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Topic: RISC



  
 RISC - Wikipedia, the free encyclopedia
Reduced Instruction Set Computer (RISC), is a microprocessor CPU design philosophy that favors a smaller and simpler set of instructions that all take about the same amount of time to execute.
Thornton and Cray designed it as a number-crunching CPU (with 74 op-codes, compared with a 8086's 400) plus 12 simple computers called "peripheral processors" to handle I/O (most of the operating system was in one of these).
The most public RISC designs, however, were the results of university research programs run with funding from the DARPA VLSI Program.
http://en.wikipedia.org/wiki/RISC   (4045 words)

  
 RISC - a Whatis.com definition - see also: reduced instruction set computer
RISC (reduced instruction set computer) is a microprocessor that is designed to perform a smaller number of types of computer instructions so that it can operate at a higher speed (perform more millions of instructions per second, or MIPS).
After the introduction of RISC, any "full-set" instruction computer was said to use complex instruction set computing (CISC).
John Cocke of IBM Research in Yorktown, New York, originated the RISC concept in 1974 by proving that about 20% of the instructions in a computer did 80% of the work.
http://search400.techtarget.com/sDefinition/0,,sid3_gci214266,00.html   (443 words)

  
 RISC OS - Wikipedia, the free encyclopedia
RISC OS, which stands for Reduced Instruction Set Computing Operating System is a British Graphical user interface-based operating system for ARM-processor based computers or similar devices.
RISC OS development was halted during the development of OS 4.0, a beta version, OS 3.8, was released to developers.
RISC OS 5 is a separate evolution of RISC OS 3.8 from Castle Technology Ltd for their Iyonix PC line of Acorn-compatibles, which run on the Intel XScale ARM processor.
http://en.wikipedia.org/wiki/RISC_OS   (1016 words)

  
 The Franklin Institute Certficates of Merit - John Cocke
RISC processors and RISC microprocessors are key components of many of the emerging parallel machine designs that are the vanguard of the next generation of computing.
RISC was a fundamentally new concept in computer system design.
Cocke's RISC concept was contrary to the established direction of increasingly complex instruction sets and machines, and was consequently at variance with the dominant ideas of that time.
http://sln.fi.edu/tfi/exhibits/cocke.html   (615 words)

  
 RISC vs. CISC Still Matters
RISC and CISC refer to ISAs, which are abstract models of computer architectures as seen by the programmer.
When the term RISC was introduced a second term was created, Complex Instruction Set Computing, or CISC, which was basically a label applied to the existing popular computer architectures such as the IBM S/370, DEC VAX, Intel x86, and Motorola 680x0.
Unlike most earlier computers, RISC architects fully expected their progeny would only be programmed in high level languages (HLLs), so being a good compiler target was the goal rather than being conducive to assembly language programming.
http://ctas.east.asu.edu/bgannod/CET520/Spring02/Projects/demone.htm   (3537 words)

  
 Deeshaa.com : RISC
The aim of RISC is to address the problems of one such complex nonlinear system — the rural Indian economy — and to outline a solution that addresses the problem of economic growth comprehensively by accomplishing a set of interlinked transitions to a more efficient equilibrium.
RISC follows the logical trend of moving away from vertically integrated institutions to one of horizontal segmentation and specialization.
This is because the subsystems of complex non-linear systems interact strongly with one another, and even the most carefully thought through partial solution often fails to achieve its intended goal.
http://www.deeshaa.com/risc   (830 words)

  
 The RISC OS Products Directory - What is RISC OS 4?
RISC OS-based computers are manufactured by more than one computer manufacturer.
RISC OS does not, however, have any 8-bit legacy problems (Acorn skipped making a 16-bit computer) as when the Archimedes was launched, the 8-bit BBC computer (which used a 6502 microprocessor) was totally emulated in software.
RISC OS is an evolution of Acorn's excellent Machine Operating System as found in the Acorn/BBC computers of the early 1980's.
http://productsdb.riscos.com/admin/riscos.htm   (3884 words)

  
 Ars Technica: RISC vs. CISC: the Post-RISC Era - Page 1 - (10/1999)
RISC was not a specific technology as much as it was a design strategy that developed in reaction to a particular school of thought in computer design.
It fails because RISC and CISC are not so much technologies as they are design strategies--approaches to achieving a specific set of goals that were defined in relation to a particular set of problems.
After charting the historical development of the RISC and CISC design strategies, and situating those philosophies in their proper historical/technological context, I’ll discuss the idea of a post-RISC processor, and show how such processors don't fit neatly into the RISC and CISC categories.
http://arstechnica.com/cpu/4q99/risc-cisc/rvc-1.html   (1404 words)

