forth-cpu
fpga-toolchain
| forth-cpu | fpga-toolchain | |
|---|---|---|
| 2 | 4 | |
| 315 | 255 | |
| - | - | |
| 2.6 | 4.4 | |
| about 2 years ago | over 2 years ago | |
| VHDL | C | |
| - | GNU General Public License v3.0 only |
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forth-cpu
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Designs targeting specific boards?
Like in my head I thought having a piece of verilog and having enough LUTs in any board would do the thing, so what meant here? An example https://github.com/howerj/forth-cpu mentions that the target board is a specific Xilinx.
- Forth SoC Written in VHDL
fpga-toolchain
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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?
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)
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https://np.reddit.com/r/FPGA/comments/mro9hr/using_hosc_core_lattice_radiant_ice40up5k/gvsk3vg/
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
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Forth SoC Written in VHDL
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.
What are some alternatives?
upduino-projects - Various VHDL projects I've worked on for the Upduino v2.0 and v3.0
neo430 - :computer: A damn small msp430-compatible customizable soft-core microcontroller-like processor system written in platform-independent VHDL.
es4 - Code for Tufts ES4 Intro to Digital Electronics
neorv32 - :rocket: A tiny, customizable and extensible MCU-class 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL.
sdram-fpga - A FPGA core for a simple SDRAM controller.
fpga-fft - A highly optimized streaming FFT core based on Bailey's 4-step large FFT algorithm
VHDL-Guide - VHDL Guide
pocket-cnn - CNN-to-FPGA-framework for small CNN, written in VHDL and Python
Arcade_Galaga - Galaga Arcade Core
Flo-Posit - Posit Arithmetic Cores generated with FloPoCo
AXI4 - AXI4 Full, Lite, and AxiStream verification components. AXI4 Interface Master, Responder, and Memory verification components. AxiStream transmitter and receiver verification components