The Casio SA-8 is a Small Form-Factor PCM sample based keyboard from the 80’s. It uses an 8-bit chip known as the OKI M6387-11 and had an incredibly realistic sound for its time even preceding General Midi. It had only 4 drums that the user could trigger although having 20 drum samples it could use along as a shaker being used for a button sound. It had 19 rhythm loops and 11 “Super-Accompaniment” loops. It had 20 sounds you could use being “11: Piano (default on startup), 12: Elec Piano, etc…”