I remember programming locomotive controls with a 8086 back in 1986. The system had 16kbyte SRAM with an option for a 2nd 16kByte. So I put the second SRAM into the socket. Powered up, loaded the program. run it. Writing value<>0 to the second RAM resulted in all being 0 or false. Damn. Checking the program. Reading the  address contents again and again. Eventually RTFM again. 2nd RAM needs a jumper next to it. Put the jumper. Works.

Clue : If you use beer everything will be false.

2nd Clue : The keyboard will become sticky with a Weizen inside. tried that too.