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Houston, we have a problem, i ordered the io port expander (mcp23017) in wrong package so28 instead of ssop28, and the zener diodes is missing from the order, and i missed the i2c port pullup resistors from the design this need a littlebit of workaround, but the outputs are working now (tbd 62783). Tested with 5v and 24v without load, i messed up 1 of the w5100s-evb-pico-s usb port by pulling the whole microusb inside out but now this programmed trough the SWD debug port, the positive side is i do not need to printing debug info in the usb serial port.

I can give it a try, could you please share more details on how you got ethercat installed so i can reproduce your setup?

Just gone 3pm here in Sydney.

No something interesting.

I worked on a little project using an FPGA dev board to run MESA's hostmot2 firmware. First attempt was based on the 7c81 using either SPI (raspberry pi) or EPP (best on motherboard based parallel ports). The issue with the board I used is that the EEPROM need to be changed and the headers were already soldered on.
That same hardware can also be used with the LinuxcncRIO project.

Another project I had a go at was modding the 7i90 Smart serial firmware to support 4 encoders to run on a dev board.

For my latest I've grabbed a different dev board (eeprom is correct size & bought with the headers unslodered, but this time I'll be trying a Ethernet interface, chip is same as use on the Mesa products, so no having to rewrite a driver, which requires a couple of steps, first being working out the instructions of the softcore, working how the driver talks to the chip and then how it integrates with the rest.

Some pics, 2x17 ports from breakout boards (mesa 25 pin daughter boards can be used as well) and 4 extra pins for 2 smart serial ports or extra I\O.

First off is the FPGA from aliexpress:
 

The Ethernet board, this is experiment only, the FPGA board sits on top, disregard the type of 2x25 headers they can be changed to suit. Should have the boards in a couple of weeks.
 

One of the daughter boards from the orignal project.
 

Pretty.

cnc@raspberrypi:~$ sudo apt-add-repository "deb buildbot2.highlab.com/debian/ bookworm master-uspace 2.9-uspace"
sudo: apt-add-repository: command not found

Congratulations on your results so far.

I have never tryied LinuxCNC in Raspberry Pi. But, based on my experience in PC based LCNC, I don't think you will ever have any reliability issues running it in step/dir. LinuxCNC is a hell of a reliable motion controller.