Serout2 on LCD Shows Junk Characters

[RossWaddell]

If I'm using RA0, do I need to set those registers? Because without them the screen is completely blank:

'****************************************************************
'*  Name    : Test_SPWM.pbp                                     *
'*  Author  : Darrel Taylor                                     *
'*  Date    : 9/30/2006                                         *
'*  Version : 1.0                                               *
'*  Notes   :                                                   *
'*          :                                                   *
'****************************************************************


; LCD serout2 command won't work when using interrupts; need to use
; HSEROUT on chip's USART tx pin instead.



' ***************************************************************
' Pin Connections
' ***************************************************************

' RA0                        -> Serial LCD output
' RA1                        -> Middle arm of trim pot (AN1)
' RC0                        -> LED1
' RC1                        -> LED2
' RC2                        -> LED3

DEFINE OSC          16      ; Set oscillator 16Mhz
;DEFINE OSC           4      ; Set oscillator 4Mhz
DEFINE ADC_BITS      8      ; Set number of bits in result
DEFINE ADC_SAMPLEUS  5      ; Set sampling time in uS
DEFINE ADC_CLOCK     3      ; Set clock source (3=rc)

DEFINE  HSER_TXSTA   20h    ; Set transmit status and control register
DEFINE  HSER_BAUD    2400   ; Set baud rate

' ***************************************************************
' Device Fuses
' ***************************************************************
#CONFIG
   __config _CONFIG1, _FOSC_INTOSC & _WDTE_ON & _PWRTE_ON & _MCLRE_OFF & _CP_OFF & _CPD_OFF
   __config _CONFIG2, _PLLEN_OFF & _STVREN_ON & _BORV_LO & _LVP_OFF
#ENDCONFIG

#DEFINE USE_LCD_FOR_DEBUG   ; comment out for non-debug use

' ***************************************************************
' Initialization
' ***************************************************************

OSCCON   = %01111000        ' 16MHz internal osc
;OSCCON   = %01101000        ' 4MHz internal osc

pause 100

; Use PortA.1 (AN1) for ADCIN (trim pot reading)
ANSELA   = %00000010        ; Analog on PORTA.1 (AN1) only
TRISA    = %00000010        ; Input on PORTA.1 (AN1) only
;ADCON1   = %01110000        ; Left-justified results in 8-bits; Fosc/8 (2uS @ 4Mhz)
ADCON1.7 = 0                ; Left-justified results in 8-bits; Fosc/8 (2uS @ 4Mhz)
ANSELC   = 0                ; Diginal only for all PortC pins
TRISC    = %00000000        ; Make all PORTC pins output

#DEFINE USE_LCD_FOR_DEBUG   ; comment out for non-debug use

#IFDEF USE_LCD_FOR_DEBUG
    LCD_PIN    VAR PORTC.4  ' Alias PORTC.4 as "LCD_PIN"
    LCD_INST   CON 254      ' instruction
    LCD_CLR    CON 1        ' Clear screen
    LCD_L1     CON 128      ' LCD line 1
    LCD_L2     CON 192      ' LCD line 2
    LCD_BAUD   CON 16780    ' Baud rate/mode 2600bps for ILM-216 2x16 character display
;    LCD_BAUD   CON 16468    ' Baud rate/mode 9600bps for ILM-216 2x16 character display
    LCD_PACE   CON 1        ' Optional pace value
#ENDIF

' ***************************************************************
' Includes
' ***************************************************************

INCLUDE "DT_INTS-14.bas"            ; Base Interrupt System
INCLUDE "SPWM_INT.bas"              ; Software PWM module

DEFINE SPWM_FREQ  200               ; SPWM Frequency
DEFINE SPWM_RES   256               ; SPWM Resolution

DutyVars   VAR BYTE[3]              ; DutyCycle Variables
  DutyVar1 VAR DutyVars[0]          ; group them in an array for easy access
  DutyVar2 VAR DutyVars[1]          ; with FOR loops etc.
  DutyVar3 VAR DutyVars[2]

ASM
SPWM_LIST  macro                    ; Define Pin's to use for SPWM
     SPWM_PIN  PORTC, 0, _DutyVar1  ; and the associated DutyCycle variables
     SPWM_PIN  PORTC, 1, _DutyVar2  ; Notice the underscore before variables
     SPWM_PIN  PORTC, 2, _DutyVar3
  endm
  SPWM_INIT  SPWM_LIST              ; Initialize the Pins
ENDASM

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,  SPWMhandler,  ASM,  yes
    endm
    INT_CREATE                      ; Creates the interrupt processor
ENDASM

@ INT_ENABLE  TMR1_INT              ; enable Timer 1 interrupts

adval       VAR  WORD       ; stores ADCIN results  
oldDutyVar1 VAR  WORD 
;_____________________________________________________________________________

DutyVar1 = 0
DutyVar2 = 25
DutyVar3 = 255

#IFDEF USE_LCD_FOR_DEBUG
    HSEROUT [LCD_INST, LCD_CLR]
    pause 5
    HSEROUT ["DutyVar1=", DEC DutyVar1, 13, 10] ' Send text followed by carriage return and linefeed
#ENDIF

Main:
   ADCIN 1, adval
   if adval <> oldDutyVar1 then
      oldDutyVar1 = adval
      DutyVar1 = adval

      #IFDEF USE_LCD_FOR_DEBUG
         HSEROUT [DEC DutyVar1, 13, 10] ' Send text followed by carriage return and linefeed
      #ENDIF
   EndIf
   Pause 100
Goto Main

Edit: Adding

APFCON0.2 = 1               ; Tx on RA0

makes the screen not blank, but it's still gobbledy-gook.