In the following subroutine, why won't the RCIE bit in the PIE1
register get set?  When I step through the program, it will just not
set it.  INTCON,PEIE is enabled in a previous routine.
SPEN & RCEN are set as well.

 My program would not go my Interrupt handler when I would
receive a character.  It's because this bit is not set. But cleary,
I try to set it.  What gives?

 init_serial

    banksel SPBRG
    movlw D'31'                  ; set baud rate for 9600 @ 20 MHz
    movwf SPBRG

    banksel TXSTA
    bcf  TXSTA,SYNC     ; set for asynchronous mode
    bsf  TXSTA,TXEN     ; enable serial transmission
    bcf  TXSTA,BRGH     ; set for low speed (trust me)

    bcf  PIE1,TXIE          ; disable transmit interrupts

    banksel RCSTA
    bsf  RCSTA,SPEN     ; set for serial uart mode
    bsf  PIE1,RCIE          ; enable receiver interrupts
    bsf  RCSTA,CREN     ; enable receiver

    return

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