Serial Bootloader for a PIC18F14K22 chip
Written by VegiPete	picprog.strongedge.net

Hardware:
 Internal RC OSC with 4x PLL enabled (Fosc = 64MHz)

 RB4 - !CTS flow control output - outputs low when PIC is ready to receive
 RB5 - RX - Serial in
 RB7 - TX - Serial out
 RC5 - LED
	
Resources Used:
 Serial Port, configured for 38400 baud, 8N1, hardware handshaking

CONFIGURATION WORD SETUP:

     ;Setup CONFIG1H
     CONFIG FOSC = IRC, PLLEN = ON, PCLKEN = OFF, FCMEN = OFF, IESO = OFF
     ;Setup CONFIG2L
     CONFIG PWRTEN = ON, BOREN = OFF, BORV = 30
     ;Setup CONFIG2H
     CONFIG WDTEN = OFF, WDTPS = 1
     ;Setup CONFIG3H
     CONFIG MCLRE = ON, HFOFST = OFF
     ;Setup CONFIG4L
     CONFIG STVREN = OFF, LVP = OFF, BBSIZ = OFF, XINST = OFF
     ;Setup CONFIG5L
     CONFIG CP0 = OFF, CP1 = OFF
     ;Setup CONFIG5H
     CONFIG CPB = OFF, CPD = OFF
     ;Setup CONFIG6L
     CONFIG WRT0 = OFF, WRT1 = OFF
     ;Setup CONFIG6H
     CONFIG WRTB = OFF, WRTC = OFF, WRTD = OFF
     ;Setup CONFIG7L
     CONFIG EBTR0 = OFF, EBTR1 = OFF
     ;Setup CONFIG7H
     CONFIG EBTRB = OFF

The User program must start with the following instructions:
	ORG	0x0000  	; Reset vector start address 0
	goto	UserProg	; Start of user program - changed by bootloader
	goto	UserProg	; Start of user program

The bootloader occupies flash memory locations 0x3B00 to 0x3FFF.
Ensure that the user program does not use any of these locations.