The Virtex-4 features, such as the programmable IDELAY and built-in FIFO support, simplifythe bridging of a high-speed, PCI-X core to large amounts of DDR-SDRAM memory. Onechallenge is meeting the PCI-X target initial latency specification. PCI-X Protocol Addendum tothe PCI Local Bus Specification Revision 2.0a ([Ref 6]) dictates that when a target signals adata transfer, "the target must do so within 16 clocks of the assertion of FRAME#." PCItermination transactions, such as Split Response/Complete, are Commonly used to meet thelatency specifications. This method adds complexity to the design, as well as additional systemlatency. Another solution is to increase the ratio of the memory frequency to the PCI-X busfrequency. However, this solution increases the required power and clock resource usage.
上传时间： 2013-11-24
上传用户：18707733937
Many applications use connection/object pool. A program may require a IMAP connection pool and LDAP connection pool. One could easily implement a IMAP connection pool, then take the existing code and implement a LDAP connection pool. The program grows, and now there is a need for a pool of threads. So just take the IMAP connection pool and convert that to a pool of threads (Copy, paste, find, replace????). Need to make some changes to the pool implementation? Not a very easy task, since the code has been duplicated in many places. Re-inventing source code is not an intelligent approach in an object oriented environment which encourages re-usability. It seems to make more sense to implement a pool that can contain any arbitrary type rather than duplicating code. How does one do that? The answer is to use type parameterization, more Commonly referred to as templates.
标签： connection pool applications program
上传时间： 2013-12-25
上传用户：playboys0
人工智能中模糊逻辑算法 FuzzyLib 2.0 is a comprehensive C++ Fuzzy Logic library for constructing fuzzy logic systems with multi-controller support. It supports all Commonly used shape functions and hedges, with full support for the various types of Aggregation, Correlation, Alphacut, Composition, Defuzzification methods. The latest version of the C++ Fuzzy Logic Class Library contains all the C++ source code and comes complete with a usage example for building a multi-controllers fuzzy logic model.
标签： comprehensive constructing FuzzyLib library
上传时间： 2013-12-17
上传用户：dbs012280
Text processing often involves matching text against a pattern. Although Java s character and assorted string classes offerlow- levelpattern- matching support, that support Commonly leads to complex code. To help you write simplerpattern- matching code, Java provides regular expressions. After introducing you to terminology and thejava.util. regex package, Jeff Friesen explores many regular expression constructs supported by that package s Pattern class. Then he examines Pattern s methods and the additionaljava.util. regex classes. In conclusion, he presents a practical application of regular expressions.
标签： processing character Although involves
上传时间： 2014-01-19
上传用户：爱死爱死
Developers use algorithms and data structures every day of their working lives. Having a good under-standing of these algorithms and knowledge of when to apply them is essential to producing softwarethat not only works correctly, but also performs efficiently. This book aims to explain those algorithms and data structures most Commonly encountered in day-to-day software development, while remaining at all times practical, concise, and to the point, with little orno verbiage to distract from the core concepts and examples.
标签： Developers algorithms structures working
上传时间： 2015-11-03
上传用户：wyc199288
一份计算机网络报告2，含一些常用网络命令，A report of two computer networks，Containing some of the Commonly used network order.
上传时间： 2014-01-04
上传用户：lunshaomo
Example to support XML files using MSXML. ========================================= XML (Extensible Markup Language) is a Commonly used basis for representing a huge range of structured data file formats. The specification is maintained by the World Wide Web Consortium (W3C?. This plugin is intended as an example of how XML data can be read with a DataPlugin. You can adjust it to meet the needs of your own XML file format. After installing the URI file (double click on it), you can find the VBScript file located at "C:\Program Files\National Instruments\Shared\USI\plugins\DataPlugins\XML Example" You can make changes to this file to read your specific XML file.
标签： XML Example support Extensi
上传时间： 2016-01-03
上传用户：cooran
DESIGN PATTERNS JAVA COMPANION Design patterns began to be recognized more formally in the early 1990s by Helm (1990) and Erich Gamma (1992), who described patterns incorporated in the GUI application framework, ET++. The culmination of these discussions and a number of technical meetings was the publication of the parent book in this series, Design Patterns -- Elements of Reusable Software, by Gamma, Helm, Johnson and Vlissides.(1995). This book, Commonly referred to as the Gang of Four or “GoF” book, has had a powerful impact on those seeking to understand how to use design patterns and has become an all-time best seller. We will refer to this groundbreaking book as Design Patterns, throughout this book and The Design Patterns Smalltalk Companion (Alpert, Brown and Woolf, 1998) as the Smalltalk Companion.
标签： recognized COMPANION PATTERNS patterns
上传时间： 2016-02-27
上传用户：大三三
As a consequence, more exact models of devices can be retained for analysis rather than the approximate models Commonly introduced for the sake of computational simplicity. A computer icon appears in the margin with each introduction of MATLAB analysis.
标签： consequence analysis retained approxi
上传时间： 2016-04-07
上传用户：yan2267246
As a consequence, more exact models of devices can be retained for analysis rather than the approximate models Commonly introduced for the sake of computational simplicity. A computer icon appears in the margin with each introduction of MATLAB analysis.
标签： consequence analysis retained approxi
上传时间： 2016-04-07
上传用户：shanml
