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Topic: VHDL

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	VHDL & Verilog Compared & Contrasted
		VHDL may be preferred because it allows a multitude of language or user defined data types to be used.
		VHDL is a concise and verbose language; its roots are based on Ada.
		VHDL has generic and configuration statements that are useful in test harnesses, that are not found in Verilog.
	www.angelfire.com /in/rajesh52/verilogvhdl.html (3541 words)

	VHDL - Wikipedia, the free encyclopedia
		VHDL borrows heavily from the Ada programming language in both concepts (for example, the slice notation for indexing part of a one-dimensional array) and syntax.
		VHDL is a fairly general-purpose language, although it requires a simulator on which to run the code.
		VHDL is a strongly typed language, and as a result is considered by some to be superior to Verilog.
	en.wikipedia.org /wiki/VHDL (2408 words)

	VHDL samples
		The VHDL source code is file_io.vhdl This example is a skeleton for a VHDL simulation that needs input from a file, simulates based on the input and produces output to a file.
		The VHDL source code is sqrt8.vhdl The output of the VHDL simulation is sqrt8.out The schematic is sqrt8.jpg The Sm component schematic is sqrtsm.jpg This example shows how a Sm component is directly coded in VHDL as concurrent statements.
		The VHDL source code is sqrt8m.vhdl The output of the VHDL simulation is sqrt8m.out The schematic is sqrt8m.jpg This circuit performs the same function on the input as does sqrt8.vhdl above.
	www.csee.umbc.edu /help/VHDL/samples/samples.shtml (1156 words)

	VHDL samples (references included)
		The VHDL source code is sqrt32.vhdl The output of the VHDL simulation is sqrt32.out The schematic was never drawn.
		The VHDL source code for the generic serial multiplier is mul_ser_g.vhdl The output of the VHDL simulation is mul_ser_g.out This simulation models a multiplier using "hi" and "lo" registers used in the MIPS architecture and is similar to the Patterson and Hennessey example.
		The corresponding VHDL source code and output for the cases are: stall_up.vhdl and stall_up.out stall_down.vhdl and stall_down.out
	www.csee.umbc.edu /help/VHDL/samples/samples.html (1371 words)

	HDL Planet's VHDL Page
		VHDL is an industry standard language used to describe hardware from the abstract to the concrete level.
		VHDL is rapidly growing in popularity and it is being embraced as the universal communication medium of design.
		VHDL with its ability to support structural representation of circuits, is very useful as a low-level form of communication between different tools in a computer-aided design environment.
	hdlplanet.tripod.com /vhdl/vhdl.html (2236 words)

	A VHDL Tutorial For EE475
		VHDL is an industry standard for the description, modeling and synthesis of digital circuits and systems.
		Another nice aspect of the VHDL language is that it is similar in syntax to objected oriented languages such as C++.
		Since VHDL is a strongly typed language, there are a multitude of types available including integer, array, floating, record, and composite just to name a few.
	instruct1.cit.cornell.edu /courses/ee475/tutorial/VHDLTut.htm (2259 words)

	VHDL Mode Version 3 Documentation: Customizing Indentation
		VHDL Mode provides two variables that make it easier for you to customize your style on a per-file basis.
		For most users, VHDL Mode will support their coding styles with very little need for customizations.
		But perhaps we'd like VHDL Mode to be a little more intelligent so that it offsets the waveform descriptions relative to the signal assignment operator in line 3.
	www.xemacs.org /Documentation/packages/html/vhdl-mode_5.html (1599 words)

	The Hamburg VHDL Archive
		John Van Tassel: Femto-VHDL: The semantics of a subset of VHDL and its embedding in the HOL theorem-prover.
		VHDL synthesizable subset 08/12/96 (26K compressed Postscript) from Cadence
		VHDL Simili development is currently available for FREE (intended for small designs, as the performance will be disgraded on large designs) or you can request a demo/trial license for the full version.
	tech-www.informatik.uni-hamburg.de /vhdl/vhdl.html (3369 words)

	VHDL Tutorial
		VHDL allows both concurrent and sequential signal assignments that will determine the manner in which they are executed.
		VHDL uses reserved keywords that cannot be used as signal names or identifiers.
		VHDL is a strongly typed language which implies that one has always to declare the type of every object that can have a value, such as signals, constants and variables.
	www.seas.upenn.edu /~ese201/vhdl/vhdl_primer.html (2770 words)

