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Topic: CPU design


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In the News (Mon 17 Dec 18)

  
  CPU design - Wikipedia, the free encyclopedia
System designers building parallel computers, such as Google, pick CPUs based on their speed per watt of power, because the cost of powering the CPU outweighs the cost of the CPU itself.
Hence the instruction set was designed to manipulate not just simple binary numbers, but text, scientific floating-point (similar to the numbers used in a calculator), and the binary coded decimal arithmetic needed by accounting systems.
In modern designs it is common to find two load units, one store (many instructions have no results to store), two or more integer math units, two or more floating point units, and often a SIMD unit of some sort.
en.wikipedia.org /wiki/CPU_design   (6751 words)

  
 4.4 Basic CPU Design   (Site not responding. Last check: 2007-10-07)
When designing an instruction set, the CPU's designers generally choose opcodes that are a multiple of eight bits long so the CPU can easily fetch complete instructions from memory.
CPUs based on microcode contain a small, very fast, execution unit that fetches instructions from the microcode bank (which is really nothing more than fast ROM on the CPU chip).
The CPU is attempting to fetch the next byte from the prefetch queue for use as an operand, at the same time it is fetching operand data from the prefetch queue for use as an opcode.
webster.cs.ucr.edu /AoA/Windows/HTML/CPUArchitecturea3.html   (13546 words)

  
 Dual-CPU Chip Scheme For Network App Melds Two Design Cultures
The designers floor planned early in the process, down to the level of assigning pins to particular locations on the perimeters of the blocks.
In contrast to the CPU cores, the design for these portions of the chip was conducted in a relatively standard ASIC-like flow.
After the design of the five-port RAM cell, the array was relatively conventional.
www.eedesign.com /article/printableArticle.jhtml?articleID=17407487   (787 words)

  
 CPU design
The faster a CPU runs, the more heat it generates, and a CPU has a speed limit beyond which it is liable to overheat and break down.
A CPU has several physical wires that connect it to the RAM and ROM in the computer (mainly constituted by the address bus and the data bus), and through these wires, information is stored and retrieved by the CPU.
The CPU needs to be able to act on this opcode and select a course of action based on exactly what that opcode is. This is the job for the instruction decoder, which in Verilog can be programmed quite easily using the case statement.
www.geocities.com /SiliconValley/2072/cpudes.htm   (3038 words)

  
 Great Microprocessors of the Past and Present
It was designed as a single chip version of the TI 990 minicomputer series, much like the Intersil 6100 was a single chip PDP-8, and the Fairchild 9440 and Data General mN601 were both one chip versions of Data General's Nova.
The AMD 29000 is another load-store CPU descended from the Berkeley RISC design (and the IBM 801 project), as a modern successor to the earlier 2900 bitslice series (beginning around 1981).
The R2000 design came from the Stanford MIPS project, which stood for Microprocessor without Interlocked Pipeline Stages [See Appendix A], and was arguably the first commercial RISC processor (other candidates are the ARM and IBM ROMP used in the IBM PC/RT workstation, which was designed around 1981 but delayed until 1986).
bwrc.eecs.berkeley.edu /CIC/archive/cpu_history.html   (15782 words)

  
 Embedded.com - Will Self-timed Asynchronous Logic Rescue CPU Design?
What this means for high performance and power-efficient design is that such local control permits resources to be used only when they are necessary, similar to data flow architecture in the highly parallel designs used in embedded network processors.
Asynchronous circuit designs were common in the early days of circuit design and can still be found here and there, not as an all-encompassing design methodology, but as a problem solver, after every synchronous design trick has run out of gas.
To be sure, process engineers and logic designers have been quite innovative in finding quick fixes when their synchronous engines show signs of sputtering and dying.
www.embedded.com /story/OEG20020824S0001   (2650 words)

  
 .Net Security Blog : A Look at the Xbox 360 CPU Design   (Site not responding. Last check: 2007-10-07)
Jeffery Brown has posted his paper on the Xbox 360 CPU Design from the Fall Processor Forum over on IBM's DeveloperWorks.
I clearly remember the day in ECE 323 (Hardware Design and Organization) when we discovered the benefits of adding test pins to our circuit design -- the final project for that class was to design a processor which executed some simple set of instructions and circuitry to host it.
This worked well since our opcode design was that each opcode fit into a single byte, so we only ever had to increment by one.
blogs.msdn.com /shawnfa/archive/2005/12/12/502778.aspx   (645 words)

