I think you were looking for 'logic'

https://linuxcnc.org/docs/stable/html/man/man9/logic.9.html

On Sat, Jul 18, 2026, 12:17 PM Nicklas SB Karlsson <[email protected]> wrote:

> Had need for an or component with more than two inputs and therefore
> spent most of the day implement one with configurable number of inputs
> for instances.
>
> Attached is source .c file and .gif picture of example how to use it.
> Default with no extra config argument is a two input or component named
> or.0 if it work as supposed to. Argument config= is comma separated lit
> used to specify number of inputs for the or gates. Adding a text after
> the number then this is used instead of number.
> With name config argument look a lit bittle ugly and an improvement
> would be to allow space after number before name for pin.
>
> If someone want to include into the source it would be great?
> Otherwise I will sooner or later make a pull request?
> It should be simple to modify this into and and xor variant and will
> probably also make this at the same time if I make a pull request.
> Ideas for or improvement how parameters for configuration is entered is
> appreciated.
>
>
> Have only done a very fast test but it seems to work supposed to. If
> anybody want to try it there is a need to make changes in the files
> srd/Makefil and src/Makefile.inc.in
>
>
> Regards Nicklas Karlsson
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