thanks.im taking advantage while there are still a few games for this console i want to play, making adjustments as i go(and while its a holiday season). the praise is not all mine to take though, the codes are already in the source, its just partially implemented. what i did were things already implemented in other of mednafen’s core, which some of it are from Tatsuya specifically from pce/sgx cores.
will be posting an update which enables the buggy cdimage_cache(which still helps some of the audio stuttering-the bug is it will not clear the ram used for cache when core exits), and change in initial/last scanline that refreshes screen after changing so images wont appear stretched that requires you to restart core.