  
 RISC vs. CISC
The simplest way to examine the advantages and disadvantages of RISC architecture is by contrasting it with it's predecessor: CISC (Complex Instruction Set Computers) architecture.
RISC does the opposite, reducing the cycles per instruction at the cost of the number of instructions per program.
Although RISC chips might surpass Intel's efforts in specific areas, the differences were not great enough to persuade buyers to change technologies.
http://cse.stanford.edu/class/sophomore-college/projects-00/risc/risccisc   (905 words)

  
 High Performance Computing: CISC vs. RISC
RISC is central to HPC because it is the way a computers works with instructions to execute them to go more quickly and is designed, and refined, to go faster, which is necessary for huge and complex applications.
RISC, Reduced Instruction Set Computers did exist, but were less affordable and feasible and were thus considered inferior to CISC because of these faults.
RISC avoided this problem by keeping every instruction at the same length, making it easier for instructions to be pipelined in parallel.
http://www.ccs.neu.edu/groups/honors-program/freshsem/19951996/utopia/risc.html   (583 words)

  
 RISC - Internetnews.com - Webopedia.com
Since the emergence of RISC computers, conventional computers have been referred to as CISCs (complex instruction set computers).
One advantage of reduced instruction set computers is that they can execute their instructions very fast because the instructions are so simple.
Skeptics note that by making the hardware simpler, RISC architectures put a greater burden on the software.
http://inews.webopedia.com/SHARED/search_action.asp?Term=RISC&Template_Name=inews.webopedia.com   (248 words)

  
 RISC Architectures
RISC was also heralded a more quantitative approach to computer architecture, whereby careful experiments preceded the hardware design and sensible performance metrics were used to judge success.
The roots of RISC lie in three research projects: the IBM 801, the Berkeley RISC processor, and the Stanford MIPS processor.
RISC microprocessors have been the standard-bearers of performance, so Intel has embraced ideas from RISC and followed the quantitative approach.
http://www.cs.washington.edu/homes/lazowska/cra/risc.html   (1434 words)

  
 RISC Institute
The Theorema project at RISC is an ongoing project since 1996.
In the frame of Calculemus, RISC is task force leader in task 2.2 and task 3.1.
Moreover, RISC participates in task 1.1 and task 1.2.
http://www.risc.uni-linz.ac.at/people/wwindste/Research/Calculemus/RISC.html   (1232 words)

  
 RISC processor
Encyclopedia: Computers and Computing - Encyclopeadia articles concerning Computers and Computing.
RISC processors can emulate x86 quickly; fast emulation requires both hardware and software techniques.
In the mid-1990s RISC processors began to be used in
http://www.infoplease.com/ce6/sci/A0841981.html   (399 words)

  
 [No title]
The Risc PC range of products will be demonstrated by Acorn, dealers, software and hardware developers.
Founded in 1978, with 1992 revenues of #48.2m, Acorn Computers is the premier supplier of IT solutions to UK education and has been the leading provider of 32-bit RISC based personal computers since 1987.
Acorn Computers Limited is part of the Acorn Computer Group plc, which went public on the USM in 1983.
http://wombat.doc.ic.ac.uk/acorn/doc/risc-pc   (2820 words)

  
 Emulating RISC OS under Windows - OSNews.com
Risc OS is a ROM-based operating system, so it 'boots' in an instant on the original hardware.
I'd better mention straight away that I am by no means a RISC OS expert - most of the information I've picked up has been through trial and error, and hazy memories of many a school lunch-break spent tinkering in the computer labs.
Some of my favourite computers of all time (after the Commodore Amiga and Sinclair Spectrum, of course!) were the RISC-based Archimedes systems produced by Acorn through the early to late 90's, and found in many schools across the UK.
http://osnews.com/story.php?news_id=6170   (967 words)

  
 Open Directory - Computers: Systems: RISC OS
VirtualAcorn - The fully-functional RISC OS emulator for Windows-powered computers.
RISC OS Projects Initiative - Highlights new ideas for programs or projects, or those that might need assistance.
Castle Technology - Owner of the RISC OS copyright, they also manufacture, distribute and develop of Acorn Computers, as well as the acclaimed new Iyonix PC.
http://dmoz.org/Computers/Systems/RISC_OS   (276 words)

  
 Hardware Today: Has RISC Gotten Risky?
The chip is the last in the line of RISC chips HP has developed, and it completes the vendor's transition to an all-x86 architecture.
The idea is to streamline the number of types of computer instructions performed so the CPU will operate at a higher speed.
This led to the IBM PC/XT in 1980 and then the IBM RISC System/6000.
http://www.serverwatch.com/hreviews/article.php/3525901   (730 words)

