This week, I completed the full RTL implementation of the Ricoh 2A03 CPU core and successfully integrated it with the VCS testbench environment. The entire instruction set has been implemented and passes the primary assembly test suite, confirming baseline functional correctness. In addition, I verified correct behavior across key subsystems including instruction decode, ALU operations, control flow, and memory interface logic.
However, extended validation across several additional test sets revealed edge-case inconsistencies that require further debugging and refinement. Over the next week, I will focus on resolving these remaining issues, improving coverage across corner cases, and strengthening regression stability to ensure robust and cycle-accurate behavior across all validation scenarios.