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private_island

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1 points·by private_island·5 mesi fa·0 comments

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1 points·by private_island·10 mesi fa·0 comments

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1 points·by private_island·11 mesi fa·0 comments

Open Source and FPGA Maker Board for Networking

privateisland.tech
49 points·by private_island·anno scorso·7 comments

comments

private_island
·5 mesi fa·discuss
MSFT is the worst ever with the possible exception of Google. I avoid both like the plague.
private_island
·5 mesi fa·discuss
And I still prefer my CDs and albums over streaming music, especially Amazon's crappy Prime music that decides to play Barbara Streisand while I'm trying to listen to a mix of John Mayer. I assume this is to get me to upgrade to the expensive unlimited subscription. Why bother when I already own most of what I truly like.
private_island
·anno scorso·discuss
Thank you for all the great comments and feedback so far. Note that Betsy uses an Altera Cyclone 10 LP (not GX). This is a low cost, general purpose FPGA. The Ethernet PHY interface is RGMII, which utilizes 5 bits of parallel DDR + clock instead of SERDES.

As many of you probably know, SERDES and specialized PCS/CDR blocks will get you well past 1 GigE, but 1 GigE for RGMII is challenging with 125 MHz single-ended traces.

The project compiles super fast with the Quartus tools and Signal Tap enabled with several active configurations. Quartus bundles the Questa simulator, so there is a great environment for simulation.

Regarding Certus-NX, this indeed would also be a great choice. Lattice does a very nice job exposing their I/O primitives, and I believe the RGMII DDR could be instantiated directly in the I/O cells for both input and output (this could definitely be accomplished with the earlier ECP5). We actively design with Certus-NX, and a future Betsy revision using it is very possible.