
This contains images of three decapped chips:

+ AY-3-8910A
	Label markings "AY-3-8910A "8925CCA Taiwan Microchip"
+ AY-3-8912A/P
	Label markings "AY38912A/P 9052 CCA TAIWAN Microchip"
+ AY-3-8913
	Label markings "AY-3-8913 GI 8328 C-A TAIWAN 8418"

These were imaged by Travis Goodspeed, announced in a twitter thread
here:
	https://x.com/travisgoodspeed/status/1839045782676320689

He requests that if these are used by anyone, credit is given to
him for doing the chip decapping.

Note that a plain AY-3-8910 chip (not AY-3-8910A) has been previously
decapped as seen here:
	https://drsvanhay.de/blick-auf-den-chip-soundchip-general-instruments-ay-3-8910/

Higher resolution images of the decaps are possibly available on request.

If someone does analysis of these, especially the differences between the
AY-3-8912 and AY-3-8913, then various Apple II developers would be
interested in hearing about this.  A lot of this research came about
while trying to find out why the AY-3-8913 chips on Mockingboard Soundcard
replicas sound so much worse than other AY-3-8910 and YM chips.

Vince Weaver
vince@deater.net
4 October 2024
