There were mostly zero real meaningful improvements to the PCE core except for one small change in 1.29.0 (pushed January 2022) -
PCE, PCE-Fast: Initialize VCE color table memory at power-on to roughly(without probabilistic bit randomness) match test results from a PC Engine Duo instead of just zeroing it; fixes unreadable letters in the password entry screen of "Order of the Griffon".
There were mostly zero real meaningful improvements to the PCE core except for one small change in 1.29.0 (pushed January 2022) -
PCE, PCE-Fast: Initialize VCE color table memory at power-on to roughly(without probabilistic bit randomness) match test results from a PC Engine Duo instead of just zeroing it; fixes unreadable letters in the password entry screen of "Order of the Griffon".