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Question 30

A microprogram consists of a sequence of instructions in a microprogramming language.

(True/False)

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Question 31

The set of microinstructions is stored in the __________.

(Multiple Choice)

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Question 32

It is easier to design in hardware than in firmware.

(True/False)

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Question 33

It is important to design compact,time-efficient techniques for microinstruction branching.

(True/False)

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Question 34

In a ________ microinstruction a code is used for each action to be performed and the decoder translates this code into individual control signals.

(Short Answer)

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Question 35

The _________ is a 32-bit ALU with 64 registers that can be configured to operate as four 8-bit ALUs,two 16-bit ALUs,or a single 32-bit ALU.

(Multiple Choice)

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Question 36

A microprogram is midway between hardware and software.

(True/False)

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Question 37

Reading a microinstruction from the control memory is the same as executing that microinstruction.

(True/False)

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Question 38

A sequence of instructions is known as a ___________,or firmware.

(Short Answer)

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Question 39

The LSI-11 is a good example of a __________ microinstruction approach.

(Short Answer)

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Question 40

Showing 21 - 40 of 45

Exam 21: Microprogrammed Control

A ________________ instruction depends on the following types of information: ALU flags,part of the opcode or address mode fields of the machine instruction; parts of a selected register -- such as the sign bit,and status bits within the control unit.

The advantage of horizontal microinstructions is that they are more compact than vertical microinstructions,at the expense of a small additional amount of logic and time delay.

The terms _________ microprogramming are used to suggest the degree of closeness to the underlying control signals and hardware layout.

Two approaches can be taken to organizing the encoded microinstruction into fields: functional and __________.

Microprogramming is the dominant technique for implementing control units in pure _________ architectures due to its ease of implementation.

The principal advantage of the use of microprogramming to implement a control unit is that it simplifies the design of the control unit.

The principal disadvantage of a microprogrammed unit is that it will be somewhat slower than a hardwired unit of comparable technology.

The term microprogram was first coined by __________ in the early 1950s.

The control unit design is very flexible.

To implement a control unit as an interconnection of basic logic elements is a very simple task.

A microprogram consists of a sequence of instructions in a microprogramming language.

The set of microinstructions is stored in the __________.

It is easier to design in hardware than in firmware.

It is important to design compact,time-efficient techniques for microinstruction branching.

In a ________ microinstruction a code is used for each action to be performed and the decoder translates this code into individual control signals.

The _________ is a 32-bit ALU with 64 registers that can be configured to operate as four 8-bit ALUs,two 16-bit ALUs,or a single 32-bit ALU.

A microprogram is midway between hardware and software.

Reading a microinstruction from the control memory is the same as executing that microinstruction.

A sequence of instructions is known as a ___________,or firmware.

The LSI-11 is a good example of a __________ microinstruction approach.

Basic Concepts and Computer Evolution

Performance Issues

A Top-Level View of Computer Function and Interconnection

Cache Memory

Internal Memory

External Memory

Input Output

Operating System Support

Number Systems

Computer Arithmetic

Digital Logic

Characteristics and Functions

Addressing Modes and Formats

Processor Structure and Function

Reduced Instruction Set Computers

Parallelism and Superscalar Processors

Parallel Processing

Multicore Computers

General-Purpose Graphic Processing Units

Control Unit Operation

Filters