关于FPGA流水线设计的论文 This work investigates the use of very deep pipelines for implementing circuits in FPGAs, where each pipeline stage is limited to a single FPGA logic element (LE). The architecture and VHDL design of a parameterized integer array multiplier is presented and also an IEEE 754 compliant 32-bit floating-point multiplier. We show how to write VHDL cells that implement such approach, and how the array multiplier architecture was adapted. Synthesis and simulation were performed for Altera Apex20KE devices, although the VHDL code should be portable to other devices. For this family, a 16 bit integer multiplier achieves a frequency of 266MHz, while the floating point unit reaches 235MHz, performing 235 MFLOPS in an FPGA. Additional cells are inserted to synchronize data, what imposes significant area penalties. This and other considerations to apply the technique in real designs are also addressed.
标签： investigates implementing pipelines circuits
上传时间： 2015-07-26
上传用户：CHINA526
Design Specification Introduction Goals and Objectives GameForge is a graphical tool used to aid in the design and creation of video games. It attempts to bring game development down to a level that any computer savvy user can understand, without requiring masterful programming ability. A user with limited Microsoft DirectX and/or Visual C++ programming knowledge will be able to construct a basic, 2-D arcade game. GameForge limits the amount of actual code written by the user, if not eliminating it completely. It will also assist experienced programmers in generating the Microsoft DirectX and Microsoft Windows9x overhead necessary for basic game construction, allowing them to concentrate on more detailed game design issues and implementation.
标签： Specification Introduction Objectives GameForge
上传时间： 2013-12-27
上传用户：wl9454
最优化算法，应用有限内存拟牛顿方法（Limited Memory (variable-storage)quasi-Newton method）求解高维最优化问题，使用更多的内存将使算法更有效。
标签： 优化算法
上传时间： 2015-08-08
上传用户：cuiyashuo
* * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES LOSS OF USE, DATA, OR PROFITS OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH D
标签： WARRANTIES SOFTWARE PROVIDED EXPRESS
上传时间： 2013-12-20
上传用户：sxdtlqqjl
RTL-lwIP is the porting of the lwIP TCP/IP stack to RTLinux-GPL.The focus of the RTL-lwIP stack is to reduce memory usage and code size, making RTL-lwIP suitable for use in small clients with very limited resources such as embedded systems.
标签： RTL-lwIP the stack RTLinux-GPL
上传时间： 2015-09-05
上传用户：ahljj
* CONSTRAINTS * This module does not handle data which is considered out of range by the * application(i.e. fixed constants which represent error condition) * * Maximum weight value must be limited to 128 to prevent an overflow * condition during the calculation. * * The internal data type must be large enough to handle the calculations. * The maximum possible internal value * = Max Input Value * (weight - 1) + Max Input Value * If a maximum weight of 128 is used, the internal data type should be 2 * times the size of the input data type.
标签： CONSTRAINTS considered module handle
上传时间： 2015-09-07
上传用户：qunquan
In order to thoroughly understand what makes Linux tick and why it works so well on a wide variety of systems, you need to delve deep into the heart of the kernel. The kernel handles all interactions between the CPU and the external world, and determines which programs will share processor time, in what order. It manages limited memory so well that hundreds of processes can share the system efficiently, and expertly organizes data transfers so that the CPU isn t kept waiting any longer than necessary for the relatively slow disks.
标签： thoroughly understand variety order
上传时间： 2014-12-07
上传用户：PresidentHuang
This m-file simulates MPSK (theoretical and simulated) with Gray coding This m-file simulates MPSK (BPSK,QPSK,8PSK)with theoretical and simulated results using Gray coding. Numerical examples of a satellite link design are shown using QPSK and/or 8PSK when the bit rate(Rb)is greater than the channel bandwidth Wc (Band-limited channel).
标签： simulates m-file This MPSK
上传时间： 2014-01-11
上传用户：372825274
SQL Server developers and administrators are no strangers to Data Transformation Services (DTS) packages. They likely develop DTS packages to perform everything from simple database operations to data aggregation. As such, when they upgrade some or all of their servers to SQL Server 2005, they must decide what to do with all of their DTS packages
标签： administrators Transformation developers strangers
上传时间： 2013-12-26
上传用户：zhengzg
J2ME 是SUN 公司针对嵌入式、消费类 电子产品推出的开发平台，与J2SE 和J2EE 共同组成Java 技术的三个重要的分支。J2ME 实际 上是一系列规范的集合，由JCP 组织制定相关的Java Specification Request（JSR）并发布，各 个厂商会按照规范在自己的产品上进行实现，但是必须要通过TCK 测试，这样确保兼容性。比 如MIDP2.0 规范就是在JSR118 中制定的。可能接触过J2ME 的开发者会觉得说J2ME 是一系列 的规范不准确吧。因为我们在开发中用到了很多例如CLDC（Connected Limited Devices Configuration）和MIDP（Mobile Information Devices Profile）等内容。
上传时间： 2015-11-20
上传用户：sardinescn