  
 CPU Design HOW-TO
CPU Design HOW-TO Al Dev (Alavoor Vasudevan) alavoor[AT]yahoo.com
CPU is the "brain" of computer and is a very vital component of computer system and is like a "cousin brother" of operating system (Linux or Unix).
Supercomputers traditionally have been expensive, highly customized designs purchased by a select group of customers, but the industry is being overhauled by comparatively mainstream technologies such as Intel processors, InfiniBand high-speed connections (see also Myricom, and Fibre Channel storage networks that have become fast enough to accomplish many tasks.
www.faqs.org /docs/Linux-HOWTO/CPU-Design-HOWTO.html#ss10.1   (7140 words)

  
 AP-700 Intel StrataFlash(R) Memory (J3) to ARM7TDMI CPU Design Guide
This reference design was developed to help reduce the time it takes you to design with Intel StrataFlash® memory (J3) and a specific target CPU.
In many cases the interface between the CPU and Intel StrataFlash memory is glueless.
This reference design has not been fully tested and is only intended for use as reference material.
www.intel.com /design/flcomp/applnots/292248.htm   (92 words)

  
 Comments for: Intel reveals details of new CPU design - ja.zz
IDF — On the heels of Intel's announcement of a single, common CPU architecture intended to drive its mobile, desktop, and server platforms, the company has divulged additional details of that microarchitecture.
Unlike Intel's current dual-core CPU designs, which don't really share resources or communicate with one another except over the front-side bus, this new design looks to be a much more intentionally multicore design.
As we've noted, the first CPUs based on this design will be available in the second half of 2006 and built using Intel's 65nm fabrication process.
techreport.com /ja.zz?comments=8695   (1917 words)

  
 Mobile CPU Mania | Tom's Hardware
The first on-die second level cache for Intel CPUs were introduced to the mobile market with the Intel Pentium II PE CPU.
Desktop CPUs lead the prestigious clock race for the fastest CPU, but the quality of the CPU design and ability to produce CPUs with high clock speeds at low voltage clearly show the real potential of a CPU manufacturer.
The fastest available Desktop Athlon CPU at 1200MHz has a maximum thermal design power of 66W, while the fastest available Desktop Intel Pentium III CPU at 1000MHz has a thermal design power max of 33W.
www.tomshardware.com /2000/11/07/mobile_cpu_mania/index.html   (534 words)

  
 Links
Bit-Slice Microprocessor Design, by Brick and Mick, McGraw Hill, 1980.
A series of seven booklets describing designs using AMD's am2900 family of bit-slice parts.
EGO: A Homebuilt CPU, Part 2: The Hardware, by Clifford Kelley, Byte Magazine, October 1985.
www.homebrewcpu.com /links.htm   (203 words)

  
 Summit Design, Inc - ESL and SystemC technology provider - Home page
Summit Design is a technology leader in Electronic Systems Level (ESL) design, with a proven track record going back to 1991.
Summit Design provides a complete set of products and solutions that are based on the industry standard SystemC and targeted for combined hardware and software architecture design and analysis for multi-core System-on-Chip (SoC) and large-scale systems.
Vista is industry's first integrated development environment (IDE) truly designed for SystemC for combined hardware and software design.
www.summit-design.com   (396 words)

  
 fpgacpu.org - FPGA CPU News
It has also been voiced frequently by design teams (not represented on the panel) that are working with 130-nm designs.
It seems challenging to design and build a usable, coherent, and effective tool in the face of multi-organizational and multi-disciplinary considerations.
The design flow is unusual, using XDL to build the initial design and jbits to configure the switches.
www.fpgacpu.org   (6297 words)

  
 AP-713 3 Volt Intel(R) Fast Boot Block to Motorola MPC8240 CPU Design Guide
AP-713 3 Volt Intel(R) Fast Boot Block to Motorola MPC8240 CPU Design Guide
This reference design was developed to help reduce the time it takes you to design with the 3 Volt Intel®; Fast Boot Block memory and a specific target CPU.
In many cases the interface between the CPU and the 3 Volt Intel Fast Boot Block memory is glueless.
support.intel.com /design/flcomp/support/applnots/292261.htm   (146 words)

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