	EETimes.com - VHDL-200x improves design and verification productivity
		VHDL users have never worried about simulation mismatches caused by race conditions, nor have they had to re-write finite-state machines due to changes in the state encoding.
		VHDL's strong typing provides a fundamental level of assertion-based verification, as a type declaration defines certain properties about object values that can be checked during simulation.
		VHDL has provided significant value for designers since 1987, but has had only one significant language revision in 1993.
	www.eetimes.com /news/design/showArticle.jhtml?articleID=17408827 (2050 words)

	[No title]
		Identifiers in VHDL must begin with a letter, and may comprise any combination of letters, digits, and underscores.
		Each VHDL objects must be classified as being of a specific data type.
		VHDL includes a number of predefined data types, and allows users to define custom data types as needed.
	www.eng.auburn.edu /department/ee/mgc/vhdl.html (3536 words)

	VHDL Introduction
		VHDL specifications include additional data types that are used in the behavioral description of a circuit design.
		The last signal declaration in a port statement and the port statement itself are terminated by a semicolon on the outside of the port's closing parenthesis.
		VHDL has a built in library that is automatically accessed without a library or use statement.
	www.phx.devry.edu /fac/miller/vhdl/vhdl_index.htm (9013 words)

	FAQ comp.lang.vhdl (part 1): General
		Because VHDL is relatively young, the restandardization in 1992 included changes as well as the revision from 2000 and 2002 (actually, no new VHDL standard was produced in 1997).
		Further, VHDL needs to be able to statically (that is, during static elaboration) determine all drivers of a signal, in order to create a static network topology.
		VHDL controls visibility of declarations using the notion of the scope of a declaration.
	www.eda.org /comp.lang.vhdl/FAQ1.html (14391 words)

	The Complete Electronics Lab for Windows (circuit simulation, semiconductors)
		VHDL (Virtual Hardware Description Language) is an IEEE- standard hardware description language used by electronic designers to describe and simulate their chips and systems prior to fabrication.
		The great advantage of VHDL is not only that it is a IEEE standard, but also that can be realized automatically in programmable logic devices such as FPGAs and CPLDs.
		TINA can generate a synthesizable VHDL code along with the corresponding UCF file if the Generate synthesizable code checkbox is set in the Analysis/Options menu.
	www.dsmm.net /English/tina/0332.php (341 words)

	VHDL-Tutorial
		Various VHDL circuits in postscript and source form on the Univesity of Strasbourg ftp server
		The comp.lang.vhdl newsgroup discusses the VHDL language, and its uses.
		The comp.cad.synthesis newsgroup discusses CAD and synthesis, often with a heavy focus on VHDL.
	www.xtrj.org /collection/vhdl.htm (475 words)

	SynaptiCAD, VHDL Script Example
		WaveFormer can generate VHDL stimulus models from waveforms that are displayed in the timing diagram window.
		Below is an example of a timing diagram and some of the VHDL code that was generated from the timing diagram.
		The VHDL and Verilog Test Bench Synthesis page describes the different types of test benches that are generated.
	www.syncad.com /wp_vhdl.htm (607 words)

	Information on VHDL, Verilog, Synthesis, SystemC, Tcl, Perl As applicable to VLSI Design
		VHDL Tutorial A javascript based tutorial which uses javascript to open new windows by Prof.
		LEON-1 VHDL model The LEON core is a SPARC* compatible integer unit developed for future space missions.
		VHDL SYNTHESIS TUTORIAL A tutorial on synthesis By Bob Reese of Electrical Engineering Department Mississippi State University.
	www.angelfire.com /electronic/in/vlsi/vhdl.html (929 words)

	VHDL Routines
		The VHDL program will run, as is, with the Altera package.
		This is the VHDL listing for a 2-input AND gate comparable to one gate in a TTL7408 package.
		Additional VHDL Sample Routines are provided in this issue of the Technology Interface for those wishing to gain more experience with VHDL.
	et.nmsu.edu /~etti/winter98/electronics/beasley/vhdltut.html (1058 words)

	Links to VHDL sites
		VHDL Information generated by European Space Agency: their ftp site houses tools, simulators, and models.
		VHDL Technology Group is an organization focusing on PC-based VDHL tools, featuring commercial and free software,as well as an extensive listing of standards, tutorials, and other information.
		VHDL Language sensitive editor (Turbo Writer) from Saros Corporation in the UK SoftSmith's VHDL Capture software, and their University free license program.
	www.sdsmt.edu /syseng/ee/courses/ee741/vhdl-links.html (423 words)

	vhdl tutorial
		VHDL+ is a hardware description language intended for documenting and modeling digital systems ranging from a small chip to a large system.
		VHDL provides five kinds of design units to model a design (or a circuit), of which the following three are of primary interest:
		VHDL modeling (particularly in the Mentor Graphics environment) requires proper organization of directories.
	www.ee.siue.edu /~mentor/EE483/qvpro.html (1699 words)

