FROM
THE EDITOR
This week, we welcome our new editor Bryon Moyer to FPGA Journal. Bryon kicks things off with a new feature focused on incremental design - an emerging methodology that makes it easier and faster to iterate quickly on your FPGA design without compromising the parts that you’ve already finished. Incremental design has been a lip-service topic for years, but we’re just now starting to see the real-world tool support required to make it practical.
Next, we have a contributed article from Rakesh Jain of Mentor Graphics that dives deep into one vendor’s view on the topic of incrementality. Rakesh says that getting your FPGA design tuned up and working quickly is a function of three “I”s – Iterations, Incrementality, and Intelligence. The article has the details.
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Kevin Morris – Editor
FPGA and Structured ASIC Journal
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Incremental Design Moves Towards Mainstream
by Bryon Moyer, FPGA and Structured ASIC Journal
I have this recurring nightmare. I’m supposed to write a chapter for a book. I’ve pretty much got it done, doing some final editing on the last paragraph, and then on review realize that the first paragraph has changed mysteriously. So I fix it, but then another paragraph changes. I never seem to be able to get all the paragraphs right. And then someone else submits his chapter, and for some reason my chapter gets all screwed up. Of course, that’s about the time I also realize that I forgot that I had signed up for a college class that, of course, I never attended, and the final is tomorrow, and I wake up in a cold sweat. [more]
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Three “I”s of FPGA Design: Iterations, Incremental and Intelligent Design Tools
by Rakesh Jain,
Mentor Graphics Corp.
The flexibility offered by field-programmable gate arrays (FPGAs) has made design iterations an integral part of the FPGA design process. Traditionally, engineers quickly wrote hardware description language (HDL) for their design, ran synthesis and place-and-route on it, programmed the FPGA and tested design functionality directly in hardware. If a performance issue or a functional bug was discovered, appropriate modifications were made to the HDL, followed by re-synthesis and re-place-and-route to obtain a new FPGA bit-stream and re-testing the hardware. This flow was fast enough to easily allow a few iterations in one day. [more]
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