Tried it with PEIE enabled as per 7.1 of datasheet (p. 129):

Code:
INTCON = %11000000
'           bit 7   GIE         Global Interrupt Enable bit
'                                   1 = Enables all active interrupts
'           bit 6   PEIE        Peripheral Interrupt Enable bit
'           bit 5-1     Unimplemented: Read as ‘0’
'           bit 0   INTEDG      Interrupt Edge Select bit
Did the same thing.