CPS-1 Frog Feast has sound.

I've added sound to the CPS-1 version of Frog Feast. It does not have the music, since it is too big to fit in the sound roms.

This was very easy to implement. The sound table is located at the front of the sound roms, and not in the Z80 roms.

The sound format is 4 Bit Dialogic ADPCM at 8000 hz 16 bit mono. This is almost the same as the X68000. The CPS-1 uses an earlier version of the OKI chip used in the X68000.

The source code and build instructions have been released.