	Amazon.com: VHDL: Analysis and Modeling of Digital Systems: Books: Zainalabedin Navabi (Site not responding. Last check: 2007-11-03)
		It is written in such a way that it presents the development and nuances of the VHDL language sequentially and ties some of the history of the language into the examples.
		I think there are other books, "A VHDL Synthesis Primer" by Bhasker that are more compact design references, but this book is a must have for comprehensive language coverage and some of the more powerful concepts that often aren't covered by other references.
		I had no VHDL experience and it was very helpful to read and learn from this book.
	www.amazon.com /VHDL-Analysis-Modeling-Digital-Systems/dp/0070464790 (1672 words)

	Accellera - VHDL
		The charter of this committee is to define and deliver, in form of a draft LRM, enhancements to IEEE Standard VHDL 1076.
		Prioritize and identify language features that VHDL users deem valuable and of high priority.
		Continue work on future releases of the Accellera Standard VHDL and donating them to the IEEE.
	www.accellera.org /activities/vhdl (184 words)

	Amazon.com: Vhdl: Books: Douglas L. Perry (Site not responding. Last check: 2007-11-03)
		Whether you're a VHDL veteran or rookie, now it's easier than ever to write lean, efficient VHDL descriptions for any hardware design.
		Dough Perry's VHDL, Third Edition, serves up a no-nonsense "by example" approach guaranteed to help you get up to speed fast on the full range of VHDL description capabilites...
		I never thought I'd say it, but this VHDL book is actually a bit weak on the hardware side.
	www.amazon.com /Vhdl-Douglas-L-Perry/dp/0070494363 (1542 words)

	Mentor Graphics ModelSim EE User Guide
		A modeled design unit is tested and evaluated by defining test stimuli to be applied to its inputs, simulating the operation of the unit as these stimuli are applied, and capturing values of outputs and other signals within the unit that can be examined to determine if the unit behaved properly.
		The ModelSim EE simulator loads a compiled VHDL model, allows test stimuli (called "forces") to be defined, either interactively or via a "command file", and then simulates the operation of the design, displaying specified signals in list format and/or as timing diagram waveforms.
		To debug a VHDL model, a user may interact with the simulator by defining "breakpoints", which stop simulation at selected VHDL statements within the model, at which time the user may examine signals and/or alter signal values.
	www.eng.auburn.edu /department/ee/mgc/quickvhdl/modelsim.html (3786 words)

	Useful links: VHDL (Site not responding. Last check: 2007-11-03)
		VHDL Analysis and Standardization Group : Group in charge of VHDL, IEEE Std 1076
		VHDL Synthesis Working Group: Group in charge of development of NUMERIC packages, IEEE Std 1076.3
		VHDL Synthesis Interoperability Working Group: Group in charge of development of RTL standard IEEE Std 1076.6
	members.aol.com /SGalaxyPub/useful_links_vhdl.htm (175 words)

	Symphony EDA Home
		Contribute a large VHDL design (~100,000 gates or larger) to our performance testing database, and qualify to receive a
		Find out more about VHDL Simili and experience its full functionality with a free trial license.
		VHDL Simili 3.x, with its vast performance enhancements, offers exceptional value in both the Standard Edition (from US$300 for a 1-year license) and Professional Edition (from US$750 for a 1-year license).
	www.symphonyeda.com (411 words)

	VHDL Examples (Site not responding. Last check: 2007-11-03)
		Altera provides VHDL design examples as downloadable executable files or displayed as text in your web browser.
		To use VHDL examples displayed as text in your Quartus II or MAX+PLUS II software, copy and paste the text from your web browser into the Quartus II or MAX+PLUS II software Text Editor.
		Make sure that the file name of the VHDL design file (.vhd) corresponds to the entity name in the example.
	www.altera.com /support/examples/vhdl/vhdl.html (143 words)

	SymphonyEDA Products Page
		is a low-cost, yet powerful and feature-rich VHDL development system designed for the serious hardware designer.
		It includes a very fast VHDL compiler and simulator assembled into a powerful Integrated Development Environment and waveform interface.
		VHDL Simili is offered in Standard and Professional Editions (see "feature comparison page" for differences).
	www.symphonyeda.com /products.htm (518 words)

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