A new generation of PLA for the C64 will soon be available.
Posted: Wed Jul 29, 2015 6:47 pm
The original Commodore PLA chip used to much juice, and created to much heat. Some of the new EEPROM based chips can cure this problem. Some have had very real compatibility issues, but even that is old news now. Check this news out.
http://www.melon64.com/forum/viewtopic.php?f=12&t=2370
http://www.melon64.com/forum/viewtopic.php?f=12&t=2370