which spike version for ri5cy?

we are using the ri5cy core, pulpinov1 branch, and wanted to understand which spike (isa simulator) repository should be taken.

i have found this:
1. is there a specific branch matching the pulpinov1 design version
2. does it have any specific ri5cy compliance, special flags or any other?
3. am i supposed to take any patch to make it match ri5scy, as the toolchain?

for the toolchain, we are taking this :
which i understand patches the original pulp platform toolchain to match the ri5cy.

would appreciate any help on this topic.

Itay K.

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