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

Which important terminal required between dte and pstn, An important termin...

An important terminal that is required between DTE and PSTN is (A)  Server                                      (B) MODEM (C)  Relay

Find out the hexadecimal sum, Find the hex sum of (93) 16 + (DE) 16 ? Ans...

Find the hex sum of (93) 16 + (DE) 16 ? Ans. Hex Sum of (93) 16 + (DE) 16 Convert Hexadecimal numbers 93 and DE to there binary equivalent demonstrated below:- Hence (9

Define ufd and mfd, Define UFD and MFD.   In the two-level directory st...

Define UFD and MFD.   In the two-level directory structure, every user has own user file directory (UFD). Every UFD has a same structure, but lists only the files of a single u

Programs, A palindrome is a string that reads the same from both the ends. ...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Name some popular storage devices, Name some popular storage devices In...

Name some popular storage devices In contrasts with storage, which 1) retains data and programs irrespective of whether they are currently in use or not, (2) retains data

Write short note on quantization, Write short note on Quantization. Qua...

Write short note on Quantization. Quantization: This is the first step in PCM. The whole amplitude range of the modulating signal is divided in a number of standard levels term

Flynns categorization, Normal 0 false false false EN-US...

Normal 0 false false false EN-US X-NONE X-NONE

How are control signals achieve the particular operation, Q. How are contro...

Q. How are control signals achieve the particular operation? The control signals are applied directly as binary inputs to the logic gates of the logic circuits. All these input

Explain about fat - inode, Q. Explain about FAT - Inode? Today modern P...

Q. Explain about FAT - Inode? Today modern PC comprises total capacity of nearly 40GB for storage of program and data Due to this huge capacity in place of having just one oper

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