- published: 03 Jun 2016
- views: 4452
RISC may refer to:
RISC OS /rɪskoʊˈɛs/ is a computer operating system originally designed by Acorn Computers Ltd in Cambridge, England. First released in 1987, it was specifically designed to run on the ARM chipset, which Acorn had designed concurrently for use in its new line of Archimedes personal computers. RISC OS takes its name from the RISC (reduced instruction set computing) architecture supported.
Between 1987 and 1998, RISC OS was bundled with every ARM-based Acorn computer model. These included the Acorn Archimedes range, Acorn's R line of computers (with RISC iX as a dual boot option), RiscPC, A7000 and also prototype models such as the Acorn NewsPad and Phoebe computer. A version of the OS (called NCOS) was also used in Oracle's Network Computer and compatible systems.
After the break-up of Acorn in 1998, development of the OS was forked and separately continued by several companies, including RISCOS Ltd, Pace Micro Technology and Castle Technology. Since then, it has been bundled with a number of ARM-based desktop computers such as the Iyonix and A9home. As of 2012, the OS remains forked and is independently developed by RISCOS Ltd and the RISC OS Open community.
The Raspberry Pi is a series of credit card–sized single-board computers developed in England, United Kingdom by the Raspberry Pi Foundation with the intention of promoting the teaching of basic computer science in schools and developing countries. The original Raspberry Pi and Raspberry Pi 2 are manufactured in several board configurations through licensed manufacturing agreements with Newark element14 (Premier Farnell), RS Components and Egoman. The hardware is the same across all manufacturers.
All Raspberry Pis include the same VideoCore IV GPU, and either a single-core ARMv6-compatible CPU or a newer ARMv7-compatible quad-core one (in Pi 2); and 1 GB of RAM (in Pi 2), 512 MB (in Pi 1 models B and B+), or 256 MB (in models A and A+, and in the older model B). They have a Secure Digital (SDHC) slot (models A and B) or a MicroSDHC one (models A+, B+, and Pi 2) for boot media and persistent storage. In 2014, the Raspberry Pi Foundation launched the Compute Module, for use as a part of embedded systems for the same compute power as the original Pi. In early February 2015, the next-generation Raspberry Pi, Raspberry Pi 2, was released. That new computer board is initially available only in one configuration (model B) and has a quad-core ARM Cortex-A7 CPU and 1 GB of RAM with remaining specifications being similar to those of the previous generation model B+. The Raspberry Pi 2 retains the same US$35 price point of the model B, with the US$20 model A+ remaining on sale. In November 2015, the Foundation launched the Raspberry Pi Zero, a smaller product priced at US$5.
Reduced instruction set computing, or RISC (pronounced 'risk'), is a CPU design strategy based on the insight that a simplified instruction set (as opposed to a complex set) provides higher performance when combined with a microprocessor architecture capable of executing those instructions using fewer microprocessor cycles per instruction. A computer based on this strategy is a reduced instruction set computer, also called RISC. The opposing architecture is called complex instruction set computing, i.e. CISC.
Various suggestions have been made regarding a precise definition of RISC, but the general concept is that of a system that uses a small, highly optimized set of instructions, rather than a more versatile set of instructions often found in other types of architectures. Another common trait is that RISC systems use the load/store architecture, where memory is normally accessed only through specific instructions, rather than accessed as part of other instructions like add
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Description of CISC and RISC architectures, aspects to compare, trade-offs and a few examples.
Computer System Assignment 1 Made by Team L.A.C.K.
