What are RISC and CISE?

Operating systems topics

What are RISC and CISE?

Postby Nandika » Sun Apr 01, 2012 11:34 am

Hello my friends,
I like to study about Microprocessor's architecture in simply.Now i want to know about RISC and CISC.i have some small idea about this.i have read Wikipedia articles.But,i cant understand it completely.  :oops:

Please someone tell me about this.Or give links or e-Book which this describe simply.

Thans
User avatar
Nandika
Promo Team
Promo Team
 
Posts: 248
Joined: Sat Oct 15, 2011 6:10 am
Cash on hand: 10,407.80
Location: Galle-Sri Lanka

Invitations sent: 9
Registered friends: 0
Reputation point: 5
Corporal

Re: What are RISC and CISE?

Postby Nipuna » Sun Apr 01, 2012 3:52 pm

We had about these in BIT Semester 1 Computer Systems 1 subject, Even though I don't have a clear idea  :D
User avatar
Nipuna
Promo Team
Promo Team
 
Posts: 2788
Joined: Mon Jan 04, 2010 2:32 pm
Cash on hand: 53,704.00
Bank: 470,602.10
Location: Deraniyagala,SRI LANKA
Medals: 2
EC_Bronze_Star (1) EC_Achievment (1)

Invitations sent: 5
Registered friends: 0
Highscores: 1
Reputation point: 33
Staff Sergeant

Re: What are RISC and CISE?

Postby Nandika » Sun Apr 01, 2012 7:04 pm

User avatar
Nandika
Promo Team
Promo Team
 
Posts: 248
Joined: Sat Oct 15, 2011 6:10 am
Cash on hand: 10,407.80
Location: Galle-Sri Lanka

Invitations sent: 9
Registered friends: 0
Reputation point: 5
Corporal

Re: What are RISC and CISE?

Postby Nipuna » Mon Apr 02, 2012 2:55 am

Try these 2 books I think in these 2 you will fins them.

Computer Organization and Architecture by William stalling
Essentials of Computer Organization and Architecture by Linda Null & Julia Lobur
User avatar
Nipuna
Promo Team
Promo Team
 
Posts: 2788
Joined: Mon Jan 04, 2010 2:32 pm
Cash on hand: 53,704.00
Bank: 470,602.10
Location: Deraniyagala,SRI LANKA
Medals: 2
EC_Bronze_Star (1) EC_Achievment (1)

Invitations sent: 5
Registered friends: 0
Highscores: 1
Reputation point: 33
Staff Sergeant

Re: What are RISC and CISC?

Postby SevenZero » Mon Apr 02, 2012 3:00 pm

Best book for this is . This is the standard university reference.

The major difference is that RISC chips use simpler instructions sets to achieve higher clock frequencies and process more instructions per clock cycle than CISC processors. Typically, CISC chips have a large amount of different and complex instructions. The philosophy behind it is that hardware is always faster than software, therefore one should make a powerful instruction set, which provides programmers with assembly instructions to do a lot with short programs.
In common, CISC chips are relatively slow (compared to RISC chips) per instruction, but use little (less than RISC) instructions. Intel and AMD, for example, develop CISC processors (x86), while Apple and SUN use RISC architecture. Major problem of RISC - they don't afford the widespread compatibility, that x86 chips do.

There is still considerable controversy among experts about which architecture is better. Some say that RISC is cheaper and faster and therefor the architecture of the future. Others note that by making the hardware simpler, RISC puts a greater burden on the software. Software needs to become more complex. Software developers need to write more lines for the same tasks. Therefore they argue that RISC is not the architecture of the future, since conventional CISC chips are becoming faster and cheaper anyway.

RISC and CISC architectures are becoming more and more alike. Many of today's RISC chips support just as many instructions as yesterday's CISC chips. The PowerPC 601, for example, supports more instructions than the Pentium. Yet the 601 is considered a RISC chip, while the Pentium is definitely CISC. Further more, today's CISC chips use many techniques formerly associated with RISC chips.

So simply said: RISC and CISC are growing to each other.
User avatar
SevenZero
Support Team
Support Team
 
Posts: 286
Joined: Sun Nov 01, 2009 3:07 pm
Cash on hand: 201,474.40

Invitations sent: 0
Registered friends: 0
Reputation point: 10
Corporal

Re: What are RISC and CISE?

Postby SemiconductorCat » Tue Apr 03, 2012 5:33 pm

User avatar
SemiconductorCat
 
Posts: 462
Joined: Mon Aug 22, 2011 3:12 pm
Cash on hand: 23,861.30
Location: currently in hyperspace

Invitations sent: 0
Registered friends: 0
Reputation point: 9
Corporal

Re: What are RISC and CISE?

Postby Nandika » Wed Apr 04, 2012 2:57 pm

Thanks both ZevenZero,Sandun and Nipuna,
The ZevenZero's short description is well.
And Sandun's answer is more difficult to understand.However,I understood some using google.but some  :geek:  ;)
I must search others.ZevenZero and Sandun motivate me for it.
Thanx all

I also used following resources,I hope,those will be important to EC readers... :)
I think,i will be able to post later for this topic.
PowerPC601/601v RISC Microprocessor Hardware Specifications

PowerPC
User avatar
Nandika
Promo Team
Promo Team
 
Posts: 248
Joined: Sat Oct 15, 2011 6:10 am
Cash on hand: 10,407.80
Location: Galle-Sri Lanka

Invitations sent: 9
Registered friends: 0
Reputation point: 5
Corporal

Re: What are RISC and CISC?

Postby Nandika » Wed Apr 04, 2012 3:02 pm

User avatar
Nandika
Promo Team
Promo Team
 
Posts: 248
Joined: Sat Oct 15, 2011 6:10 am
Cash on hand: 10,407.80
Location: Galle-Sri Lanka

Invitations sent: 9
Registered friends: 0
Reputation point: 5
Corporal

Re: What are RISC and CISE?

Postby SevenZero » Wed Apr 04, 2012 6:00 pm

User avatar
SevenZero
Support Team
Support Team
 
Posts: 286
Joined: Sun Nov 01, 2009 3:07 pm
Cash on hand: 201,474.40

Invitations sent: 0
Registered friends: 0
Reputation point: 10
Corporal

Re: What are RISC and CISE?

Postby Nandika » Fri Apr 06, 2012 5:07 am

Thank you ZevenZero,
You are correct.my knowledge is not clear.i must improve my knowledge systematically.it's essential for me.thank again your for your advice.
And,i do it for C/C++ now.However,i like to increase my unclear knowledge.it will be clear future with ExpertCore.

I can find book which you said before.but,not now.because,i study C++ now. :)

Thank you
User avatar
Nandika
Promo Team
Promo Team
 
Posts: 248
Joined: Sat Oct 15, 2011 6:10 am
Cash on hand: 10,407.80
Location: Galle-Sri Lanka

Invitations sent: 9
Registered friends: 0
Reputation point: 5
Corporal


Return to Operating Systems

Who is online

Users browsing this forum: No registered users and 0 guests