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rence guide mergers aquisitions spin offs k6 2 cpu id guide via c3 cpu overview uli m6117c embedded 80386sx overclocking eastern bloc cpu guide cpu socket id guide mediagx and geode cpu guide cyrix id cpu guide intel rapidcad cpu datasheet archive january 28th 2018 by admin cpu of the day tandem clx 800 it takes 2 to tango tandem clx 800 processor vlsi cmos 1u process 16mhz tandem computers was established way back in 1974 and was one of the first if not the first dedicated fault tolerant computing companies they designed completely custom computers designed for use in high reliability transaction processing environments these were used for support of stock exchanges banks atm networks telephone communications interchanges and other areas where a computer failure would result in significant costly disruptions to business services tandem was started by james treybig formally of hp and a team he lured away from hp s 3000 computer line tandem computers are designed to do two things well fail over quickly when a failed part is detected this means that if a faulty processor or memory element is found it can be automatically disabled and processing continues uninterrupted on the rest of the system the other design element that tandem perfected was allowing the computer to find and isolate intermittent problems if a processor or storage element ceases to work that is relatively easy to figure out but if a processor is glitchy causing errors only occasionally that can be much harder to find and can result in serious problems for the user this is known as fast fail and today is a pretty standard concept find the error catch it and prevent erroneous data from ever making it back into the database tandem computers were designed from the ground up to be fault tolerant disks were mirrors power supplies busses tandem clx 600 pcb click for larger processors all were redundant but unlike some other systems components were not kept as hot spares sitting idle until something failed this kept hardware from being wasted under normal operation if it was in the system it was contributing to system performance a failed component then would reduce system performance until it was replaced fixed but a customer would not be paying for hardware that served them no purpose unless something broke to support these goals tandem designed their own processors and instruction set architecture know as tns tandem nonstop the first processors were a 16 bit design call the t 16 later branded nonstop i made out of ttl and sram chips spanning 2 pcbs performance was around 0 7mips in 1976 they were a stack based design similar to the hp3000 with added registers as well t 16 systems supported 2 16 processors nonstop ii released in 1981 was similar but supported the occasional 32 bit addressing increasing accessible memory form 1 to 2mb per cpu and performance to 0 8mips the 1983 introduction of txp saw a great performance improvement up to 2 0 mips but kept the same form factor the processor was implemented in ttl with the addition of many pals and added much better support for 32 bit addressing in 1986 the nonstop vlx was released which moved to an ecl based processor this was a full 32 bit design running at 12mhz 3mips but still using discrete components and a new bus system as well this was to be the high end of the nonstop line it was fast reliable and rather large the desire for a more economical system to fit the needs of smaller customers led to a first for tandem read more tags hp itanium mips tandem vlsi posted in cpu of the day june 5th 2017 by admin sifive fe310 setting the risc free sifive fe310 risc v processor early lsi sparc processor for size comparison both are based on u c berkeley risc designs the idea of risc reduced instruction set computer processors began in education specifically university of california berkeley in the early 1980 s and it was out universities that some of the most famous risc designs came mips still in use today started life as a project at stanford university and sparc made famous by sun and now made by oracle and fujitsu started life as a berkeley university project universities have continued to work with risc architectures for research and teaching the simplicity of risc makes them an ideal educational tool for learning how computers processors function at their basic levels by the late 1980 s risc had begun to become a commercial revolution with nearly every player having their own risc design amd 29k intel i960 hp pa risc weitek xl8000 mips sparc arm hitachi sh risc ibm power and others offered their take on the risc design most were proprietary while a few were licenseable none were open architectures for anyone to use unfortunately outside of the university risc processors are not as simple the architectures and their use may be but licensing them for the design is not it can often take more time and effort to license a modern risc processor then it does to actually implement it the costs to use these architectures both in time and money often prohibit their very use sifive fe310 sample donated by sifive full 32 bit risc on a 7 2mm 2 die in a 36mm 2 package it is out of this that sifive began sifive was founded by the creators of the first commercially successful open risc architecture known as risc v risc v was developed at berkeley fittingly in 2010 and was designed to be a truly useful general purpose risc processor easy to design with easy to code for and with enough features to be commercially useful not limited to the classroom it is called the risc v because it is the fifth risc design developed at berkeley risc i and risc ii being designed in 1981 followed by soar smalltalk on a risc in 1984 and spur symbolic processing using risc in 1988 risc v has already proved to be a success it is licensed freely and in a way bsd license that allows products that use it to be either open or proprietary one of the more well known users is nvidia which announced they are replacing their own proprietary falcon processors used in their gpus and tegra processors with risc v samsung qualcomm and others are already using risc v these cores are often so deeply embedded that their existence goes without mention but they are there working in the background to make whatever tech needs to work work the risc v architecture supports 122 instructions 98 of which are common to almost all prior risc designs and 18 common to a few six completely new instructions were added to handle unique attributes of the architecture using a 64 bit performance register in a 32 bit arch and to support a more powerful sign injection instruction which can be used for absolute value among other things it uses 31 32 bit registers register 0 is reserved for holding the constant 0 with optional support for 32 floating point registers true to the risc design it is a pure load store processor the only accesses to memory are via the load store instructions intel 4004 with 5 sifive risc processors the 4004 was meant for a calculator the fe310 is meant for whatever your mind may dream up sifive is unique among risc ip companies they not only license ip but also sell processors and dev boards the fe310 freedom everywhere 310 is a 320mhz risc v architecture with 16k of i cache and 16k of scratchpad ram fabbed by tsmc on a 180nm process even on this process which is now a commodity process the fe310 s efficient design results in a die size of only 2 65mm x 2 72mm on a standard 200mm wafer this results