5i25 & 7i85 new install

The standard 7I85Sx2 firmware will wire the 7I85S
so that step0 is TX0, Dir0 is TX1, Step1 is TX2,
Dir1 is TX3 etc

Also the encoders are in the 7I85S orders

Is that your mesaflash listing?

(that is what it should look like)

Yes, that was the output from the "sudo mesaflash --device 5i25 --readhmid"

Ok so in the 7i85 manual I see TB2 pin11 = TX0
-What does /TX0 mean? (+Dir vs -Dir ?)

So just to confirm linuxcnc to 5i25 , that is the pins I config in the Hal file?
The firmware on the 7i85S then outputs to the pinout in the manual?

Yes /TX0 in the inverted copy of TX0.
This is used for differential wiring
(especially for servos with MHz step rates)

For step.dir and encoder interfaces, you only deal with
stepgen and encoder numbers, not pins

Ok I think I'm getting my head around it.
on the 5i25 side -> hm2_5i25.0.stepgen.00.dirsetup
is then assigned to this linuxcnc function -> [JOINT_0]DIRSETUP
then the 5i25 card takes care of the pass to the 7i85s card and the pins there.

So in the 7i85s manual, I see a pin assigned to TX0 and etc.

-on the 7i85S
So TX are always step gens?
and the QA and QB pins encoders?

What about IO for like a probe or charge pump?

Is there a gap in standard signal lango or something I can read up on?
I'm not able to download the support software for 7i85s, is there where some of this information is?
I do greatly welcome the help and a huge thank you so far.