satcat5 VS verilog-ethernet

I needed 128-bit and 256-bit integers on an embedded project recently.

In short, it was for fixed-point digital signal processing. The raw input and output samples were int64_t. We needed to add, subtract, multiply, and accumulate these to do filtering and linear regression with no loss of precision.

Conventional bigintegers weren't an option because the target application doesn't allow heap allocation. So we rolled our own [1] stack-allocated, fixed-width big integer class.

[1] https://github.com/the-aerospace-corporation/satcat5/blob/ma...

And here's an open-source implementation I wrote a few years back. You can skip the part at the end that handles variable-length trailing bytes, since you have a fixed-width input.

My SatCat5 project also has a few options. Anything under src/vhdl/common/cfgbus_* can be connected to AXI or Wishbone with a simple adapter.

For an all-digital solution, here's an NCO that generates an arbitrary-frequency square wave from a numeric counter.

Tcl, not sure, but I have done it with makefiles. See https://github.com/alexforencich/verilog-ethernet/tree/master/example/C10LP/fpga.

For that part I think you need to use the software from silicon labs (might be skyworks now) to generate the stuff you need to write to the registers. Then, you can use something like https://github.com/alexforencich/verilog-i2c/blob/master/rtl/i2c_init.v. See https://github.com/alexforencich/verilog-ethernet/tree/master/example/HTG9200/fpga_10g for an example that targets the Si5341 specifically.

For a personal project I'm trying to send data via Ethernet from my laptop into the FPGA, where it has some filtering and other processing done to it, then back into my laptop. I've been trying to get this repo to work, but there's a problem: my ancient macbook can't run Quartus, so I need to use campus PCs to build the project and program the board, but I don't have permissions to successfully run the makefiles that build the project.

No there's none. Not in this post at least, but it certain is being used. If you're interested in that, follow my progress at https://github.com/alexforencich/verilog-ethernet/issues/146 (or stay tuned/reach out to Acceleration Robotics for early previews and support) for a 10G NIC on the KR260.

So, im trying to understand the UDP implementation in verilog-ethernet. In particular I am looking into the ARP Cache and have a query.

I've been studying u/alexforencich's ethernet library since I'm working on a similar project. I've been noting his interesting design style. When I think about a solution for a problem, I immediately naturally thing about a sequential design whereas he has tons of combination logic in his designs.

I was studying Alex Forencich's FCS verilog and noticed the following always block:

This repo support the VCU108 for a Verilog ethernet connection: https://github.com/alexforencich/verilog-ethernet