Error: PCICR was not declared in this scope

All of the interrupt constants in the code fragment below are throwing the same error as mentioned in the thread title. I’ve reduced the code to a bare minimum and still get the error:

void setup() 
  PCICR |= (1 << PCIE2);                      // Interrupt service code
  PCMSK2 |= (1 << PCINT18) | (1 << PCINT19);


void loop() 

I read Nick’s suggestion about a data definition at the top of the file…same error. I’ve gone out of the IDE, reloaded it…same error. I rebooted…same error. The strange thing is that I had the code compiling with the two interrupt assignments before and it was working fine. I’ve tried adding various includes that I thought might help…no such luck. I wish I could remember the exact change I made that broke it, but I don’t.

Any ideas?

I found my error. Somehow I managed to select an ATtiny85 chip for the Board when I'm using an UNO.

Never mind...