journal 2026-05-02

P36 gets the first compliance gap sweep

p36riscvcomplianceact4

After the clean P36 harden, the useful question was no longer “can this RV32IM core pass the I and M batches?” It can. The useful question became “what is the first official-test wall after that?”

So P36 now has a compliance addendum instead of spawning a new project just for packaging:

suiteresult
ACT4/Sail rv32i/IPASS=39 FAIL=0 NOT RUN=0
ACT4/Sail rv32i/MPASS=8 FAIL=0 NOT RUN=0
ACT4/Sail rv32i/ZicsrPASS=0 FAIL=6 NOT RUN=0
ACT4/Sail rv32i/ZifenceiPASS=0 FAIL=1 NOT RUN=0
Full RISC-V compliancePARTIAL

The new result file is projects/36_rv32im_divider_sign_stage/compliance/SWEEP.md.

The failure shape is useful. All six CSR instruction forms fail in the ACT4 self-check harness, which means the next real architecture project should close full Zicsr behavior instead of adding unrelated ISA features. fence.i also fails as its own extension-level test, so it should be handled explicitly after the CSR work.

Everything else remains honest NOT RUN: atomics, compressed, bitmanip, floating point, cache-block operations, counters, crypto, supervisor mode, PMP, virtual memory, delegation, and full privileged compliance.