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Is it a subtle difference? I don't see a difference in zooming with your changes.
It certainly didn't hurt anything ti have it in.

LIkely the answer is no, hope I am wrong.

I am using linuxcnc 2.7.15 breakout board with printer cable
My X axis has twin rack/pinion drive, motors need to turn in opposite directions. Modifying HAL is beyond me.

I tried reversing the motor phase connections on one driver/motor and the motors still both spun the same direction. Should clarify, both CW and CCW but in sync not opposite as I need.
I have both x axis motors connected to P2 P3 not ideal I realize.

I wonder if it is possible to rearrange the control connectors to reverse one motor? I have not messed with this. The jumpers bringing power to pul+ Dir+ and Ena+  puzzle me. Ena- goes to P2 and Dir- goes to P3.

Thank you.
David

EDIT: I ordered and received binary switches, after some contemplation. They only output in binary - no pins for switch positions - and seem to be the right tool for the job in LinuxCNC with a Mesa 7i73 card. Time will tell.

Weirdly, Mouser doesn't even include this in their "Coded Rotary Switches" section, so finding them was down to luck. The pins are super delicate, so it's pretty clear it was meant to be mounted directly on a PCB. I'm not currently sure how that would work in a DIY console, so I still might get some little breakout PCBs made.

Lorlin BCK1006 pictured below, though BCK1008 would also make a lot of sense, maybe even more sense. It would have more closed circuits than open circuits in the most oft-used positions.

EDIT: I added a graphic to illustrate the alternative that I found during this discussion. A mux switch seems to be the right tool for the job, but existing products, and documentation combined with illustration of their function are basically nonexistent. This is my attempt to create a resource for future me and others to refer to when creating their own mux selector switches.

I am moving from EdingCNC to LinuxCNC.

Sorting out the MPG/pendant, I thought I could just use 1k resistors like in the attached image of the EdingCNC manual, with the 7i73 analog input sensing the resistance value, but I can't seem to find any examples of anyone doing this in LinuxCNC. Here is a screenshot from the EdingCNC manual, that shows what I was planning to do:

@roya
I gave that same 6.12-rc7 image some more test , trying to pinpoint where the glitches come from , for the sake of learning , an i do got this dust collector opi4 ...
Stumble upon the linuxcnc-rio guy , wow , still got 80 pages of post to read + his git .
Back to your 6.12rc7 , tried the 3 deb packages you've post on another image , the headers deb is corrupted by te way .
With same -1Gb img , stopping some unused .services , I do get ''stable'' shutdown now , isolating 3 last cores ,
no impressive latency results of course , but a usable fast enough(no lag) jwm desktop ,no hang ,no oo's , i'll hook up the 7i92 to the bob with it , the opi4/your 6.12rt as a ''one at the time'' purpose job and come back , after reading more about the rio .
Kernel 6.12 is young , worth testing it , opi4 may not be the best sbc candidate , not to mention xulong support , or worse their forum !!!
Thanks again , no rush ,i'll be back .
PJ
edit ; still some random kernel panic on shutdown ,i will try recompiling the dts for opi4 to see if it goes somewhere..