TNDLPT is a parallel port sound card that uses the SN76489 soundchip. It took a long time to achieve sufficient software support. I think now the project is ready to be published. Thanks to DOS software drivers, it can be used to play many DOS games that support Tandy sound.
it is available now as solder kit or presoldered board at https://www.serdashop.com/TNDLPT
Demo of using TNDLPT with the dos game Zeliard : shows TNDLPT TSR config, game config and then game playing
See a soldering video demo here :