How can I view/inspect my Mac’s Parameter RAM (NVRAM)?
To clarify, for PowerPC based Macs, this memory was called PRAM, but for Intel based Macs, the proper name is NVRAM.

To show the contents of the NVRAM or even manipulate them, you can use the nvram shell commando in Terminal. For info on usage, execute man nvram.

If you just want to display the entire contents of the NVRAM, you can execute it with th -p parameter:

nvram -p