Not exactly effects... but if you like chip pron, Ken Shirriff has deconstructed the TI SN76477 sound effects chip:
http://www.righto.com/2017/04/reverse-engineering-76477-space.html
regards, Jack
Thanks, Jack.
Thomas Henry did some good work with this chip, nice sounds including un-synth like sounds.
Have a look here:
http://www.birthofasynth.com/Thomas_Henry/TH_main.html
Maarten
Thanks.
I did several projects with Tom back in the late 1990s that were featured in Popular Electronics and Nuts-and-Volts magazines, but none of then used the SN76477.
Best regards, Jack