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

One dimensional array, One dimensional array:  A one-dimensional arra...

One dimensional array:  A one-dimensional array  is a structured collection of elements  that can be accessed individually by specifying the position of a component with  ind

System software, System software: System software helps run the  compu...

System software: System software helps run the  computer hardware and system. It is designed to control the operations of a computer and coordinate all external devices like c

What is raid?explain its levels, Question 1 What is fabric login and what ...

Question 1 What is fabric login and what are its functions Question 2 Explain how is IP SAN different from SAN Question 3 Discuss the product related to Fibre Channel Questio

High level languages, High level languages: High level languages (conv...

High level languages: High level languages (converted to machine code by compiler or equivalent) are much easier to program, as well as to understand. Several high level langu

Question 1 What is fragmentation?, Question 1 What is fragmentation?

Question 1 What is fragmentation?

How Round robin scheduling algorithm is useful than others ?, Round robin (...

Round robin (RR) is one of the simplest, oldest, fairest and most extensively used algorithms. • In the round robin scheduling, processes are posted in a FIFO manner but are given

REMOTE DESKTOP, I WANT TO CONNECT A PC WIYH MY PC THROUGH REMOTE DESKTOP. W...

I WANT TO CONNECT A PC WIYH MY PC THROUGH REMOTE DESKTOP. WHAT I DO TELL ME PLEASE

Elements of cpu, ELEMENTS OF CPU: The CPU is a complex IC chip having ...

ELEMENTS OF CPU: The CPU is a complex IC chip having millions of transistors. As mentioned earlier, a CPU has three major identifiable parts: Control Unit (CU), Arithmetic & l

Files, definition of file operations

definition of file operations

Fms control-display unit, FMS CONTROL-DISPLAY UNIT: The CDU provides a ...

FMS CONTROL-DISPLAY UNIT: The CDU provides a means for the crew to communicate with the FMC.  It contains pushbutton key controllers and a display screen.  The keys are of two

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: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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