clarifications on sdext and sdtrig extensions

[aap-sc]

Hi!

Looking at the latest version of the specification (1.0) I see that several isa extensions are defined: Sdtrig and Sdext. Now, looking at the older version (0.13.2) I don't see that the Sdtrig or Sdext being used at all.

Does that mean that whenever I see in the document (like RISC-V profile description) Sdtrig or *Sdext - these documents refer to 1.0 specifically? Does this mean that implementations that have debug/trigger modules that are compliant with 0.13.2 version of the spec do not really implement Sdtrig and Sdext?

[pdonahue-ventana]

That is my understanding of how RISC-V would treat these extensions.

Both 0.13 and 1.0 are standalone documents. If you implement 0.13 then you comply with the requirements of that spec which has no Sdext or Sdtrig. If you implement 1.0 then you comply with the requirements of that spec which may involve implementing Sdext and/or Sdtrig.