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BillWM
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Re: Nexus 5001
BillWM   10/2/2013 6:24:50 PM
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Right now I am experimenting with the Nexus debug in the openmsp430 core -- in this implementation the Debugger connects to GDB via Serial/I2C -- I am at the point where I am building a little debug stick from an ICEStick from Lattice to support this effort --  The openmsp430 is presently in a Spartan 6 LX-16 --

mike_eager
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Nexus 5001
mike_eager   10/2/2013 5:39:49 PM
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JTAG is old, slow, and intrusive.  It isn't the only way to debug embedded processors.  Nexus 5001 (http://www.nexus5001.org/) defines several levels of debug support, including JTAG.  For one implementation, see http://www.ip-extreme.com/IP/nexus_5001.shtml.

Max The Magnificent
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Re: Scorpions, poisonous centipedes, and black widows, Oh My!
Max The Magnificent   9/26/2013 5:49:41 PM
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#BillWM: ...talk about a Jynx hanging over a plant.

What? You had jynxs AND scorpions? LOL

BillWM
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Re: Scorpions, poisonous centipedes, and black widows, Oh My!
BillWM   9/26/2013 5:47:18 PM
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Once we even lost every computer in the building due to a lightning strike -- talk about a Jynx hanging over a plant.

Max The Magnificent
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Scorpions, poisonous centipedes, and black widows, Oh My!
Max The Magnificent   9/26/2013 5:33:28 PM
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@William: "When we were not dealing with scorpions, poisonous centipedes, black widows, or the occasional side-winder that would crawl into our lab..."

If only I had a coconut for every time someone had moaned to me about this sort of thing... :-)



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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