LinuxCNC + Orange Pi (allwincnc)

Rockchip3399 has an integrated Cortex M0 so these might also be ale to run LCNC and hardware step without external hardware:
store.pine64.org/?product=rockpro64-4gb-single-board-computer

git.theobroma-systems.com/rk3399-cortex-m0.git

opensource.rock-chips.com/images/6/60/Ro...et_V1.6-20170301.pdf

www.theobroma-systems.com/rk3399-q7-user...ual/04-software.html

The board is also equipped with a PCIe x4 open ended slot, so you could use Mesa over PCIe, Ethernet or SPI if needed.

The integrated microcontroller uses a different core than the ones used in the Allwinners but the code could be adapted.

great job mx_master..i have test it, that was works..orange pi 2 H3 both GPIO and ARISC work very nice. put step generator on my oscilloscope, the signal is uniformly god even at 400khz.

now im planing to build H6 RTkernel from armbian config, but not success yet..

h3 core is not fast enough to run linuxcnc, im get bad lag runing gmoccapy and gscreen. i think h6 is more promissing, i was test h6 smoothly run gmoccapy in simulation mode (dont have rt kernel yet), h6 has more powerfull computation power and much higher clock.

project's repo already contains the PREEMPT_RT kernel for H5/H6 (arm64). Use the install_rt_kernel.sh to install it.

But there's no gpio/arisc support for the H6 now. And there's no arisc support for the H5 (it has some issues with arm trusted firmware using arisc's memory).

MX_master, i was try your PREEMPT_RT (arm64) kernel on H5 running fine n smooth, but doesnt work on H6. dont know why, but my h6 boot into initrams mode with your 64bit kernel