The simulator says that the data pins are giving the values I expect (my
original table was data from the simulator), but if it matters here are my
code snippets:

SendByteToLCD:
		;send the two nybbles to the LCD display
		movwf TempByteToLCD
		swapf TempByteToLCD, 0 ;the LCD expects the high nybble
first
		call SendNybbleToLCD
		movfw TempByteToLCD
		call SendNybbleToLCD
		return

SendNybbleToLCD:
		;send the low nybble of w to the LCD display.
		andlw b'00001111' ;only the low four bits of WREG count
		banksel PORTA
		movwf PORTA ;send the four bits out of the I/O port
		nop
		nop

		;raise the E line
		bsf LCD_E
		nop
		nop

		;lower the E line
		bcf LCD_E

		;wait 160us between commands
		movlw d'160'
		call Wait_WREG_Microseconds
		return



> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
> Behalf Of Jinx
> Sent: Sunday, June 10, 2007 5:52 PM
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] Interfacing to a Hitachi 44780 LCD in 4-bit mode
> 
> How are you writing two nybbles ? LSN, MSN, Busy ?
> 
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