The neatPLA is one of the most compatible PLA replacement for your longboard Commodore 64.
When your PLA fails, everything fails. After all, the PLA is one of the most common chips in a C64 to fail.
Now you have a cheap, reliable and compatible option to get you back up and running.
The neatPLA only works on longboard C64's (Assy 326298, 250407. 250425 and 250466).