Fundamental differences between risc and cisc architecture, Computer Engineering

Assignment Help:

Q. Fundamental differences between RISC and CISC architecture?

Fundamental differences between RISC and CISC architecture. The following table lists following differences:

CISC

RISC

1.  Large number of instructions - from

120 to 350.

 

1. Relatively fewer instructions - less than 100.

2. Employs a variety of data types and a large number of addressing modes.

2. Relatively fewer addressing modes.

3. Variable-length instruction formats.

3. Fixed-length instructions generally 32 bits, easy to decode instruction format.

4. Instructions manipulate operands residing in memory.

4. Mostly register-register operations. The only memory access is by explicit LOAD/STORE instructions.

5. Number of Cycles Per Instruction (CPI) varies from 1-20 depending upon the instruction. 

5. Number of CPI is one as it uses pipelining. Pipeline in RISC is optimised due to simple instructions and instruction formats.

6. GPRs varies from 8-32. But no support is available for the parameter passing and function calls.

6. Large number of GPRs are available which are mainly used as Global registers and as a register based procedural call and parameter passing stack so optimised for structured programming. 

7. Microprogrammed Control Unit.

7. Hardwired Control Unit.


Related Discussions:- Fundamental differences between risc and cisc architecture

Define far and near procedures, Q. Define Far and Near Procedures? Proc...

Q. Define Far and Near Procedures? Procedure offers the primary means of breaking the code in a program into modules. Procedures have one maindrawbackwhich is they need extra c

Benefits of expert system to the user, a. It improves quality by providing ...

a. It improves quality by providing consistent advice and by making reduction in the error rate. b. Expert systems are reliable and they do not overlook relevant info

Discuss on wbmp, Question 1 How to call a WML Script from a WML page Q...

Question 1 How to call a WML Script from a WML page Question 2 Discuss on the following WML Script data type Question 3 Discuss on the following WML script statements

Explain segment registers in bus interface unit, Q. Explain Segment Registe...

Q. Explain Segment Registers in bus interface unit? These are very significant registers of CPU. Why? We will answer this later. In 8086 microprocessor memory is a byte organiz

Illustrate about object oriented development, Illustrate about object orien...

Illustrate about object oriented development object oriented development is not direct way of system development as in this approach a holistic view of application domain is co

What is dom, DOM is the Document Object Model (DOM) which is an interface s...

DOM is the Document Object Model (DOM) which is an interface specification handled by the W3C DOM Workgroup that explains an application independent mechanism to access, parse, or

Determine the order in which optimized c-scan would service, Consider the s...

Consider the situation in which the disk read/write head is currently located at track 45 (of tracks 0-255) and moving in the positive direction. Assume that the following track re

Find the simplified function f and implement, Q. F'(a,b,c,d) = (a + b + d')...

Q. F'(a,b,c,d) = (a + b + d')(a + c' + d')(a + b' + c') d'(a,b,c,d) = (a + b' + c + d')(a' + c' + d')(a' + b + d) Find the simplified function F and implement it using NOR Ga

Why a linked list is called a dynamic data structure, Why a linked list is ...

Why a linked list is called a dynamic data structure? What are the advantages of using linked list over arrays?    A linked list is known as a dynamic data structure because it

Deta sturcture, algorithm of travalling salesman problam

algorithm of travalling salesman problam

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