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Posts Tagged ‘verilog’

UVM Register Layer: The Structure

Wednesday, April 6th, 2016

UVM-Register-Layer-The-StructureI don’t know about you, but I am looking forward to the day where we won’t even have to go to the doctor’s office for an exam. Instead, we will all have scanners in our homes that will transmit full digital models to our doctors who can then poke, prod, and examine us remotely.

 

This is essentially what the UVM register layer allows and does. The UVM register layer acts similarly by modeling and abstracting registers of a design. It attempts to mirror the design registers by creating a model in the verification testbench. By applying stimulus to the register model, the actual design registers will exhibit the changes applied by the stimulus.

 

The benefit of this approach comes from the high level of abstraction provided. The bus protocols for accessing registers can change from design to design, but any stimulus developed for verification of the registers doesn’t have to. This makes it easy to port code from one project to the next if the registers are the same. Taking a look at Fig. 1 provides a better understanding of what a register model implementation might look like with respect to the UVM environment.
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90’s Kid Active-HDL Celebrates Sweet 16

Wednesday, August 28th, 2013

As the proud Product Manager of Aldec’s  FPGA Design Simulation solution,  I am excited (like it was my first Cranberries concert) to announce that Active-HDL™ is celebrating 16 years since its initial release in 1997. Active-HDL has not merely stood the test of time, it has dominated the FPGA market like a Hulk Hogan smackdown with powerful simulation performance and debugging tools.

The key to Active-HDL’s long-term success lies in Aldec’s customer-centric philosophy. Simply put, we really do listen closely to our users and invest heavily in our tools. For this reason, continued simulation performance optimizations from release to release enable users to benefit from Active-HDL’s faster simulation even as the size of FPGA designs continues to grow.

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HW Designers: Brush up on your SV with Online Training

Monday, August 12th, 2013

 

Fast Track to SystemVerilog for Verilog Users

The ability to adopt methodologies and get up to speed quickly is critical in today’s fast moving environment. Aldec offers Fast Track™ ONLINE trainings designed for busy engineers to increase their productivity and enhance their skill level from the comfort of their own browser.

Got SystemVerilog? While it may be a fashionable topic among verification engineers, it’s generally a shunned subject among hardware designers. While there are many good reasons for this (overgrown size of the SystemVerilog standard, expensive options required to use many language features in simulation, poor support in low-end tools, etc.), designers familiar with classical Verilog can benefit greatly from the features available in the Design Subset of SystemVerilog. Designing state machines is one excellent example. It is as easy and elegant in SystemVerilog as it is in VHDL – and those machines even synthesize in better tools!

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Legacy Schematic Designs Giving you a Headache?

Tuesday, July 30th, 2013

Retargeting Legacy Designs for New Technology

Digital design has come a long way since its inception from drawing schematic on paper, to CAD tools which can be used to draw schematics, and to today’s most popular (and efficient) process of describing designs through HDLs.

I recently encountered a customer with a legacy design developed in block diagram format. If he hadn’t been an Aldec customer, he might have been stuck. Fortunately,  Aldec Active-HDL™ provides utilities for importing legacy schematic based designs from Xilinx® Foundation Series, ViewLogic™, ViewDraw™, Active-CAD™ or any schematic tools that can output an EDIF netlist.

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Wait….Did you say HDL Editor?

Monday, June 24th, 2013

Productivity Boosting Features
Yes I did, but with no intention to start a holy war on which HDL editor is best. When it comes to HDL editors, each engineer has their own choice and I am not attempting to hurt any madly, deeply felt sentiments. My goal is only to bring the awareness to those using the HDL editor built into Active-HDL™ and to help them use it more efficiently.

There are two main categories for HDL editors (1) general purpose text editors, and (2) integrated text editors. Both have their own pros and cons, and in the end it is for each engineer to decide which suits their needs.

The HDL editor built into Active-HDL falls under the second category of integrated text editors. It offers many basic features (syntax highlighting, templates, columns selection, code folding, auto-formatting) as well as semantic features (code navigation, on-the-fly error detector), and also offers seamless integration with the simulator and version control system. The HDL editor in Active-HDL can be used with VHDL, Verilog, SystemVerilog, SystemC, C/C++, PSL, OVA, Perl scripts and Tcl scripts.

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