in 3500 die per wafer greatly helping lower the cost its an impressive chip and one that is completely open source what is more impressive is licensing sifive cores it is a simple and straightforward process the core 32 bit e31 or 64 bit e51 can be configured on sifive s site with pricing shown as you go the license is a simple 7 page document that can be signed and submitted online pricing starts at 275 000 and is a one time fee there are no continuing royalty payments the entire process can be completed in a week or less in comparison arm the biggest licensor of risc processors does not publish pricing charges 1 2 royalties on every chip made and has a license process that can take over a year the base fees start at around 1 million and go into the 10 s of millions depending on how you want to use the ip where it will be and for how long for many small companies and users this is simply not feasible and it is these smaller users that sifive wishes to work with licensing a processor for the next great tech should not be the hurdle that it has become many great ideas never make it to fruition due to these roadblocks we look forward to finding sifive processors and cores in all sorts of products in the future thanks to sifive for their generous donation of several fe310 processors to the cpu shack museum tags arm mips risc sifive sparc posted in cpu of the day february 27th 2014 by admin the unlikely tale of how arm came to rule the world bloomberg business week recently published an interesting article on arm s rise to power in the processing world there first major design win was a failed product known as the apple newton yet they would go on to become a powerhouse that is no challenging intel in arm s formative years the 1990 s the most popular risc processor was the mips architecture which powered high end computers by sgi while intel made super computers the paragon based on another risc design the i860 now nearly 2 decades later after intel abandoned their foray into the arm architecture strongarm and x scale risc is again challenging intel in the server market this time led by arm mips now owned by imagination is again turning out new ip cores to compete with arm and other embedded cores their warrior class processors are already providing 64 bit embedded processing power though with a lot less press that the likes of apple s a7 tags arm mips posted in processor news november 17th 2013 by admin itanium is dead and other processor news itanium sales forecasts vs reality itanium is dead is a phrase that has been used for over a decade in fact many claimed that the itanium experiment was dead before it even launched in 2001 the last hold out of the itanium architecture was hp likely because the itanium had a lot in common with its own pa risc however hp has announced that they will be transitioning their nonstop sever series to x86 presumably the new 15 core xeons intel is developing itanium was launched with goal of storming the server market billed as the next greatest thing it failed to make the inroads expected largely due to the 2 decades of x86 code it didnt support and poor initial compiler support many things were learned from itanium so though it will become but a footnote its technology will live on interestingly other architectures that seemed to be n the brink are getting continued support in new chips imagination known for their graphics ip purchased mips and now has announced the mips warrior p class core this core supports speeds of over 2ghz and is the first mips core with 128 bit simd support broadcom historically a mips powerhouse has announced a 64 bit arm server class processor with speeds of up to 3ghz perhaps ironic that arm is now being introduced into a market that itanium was designed for broadcom has an arm architecture license meaning they can roll their own designs that implement the arm instruction set similar to qualcomm and several others power continues to show its remarkable flexibility used by ibm in larger mainframes in the power7 and power8 implementations it crunches data at speeds up to 4 4ghz on the other end of the spectrum freescale formerly motorola one of the developers of the power architecture has announced the 1 8ghz quad core qoriq t2080 for control applications such as networking and other embedded use these days the power architecture is not often talked about at least in the embedded market but it continues to soldier on and be widely used lsi has used it in their fusion mpt raid controllers xilinx continues to offer it embedded in fpgas and bae continues to offer it in the form of the rad750 for space based applications perhaps it is this flexibility of use that has continued to allow architectures to be used itanium was very focused and did its one job very well same goes for the alpha architecture and the intel i860 all of which are now discontinued arm mips power x86 and a host of mcu architectures continue to be used because of their flexibility and large code bases so what architecture will be next to fall and will a truly new architecture be introduced that has the power and flexibility to stick around tags arm itanium mips power posted in processor news september 28th 2013 by admin realtek rtl8186 mips by lexra realtek rtl8186 lexra lx5280 mips with dsp extensions 2006 the mips architecture was created in 1985 from a project at stanford university it was one of the first licenseable architectures a company could buy a license and make their own mips architecture processors by the 1990 s this had become fairly common and many companies were making mips processors including performance semiconductor idt nec toshiba lsi and more in 1992 mips computer systems inc was bought by sgi in order to guarantee a supply a continued development of new mips designs for sgis computers it did continue to license the design to other companies as well fostering competition which helped lower prices for sgi in 1998 sgi spun off mips into its own company once again as sgi at the time had decided to move towards intel s itanium architecture this should sound familiar dec and the alpha suffered the same fate by 2008 mips was losing money and in 2013 what little remained having used most of their cash to buy and then sell at a loss chipidea of them was bought by imagination technologies makers of the powervr line of graphic solutions used notably in the apple iphone s a4 a5 a6 and likely a7 processors but there is a bit more to the story of mips a seemingly small chapter that very well could have changed history and certainly changed the success of mips in 1997 a small company called lexra was started lexra was a semiconductor intellectual property company they designed processors and licensed the designs what made lexra different is that they designed and licensed soft cores a soft core is an rtl register transfer level model of the processor it is usually written and delivered in an hdl hardware descriptive language such as verilog or vhdl and the purchaser may compile it down to whatever actual transistor level hardware they like this is exactly how arm works today but in 1997 arm only licensed hard cores cores already compiled down to the gate level and ready for implementation on a given fab process technology this allowed them to have tighter control over the design and its performance but made integration much harder into other products a soft core like lexra designed enabled rapid integration into a variety of so...
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