In this Video, detailed step by step demonstration is being done on Installing and Configuring RISC OS operating System on Raspberry Pi B+/2 Model. Part- A What is RISC OS and how to download it.. Websites: https://www.raspberrypi.org/downloads/ Click on RISC OS and you will open this website: https://www.riscosopen.org/content/downloads/raspberry-pi Click on the link and you will download it.. Part-B How to Install on SD Card Part-C Booting RISC OS live on Raspberry Pi 2
In this video I rediscover RISC OS. The last time I really used it was in the early 90s at school on the Acorn Archimedes, it has now been ported to the modern ARM machine - The Raspberry Pi. RISC OS is a computer operating system designed in Cambridge, England by Acorn. First released in 1987, its origins can be traced back to the original team that developed the ARM microprocessor. Download RISC OS: http://www.raspberrypi.org/downloads Download Win32 Disk Imager: http://sourceforge.net/projects/win32diskimager/ Follow me on Twitter: http://twitter.com/danwood_uk Add me on Google+: http://gplus.to/danwood My (work in progress) blog: http://kookytech.net
This video is part of a series developed for the Atmel University Program, www.atmel.com/university. Here, Alf-Egil Bogen, AVR MCU inventor, compares RISC and CISC architectures, and discusses how he and his co-inventors tapped into the benefits of both architectures in creating the AVR MCU. Stay connected! Embedded Design Blog: http://www.atmelcorporation.wordpress.com Twitter: http://www.atmel.com/twitter Facebook: http://www.atmel.com/facebook LinkedIn: http://www.atmel.com/linkedin
"The CPU instruction set does not matter. Its the infrastructure that counts"
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(*talking*)
Ghetto Status mayn, yeah
Koopa, know I'm talking bout
An underground soldier baby
Military mayn, hey
[Chamillionaire]
230 thousand dollas not a lot to Rasaq, get out your clock
And time how long it take em, to finish building my spot
I'm the hottest the South has got, if you think Chamillion is not
Swallow the key and throw it out, and just make sure your mouth is locked
Some look up to Pac, and some look up to The Rock
But short is something I'm not, so I don't look up a lot
You wearing a Jacob watch, and fronting like they were rocks
When the Mix Tap Messiah drops, that B-S is finna stop
I'm not gon knock a nigga, for trying to look like he doing it
Be true to it, if you say you doing it and ain't doing it
Then you will get exposed, you know that I'm gonna ruin it
It's foolishness, sip your Hypnotic I hope you cool with it
I'ma expose your cheap, thirty dolla bottle ass niggaz
No brain in your head, cause your head hollow ass niggaz
All you watching TV, I wanna date a model ass niggaz
I wanna go buy a more expensive bottle, than Jigga's ass niggaz
Yep, the tool is kept
But we can take off the gloves, and we can do to death
Don't get it mixed up, my chips up I'm glued to checks
Don't get it switched up with the chicks, cause I'm smooth as Heff
Yep and it ain't nothing better, than money and hoes
Ok I lied about one of those, and one of em's hoes
Two different types of green, yep then one of em grows
Ok both of em grow, but for me it's money from shows, yep
It's the King, Koopa
Hey, hey, hey
[Lew Hawk]
I need a six foot dime, that's gon ride for me
The type of broad if it's heat, she gon lie for me
Stash cake for me, when it's HPD
On my trail trying to see, how the crew get down
22's on the Coupe, that's how the crew get down
Uptown, that's where them niggaz play with K's and tech's
And dump your body in them streets, if it's disrespect
Different sets on channel six, keep these hoochies wet
Different sets of hollow tips, keep these niggaz in check
I make checks from killa flows, that I spit on tour
Coming straight from the heart, from the pain I endure
Locked up in a cage, with no sun for days
Better play them street smart, and try to duck dark days
They say, that sixty grams'll get you two for six
The sixty grams in my clip, can get your wrist on lit
Bracelets with them karats, sparkling nice
Looking like you stuck your fist, in a block of ice
But take advice from a hustla, the cops is sick
I pop a snitch, it's niggaz on the block that snitch
I'm trying to get rich, by shaking all that white in the mix
I stay in the mix hitting licks, cause my grinding to fix
Better fix your frame without, when you speaking on us
It's the triple C Click, and they can't fuck with us
Uh, Lew Hawk, uh
[Rasaq]
It's the young Hooligan, who could fool with him
I kill beats on they two, like this is a pen
Don't make me click-clack, and reload again
Leave your ears are opening, the size of rolling rims
Mouth full of ammo, the black Rambo
Do they want me to spit for em, Cham (man, no)
And your man know, I can go off like a bomb in a land so
Watch where you stand, oh
Judging how the hand glow, if I let the hand slow
The sun will pack in gold, they know
Matter of fact, the flow is so damn hot
I gotta come out the throwback, Ast-ro
Chickens happen to know, how we rap at the show
That's why they the first to come, and the last to go
She the first to come, you the last to know