User Account

All Pages

Computer system architecture, Basic Computer Science

Assignment Help:
1.
Suppose that the meaning of the BUN instruction of the Basic Computer is changed to implement the relative addressing mode, i.e PC <- PC + AR instead of PC<- AR.

a) Write an optimal operation sequence to implement the new version, but make sure that the value of AC is not changed at the end of your implementation.
b) Is it possible to write an operation sequence to implement the new version such that, at the end of the implementation, the values AC and DR are unchanged? If yes, write such an optimal sequence. Otherwise justify why it is not possible.

2.
Write an optimal sequence of control microinstruction to implement the following register transfer:

x: AR<- AR +DR, DR <- DR + 1

Your solution should use the minimum number of cycles and it should leave AC unchanged: You may assume that AC contains an 11-bit quantity.

3.
Archie Tecture has to write Basic Computer code that contains lots of "spinning loops" of the form:
Loop: ISZ A
BUN loop
Other code….

He believes that all his "spinning loops" will run faster if he reimplements them once he makes the following changes to the basic computer.

- Add a register to the bus system CTR(count register) to be selected with S1=0
- Replace the ISZ instruction with an instruction that loads a value into CTR:
LDC Address CTR<- M[Address]
- Add a register reference instruction ICSZ with the semantics: Increment CTR and skip next instruction if zero.

Answer the following:

a) Using as a model table 5-6, write the register transfer statements for the new instruction ICSZ and LDC
b) Is Archie correct assuming that all his "spinning loops" will run faster once he reimplements them using the next instruction? Justify carefully your answer.

4.

Most machines have a shift left unit attached to the ALU. Using 4x1multiplexors and D-flip-flops, design a 4-bit shifter that accommodates these four operations: no shift, Circular shift left, logical shift right, and Circular shift right. The most significant bit is the sign bit.

Related Discussions:- Computer system architecture

Describe Priority Scheduling algorithm of operating system?, Priority Sched...

Priority Scheduling • The fundamental idea is straightforward: each process is assigned a priority, and priority is permitted to run. Equal-Priority processes are scheduled in FCF

Describe any five requirements of clustering in data mining, Question 1...

Question 1 What is data mining? What are the major issues in data mining? Explain 2 What is meant by data reduction? Explain any three techniques of data reduction 3 Define a b

Two degree of freedom system with matlab program, solution of two degree of...

solution of two degree of freedom system with matlab program???

Input devices, Input Devices: i)  Keyboard is the most common form of ...

Input Devices: i)  Keyboard is the most common form of input devices. It was originally designed in the last century. Since then, only minor improvements have taken place in k

Basic parts of a computers, The basic parts of a computers are shown in Fig...

The basic parts of a computers are shown in Figure.   Input devices such as a keyboard, mouse or scanner are used to enter input (data and/or instructions), directly

Netbooks, Netbooks: Netbooks are special type of Laptop which is very ...

Netbooks: Netbooks are special type of Laptop which is very  light and small. Due to its size and weight it is very portable and one may carry it very easily. Dissimilar to La

What is i-node number, Question 1 Bring out the advantages of Linux Ope...

Question 1 Bring out the advantages of Linux Operating systems Question 2 Match the Symbols with their respective file types              Symbol               File N

C++ programming, write a program of 2 sum and 2 product number in C++ progr...

write a program of 2 sum and 2 product number in C++ programming language

Factors and criteria for computer, what are the factors and criteria for co...

what are the factors and criteria for computer (from business point of view)?

Explain CPU scheduling and its objectives?, Definition of CPU scheduling: T...

Definition of CPU scheduling: The assignment of physical processors to processes allows processors to complete work. The process of determining that for which process which pro

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd