Hi Ben,

The only problem is that if you don't read RCREG, the USART will stop after receiving 2 bytes. Then it'll never see a framing error.

A very simple interrupt routine could solve that though.
Just a quick example...
Code:
CREN   VAR RCSTA.4
FERR   VAR RCSTA.2
OERR   VAR RCSTA.1
RCIE   VAR PIE1.5
Dummy  VAR BYTE

ON INTERRUPT GOTO USART_Handler
RCIE = 1             ; Enable USART RX INTs

Main:
    IF FERR THEN
        FERR = 0
        TOGGLE LED   ; Do something here
    ENDIF
GOTO Main

DISABLE
USART_Handler:
    IF OERR then     ; Clear Overrun Errors 
        CREN = 0
        CREN = 1
    ENDIF
    Dummy = RCREG    ; Empty USART Buffer and Clear RCIF
RESUME
ENABLE
HTH,