Up front phases improve CDC analysis

Up front phases improve CDC analysis
by Don Dingee on 09-19-2016 at 4:00 pm

Many tools find clock domain crossings (CDCs) in FPGA designs. Some don’t find the right ones since they don’t comprehend things like in-house synchronizer constructs. Some find too many based on misunderstanding intent, inaccurate constraints, and other factors that lead to noise.… Read More


More on HAPS hybrid prototyping for ARMv8 with Linaro

More on HAPS hybrid prototyping for ARMv8 with Linaro
by Don Dingee on 08-19-2016 at 4:00 pm

A few weeks ago we previewed a Synopsys webinar describing how they are linking the ARM Juno Development Platform with the HAPS-80 and HAPS ProtoCompiler environment. I’ve had a look at the archived event and have some additional thoughts.… Read More


One FPGA synthesis flow for different IP types

One FPGA synthesis flow for different IP types
by Don Dingee on 05-06-2016 at 4:00 pm

Both Altera and Xilinx are innovative companies with robust ecosystems, right? It would be a terrible shame if you located the perfect FPGA IP block for a design, but couldn’t use it because it was in the “wrong” format for your preferred FPGA. What if there were a way around that?

There is a compelling argument to use each FPGA vendor… Read More


Tcl scripts and managing messages in ASIC & FPGA debug

Tcl scripts and managing messages in ASIC & FPGA debug
by Don Dingee on 04-27-2016 at 4:00 pm

Our previous Blue Pearl post looked at the breadth of contextual visualization capability in the GUI to speed up debug. Two other important aspects of the ASIC & FPGA pre-synthesis workflow are automating analysis with scripts and managing the stream of messages produced. Let’s look at these aspects… Read More


Cross-viewing improves ASIC & FPGA debug efficiency

Cross-viewing improves ASIC & FPGA debug efficiency
by Don Dingee on 04-20-2016 at 4:00 pm

We introduced the philosophy behind the Blue Pearl Software suite of tools for front-end analysis of ASIC & FPGA designs in a recent post. As we said in that discussion, effective automation helps find and remedy issues as each re-synthesis potentially turns up new defects. Why do Blue Pearl users say their tool suite is easier… Read More


Debugging is the whole point of prototyping

Debugging is the whole point of prototyping
by Don Dingee on 04-15-2016 at 4:00 pm

The prototype is obviously the end goal of FPGA-based prototyping, however success of the journey relies on how quickly defects can be found and rectified. Winning in the debug phase involves a combination of methodology, capability, and planning. Synopsys recently aired a webinar on their HAPS environment and its debug ecosystem.… Read More


Design units come to faster Riviera-PRO release

Design units come to faster Riviera-PRO release
by Don Dingee on 03-11-2016 at 4:00 pm

For the latest incremental improvements to its Riviera-PRO functional verification platform, Aldec has turned to streamlining random constraint performance. The new Riviera-PRO 2016.02 release also is now fully supported on Windows 10 and adds a new debugger tool.… Read More


A Brief History of FPGA Prototyping

A Brief History of FPGA Prototyping
by Paul McLellan on 09-25-2015 at 7:00 am

Verifying chip designs has always suffered from a two-pronged problem. The first problem is that actually building silicon is too expensive and too slow to use as a verification tool (when it happens, it is not a good thing and is called a “re-spin”). The second problem is that simulation is, and has always been, too slow.

When Xilinx… Read More


Cadence and Reverse Debugging

Cadence and Reverse Debugging
by Paul McLellan on 08-22-2014 at 7:01 am

I wrote back in March about Undo Software. They have a reverse debugging solution called UndoDB (the DB is for debug, not database). I have a soft spot for reverse debugging ever since seeing one of the engineers at Virtutech type reverse single step and seeing the code back up a single instruction and realizing that literally months… Read More


Undo Your Code

Undo Your Code
by Paul McLellan on 03-30-2014 at 9:21 pm

When I was a Virtutech a few years ago we had a product called Hindsight. It looked close to magic when you used it since it allowed you to run code backwards. I assume that the technology is still lurking under the hood in Wind River’s Simics product, now part of Intel. The way the code worked is that as the software executed, Simics… Read More