OKI M5255
This page was last modified 11:57, 21 May 2021 by Gdx. Based on work by Mars2000you.
OKI M5255 chip

The OKI M5255 is a clone of the Microchip AY-3-8910A made in Japan.

This chip is not 100% compatible. Internal registers are not initialised by the RESET signal, and the volume registers cannot be read by software.