  
 RISC World on-line
RISC World is the CD-ROM magazine for all users of Acorns and other RISC OS computers.
Not only that but because RISC World comes on a CD we include all the software we mention in our articles.
You won‘t find articles on Linux, hardware that don‘t work under RISC OS or PC software unrelated to RISCOS.
http://www.riscworld.co.uk   (741 words)

  
 PA-RISC 2.0 instruction set architecture (HTML) - HP DSPP
In the mid 1980s, there was much heated discussion on the subject of the RISC (Reduced Instruction Set Computer) versus CISC (Complex Instruction Set Computer) approach to computer architecture and design.
Although it has not yet caught on as a buzzword in the way that RISC has, it can certainly be argued that the term "Precision Architecture" - as in PA-RISC - is actually a much better description of what the design technique known as RISC is all about.
This rather simplistic method of evaluating an architecture (how many different instructions does a machine support) does a general disservice to the concept of RISC and can especially distort the value of mature RISC architectures such as PA-RISC.
http://h21007.www2.hp.com/dspp/tech/tech_TechDocumentDetailPage_IDX/1,1701,959!9!244,00.html   (307 words)

  
 RISCOS.org Homepage
Our software database is probably the most comprehensive repository of RISC OS links anywhere on the internet, and we update it frequently with new releases.
Thousands of applications and utilities are available, often developed by small companies and individual users, mean that you should be able to find software on RISC OS to cater for all your computing requirements.
RISC-OS.net has issued a somewhat difficult challenge of asking the RISC OS community to help build their database up to 10,000 links to RISC OS delelopers and software.
http://www.riscos.org   (641 words)

  
 ABC-Dir: Risc
General introductory information about what was 'Acorn Computers' and their operating system, RISC OS which is now being developed by...
Advice on using RISC OS computers for publishing in Adobe's Portable Document Format on both the Web and paper.
A freeware printed circuit board designer for RISC OS computers, available for download.
http://www.abc-directory.com/view/risc   (256 words)

  
 RISC - Hutchinson encyclopedia article about RISC
RISC microprocessors became commercially available in the mid 1980s and were used mainly in Unix workstations and servers.
They are now widely used in games consoles and laser printers, as well as in microcomputers made by Acorn and Apple Computer.
Because of the low number and the regularity of machine code instructions, the processor carries out those instructions very quickly.
http://encyclopedia.farlex.com/RISC   (152 words)

  
 GroundwaterSoftware.com - RISC: Human Health Risk Assessment and Biodegradation Software
The backward risk calculation refers to calculating a cleanup level for an input value of risk.
An Excel spreadsheet based on the RBCA algorithms that can be used to replicate the tiered RBCA process
Version 4.0 of RISC has new features that give it even greater flexibility in assessing risk for the following scenarios:
http://www.groundwatersoftware.com/software/risk/risc/risc.htm   (497 words)

  
 Course Technology--InfoWeb: RISC
Reading and comparing the descriptions of Intel's 80x86 (Pentium) chips and Motorola's 680x0 chips can help you understand the differences between CISC and RISC chips.
What does a reduced instruction set mean, and are RISC chips really less complex than CISC chips?
Click to see a list of all Computer Concepts 4e InfoWebs.
http://www.cciw.com/content/risc.html   (179 words)

  
 What is RISC?
The IBM 801, Stanford MIPS, and Berkeley RISC 1 and 2 were all designed with a similar philosophy which has become known as RISC.
The first RISC projects came from IBM, Stanford, and UC-Berkeley in the late 70s and early 80s.
Finally, we will discuss some of the recent developments and future directions of RISC processor technology in particular, and processor technology as a whole in general.
http://cse.stanford.edu/class/sophomore-college/projects-00/risc/whatis   (254 words)

  
 Bruce Jacob: RiSC-16 Architecture
RiSC stands for Ridiculously Simple Computer, which makes sense in the context in which the instruction-set is normally used -- to teach simple organization and architecture to undergraduates who do not yet know how computers work.
The architecture has a whopping 8 opcodes, uses 8 registers, and is nonetheless general enough to execute fairly sophisticated programs.
I like the simplicity of the original design much better, but over time I became frustrated by not having an increment function or a quick way to get large addresses into a register.
http://www.enee.umd.edu/~blj/RiSC   (470 words)

  
 AVR 8-Bit RISC from Atmel
Atmel's AVR®; microcontrollers have a RISC core running single cycle instructions and a well-defined I/O structure that limits the need for external components.
Internal oscillators, timers, UART, SPI, pull-up resistors, pulse width modulation, ADC, analog comparator and watch-dog timers are some of the features you will find in AVR devices.
http://www.atmel.com/products/AVR   (124 words)

