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

What is the role of mar and mdr, What is the role of MAR and MDR? The ...

What is the role of MAR and MDR? The MAR (memory address register) is used to hold the address of the location to or from which data are to be transferred and the MDR(memory d

Learning weights in perceptrons, Learning Weights in Perceptrons In det...

Learning Weights in Perceptrons In detail we will look at the learning method for weights in multi-layer networks next chapter. The following description of learning in percept

What is indirect addressing mode explain, Q. What is Indirect Addressing Mo...

Q. What is Indirect Addressing Mode explain? Indirect Addressing Mode In the indirect addressing modes operands employ registers to point to locations in memory. So it is

Work in standard view, Layout view is helpful for laying out Web pages. How...

Layout view is helpful for laying out Web pages. However you can adjust most of your design elements in Layout view, certain changes should be completed in Standard view. When you

What is direct addressing mode, Computer Organization and Architecture ...

Computer Organization and Architecture 1. Draw the block diagram of von Neumann Architecture and describe about its parts in brief. 2. Draw block diagram of Intel 8085 CPU o

What is requisitepro, Rational RequisitePro is a needed management tool tha...

Rational RequisitePro is a needed management tool that helps project teams control the development process. RequisitePro organizes your requirements by linking Microsoft Word to a

Mention the various IC logic families, Mention the various IC logic familie...

Mention the various IC logic families. Ans. Different  IC Logic Families: Digital IC's are fabricated through employing either the Unipolar or the Bipolar Technologies and are te

Human computer interaction, Preamble The owner of the local shopping mal...

Preamble The owner of the local shopping mall, MaxiMart, has contracted you to assist in the design of an interactive directory. The interactive directory is to be permanently l

How is transaction processing system affected, How is Transaction Processin...

How is Transaction Processing System affect performance of e-commerce sites? Transaction Processing System influences performance of e-commerce sites: Transaction-Processing

Explain what is defecttracker, DefectTracker from Pragmatic Software - D...

DefectTracker from Pragmatic Software - Defect Tracker is a fully web-based defect tracking and hold up ticket system that manages issues and bugs, customer needs, test cases, a

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