I see. I agree with you that it is better to enable the 
boost converter PWM after the USB enumeration, i.e., to
un-comment the following three lines of codes.

;	call	VppInit		; Initiate Vpp PWM
;	call	VppOff		; Turn Vpp off
;	call	VppHigh		; Set Vpp to 13v (when it's turned on)

Regards,
Xiaofan

;***************************************************************
;Version 2.02
Main
	movlw	.30		; delay 16 uS to wait for USB to reset
	movwf	W_save		; SIE before initializing registers
	decfsz	W_save,f	; W_save is merely a convienient register
	goto	$-1		; to use for the delay counter.
	...
  	pagesel InitUSB
	call	InitUSB		; Initialize USB communication.
	 
;	call	VppInit		; Initiate Vpp PWM
;	call	VppOff		; Turn Vpp off
;	call	VppHigh		; Set Vpp to 13v (when it's turned on)
	call	VddOn			; Turn Vdd on
	call	InitCommandTable
	call	PopInit		; Initialize Popbyte variables
	call	TxInit		; Initialize transmit variables

MainLoop
	call	ServiceUSB	; see if there are any USB tokens to process
	...



;***************************************************************
;Version 1:
Main
	...
	pagesel	InitUSB		
	call	InitUSB		; Initialize USB communication.
	
	pagesel	VppInit
	call	VppInit		; Initiate Vpp PWM
	call	VppOff		; Turn Vpp off
	call	VppHigh		; Set Vpp to 13v (when it's turned on)
	call	VddOn			; Turn Vdd on
	call	PopInit		; Initialize Popbyte variables
	call	TxInit		; Initialize transmit variables

MainLoop
	call	ServiceUSB	; see if there are any USB tokens to process
	...

-----Original Message-----
From: WH Tan [mailto:tanwh@notes.src.global.sharp.co.jp]
Sent: Thursday, July 14, 2005 5:38 PM
To: Microcontroller discussion list - Public.
Subject: RE: [PIC] PICKIT 2 (was PICKit1 & PIC18F2550)


No. Surely I didn't mean that. You can't do the programming with those lines
commented out.

What I mean is somewhere 10+ lines after the label 'Main'. If I remember
correctly, I saw in earlier version source it's not commented out.

Best regards,
WH Tan
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