  
 E-Risc's Home Page
The architecture and all source code are to be released under the GNU General Public Licence (or a slightly modified version that include hardware not just software TBD).
The E-Risc is a project to design and implement a scaleable RISC microprocessor for embedded applications.
Still very much under construction, but you know what it is like when you have just moved in.
http://www.geocities.com/SiliconValley/Chip/5014   (87 words)

  
 Life is a Random Draw: Transforming The Indian Economy
Bridging the ideas gap is a much easier task than ever before.
Scale economies would be significant at each level of the model.
Vinod Khosla and I have proposed a model which harnesses the power of the information and communications technology (ICT) revolution to accelerate rural economic growth.
http://are.berkeley.edu/~atanu/blog/archives/000152.html   (1084 words)

  
 Risc PC Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet
Risc PC Computer Encyclopedia Enterprise Resource Directory Complete Guide to Internet
The Risc PC, released in April 1994, allows a second processor, e.g.
It also offers significantly increased speed with an {ARM610} {RISC} processor and full 24-bit colour graphics support.
http://www.jaysir.com/computer-encyclopedia/r/risc-pc-computer-terms.htm   (78 words)

  
 Reading International Solidarity Centre
debate and information sharing on the NEW RISC bulletin board.
RISC works with schools, community organisations and the public;
Copyright © 2006 RISC, Reading, UK Charity No: 293799
http://www.risc.org.uk   (111 words)

  
 RISC - Glossary - CNET.com
Motorola's PowerPC chip, which is commonly used in Macs, is a RISC chip.
And even the CISC champion, Intel, has used RISC techniques in 486 and Pentium processors.
Additionally, the chip's increased speeds made them ideal for everything from multimedia applications to personal digital assistants.
http://www.cnet.com/Resources/Info/Glossary/Terms/risc.html   (124 words)

  
 RISCOS Ltd
RISC OS 4 licensed to VirtualAcorn for general use.
A compilation of all 16 Issues of Foundation Risc User is also available as the first ever RISC OS DVD.
Pop-up !Printers available for RISC OS 3 and 4 users.
http://www.riscos.com   (282 words)

  
 RISC NEWS Page
Martin Mikhail, who is coordinating the project for RISC said: “The original Georgian sash windows rattle whenever a bus passes!
Rotten sash windows are being replaced and crumbling stonework repaired.
In 1838 George Loveday moved his printing and stationery business into no 39 and set up his celebrated circulating library which become one of the country's largest with over 70,000 volumes.
http://www.risc.org.uk/news   (2684 words)

  
 risc » home
The two acts without websites are Piratio and E+S=B, so here's a bit about them.
The next release on Risc will be a 7" single by Betamax Format, direct metal mastered onto 70g vinyl entirely in the analogue domain and packaged in as-yet-unfinished artwork.
Betamax Format are going to be touring as support to The Wedding Present in Ireland and possibly the UK after the release of the single; more details to come once we know them.
http://www.riscrecords.com   (549 words)

  
 Rhode Island Shoreline Coalition
Summer residents will find RISC a valuable ally in protecting their interests when they are not in residence.
What we seek is fairness, an opportunity to participate in those decisions which affect our lives and property, and the ability to do so.
RISC is a grassroots, advocacy organization designed to represent YOU and others who are tired of watching local, regional, state and federal governments and their agencies, ignore or run roughshod over individual concerns.
http://www.risc-ri.org   (299 words)

  
 PA-RISC 1.1 architecture and instruction set reference manual - HP DSPP
The book covers the RISC characteristics of PA-RISC, PA-RISC processing resources, addressing and access control, control flow, interruptions, and an overview of the instruction set and floating point coprocessor.
The chapters in this HTML document are excerpted from Gerry Kane's book, "PA-RISC 2.0 Architecture," published by Prentice Hall in December, 1995.
http://h21007.www2.hp.com/dspp/tech/tech_TechDocumentDetailPage_IDX/1,1701,958,00.html   (471 words)

  
 RISC
RISC, Inc. Designs and delivers the optimum in Learning Management Systems to provide rapid, effective training solutions for the adaptive organization.
Learn more about Virtual Training Assistant by calling RISC, Inc. today at: 281-480-7910.
RISC, Inc. is excited to announce a new partnership with Jim Kirkpatrick, Ph.D., his father, the legendary Donald Kirkpatrick, Ph.
http://www.risc-inc.com   (54 words)

  
 EUROPA - European Commission - Enterprise & Industry - Chemicals - Competitiveness - RISC databases
Access to the RISC Web Applications is free of charge
EUROPA - European Commission - Enterprise and Industry - Chemicals - Competitiveness - RISC databases
http://europa.eu.int/comm/enterprise/chemicals/competiv/risc/db_en.htm   (113 words)

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