iz8dwf | The 82S100 PLA and its Soviet clone. Let's make a NOS C64 PLA. @iz8dwf | Uploaded September 2020 | Updated October 2024, 1 hour ago.
A quick glance at the famous PLA, the Signetics 82S100 and its close relatives, including the least famous P556PT2 (R556RT2 in latin alphabet).
How we can find and program an original field-programmable PLA and what are the other options (much easier ones) to substitute a broken PLA on a C64 or other digital devices of the past.


C64 PLA Dissected:
ftp://ftp.zimmers.net/pub/cbm/c64/firmware/C64_PLA_Dissected.pdf

Mattis Lind's 82S100 replacement:
github.com/MattisLind/82S100replacement

EPROM to PLA adapter:
vic20.de/html/eprom_pla_8296_und_c64.html

List of Soviet ICs
https://ganswijk.home.xs4all.nl/chipdir/soviet/chips.htm