Fpga-toolchain Alternatives

fpga-toolchain reviews and mentions

• I have recently purchased a xilinx VU9P based board. I'm a complete noob to vhdl and fpga, but I have extensive experience in c/c++. Do I need to purchase the vivado software or is there an opensource stack I can use?
  1 project | /r/FPGA | 13 May 2021

  I dont believe any open source tools cover everything that Vivado does for Virtex Ultrascale Plus. Making the bitstream, and likely place and route will need to be done with Vivado. But you can synthesize and simulate with a variety of tools. There isnt a single open stack but this collection is nice: https://github.com/YosysHQ/fpga-toolchain

• Using HOSC_CORE (Lattice Radiant, Ice40up5k, Synplify Pro, VHDL)
  3 projects | /r/FPGA | 24 Apr 2021
• https://np.reddit.com/r/FPGA/comments/mro9hr/using_hosc_core_lattice_radiant_ice40up5k/gvsk3vg/
  3 projects | /r/backtickbot | 24 Apr 2021

  That'll give you the 48MHz clk. In the open source toolchain, you'd just change HSOSC to SB_HFOSC. More information about how to use the open source toolchain for VHDL (ghdl + yosys + icestorm + nextpnr) can be found in a few repos: - https://github.com/nobodywasishere/upduino-projects - https://github.com/controversial/es4 - https://github.com/YosysHQ/fpga-toolchain

• Forth SoC Written in VHDL
  2 projects | news.ycombinator.com | 18 Feb 2021

  It is (I think) much better now - it is ghdl as a plugin synthesising to yosys IR. The nightlies from https://github.com/YosysHQ/fpga-toolchain have it all ready to go.

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