Code density and smaller faster programs, Computer Engineering

Assignment Help:

Q. Code Density and Smaller Faster Programs?

Memory was very expensive in older computer. So there was a need of less memory utilization, which is it was cost effective to have smaller compact programs. So it was opined that instruction set must be more complex so that programs are smaller. But increased complexity of instruction sets had resulted ininstruction sets and addressing modes needing more bits to represent them. It is said that code compaction is significanthowever cost of 10 percent more memory is often far less than cost of reducing code by 10 percent out of CPU architecture innovations.

Smaller programs are beneficialsince they need smaller RAM space. Though today memory is very cheap and this potential benefit today isn't so compelling. More significant small programs must enhance performance. How? Fewer instructions mean fewer instruction bytes to be fetched.

Though problem with this reasoning is that it isn't certain that a CISC program will be smaller than corresponding RISC program. In several cases CISC program represented in symbolic machine language may be smaller however the number of bits of machine code program might not be noticeably smaller. This might result from reason that in RISC we employ register addressing and less instruction that require fewer bits in general. Additionally the compilers on CISCs frequently favour simpler instructions so that conciseness of complex instruction rarely comes into play.


Related Discussions:- Code density and smaller faster programs

Show basic types of transmission technologies, Q. What are the basic types ...

Q. What are the basic types of Transmission technologies, basis on which computer networks will be categorized? Ans: Broadly there are two kinds of transmission technology:

Basic software, Basic Software: The basic software is also referred to...

Basic Software: The basic software is also referred to as utilities. Basic software packages are available for performing operations such as data entry and validation, sorting

Find the average of two values, Q. Find the average of two values? Find...

Q. Find the average of two values? Find the average of two values which are stored in  ; Memory locations named FIRST and SECOND  ; And puts result in memory location AVG

Explain the working of master-slave JK flip flop, With relevant diagram exp...

With relevant diagram explain the working of master-slave JK flip flop. Ans. Master-Slave J-K FLIP-FLOP: A cascade of two S-R FLIP-FLOPS is a master-slave J-K FLIP-FLOP. One

history of databases , Write a four-page paper how relational data solutio...

Write a four-page paper how relational data solution is applied to presnt Video Store business. 1.       Describe Relational Databases   2.       Write History of databases

Computer systems architecture, Assume that you are working in a software co...

Assume that you are working in a software company as a programmer and a bank is your company's client. The Bank is a most popular and one of the leading banks in Malaysia. Your

Engineering and scientific software, Engineering and Scientific Software ...

Engineering and Scientific Software Engineering  and  Scientific  software  has  been  characterized  with "number crunching" algorithms. Application starts from astronomy t

Write an interrupt routine to handle division by zero, Q. Write an interrup...

Q. Write an interrupt routine to handle 'division by zero'? This file can be loaded just like a COM file though makes itself permanently resident until the system is running.

Define parity bit and list its types, Define parity bit and List its types....

Define parity bit and List its types. The most common error detection code used is the parity bit. Parity bit is a extra bit contained with a binary message to make the total n

Write Your Message!

Captcha
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!

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