Inline Asm Problem

[mark_s]

Hello group,

I am trying to get an adjustable delay routine that is less than 1us increaments i.e (pauseus). I use to program in assembly and had a working delay routine. It took three machine cycles to decrement the counter by one. Using
a 40mhz it should have a 300ns resolution. It is adjustable by taking a adc reading in pbp and passing the variable to the inline assembly routine. When I compile it in PBP3 it produces some errors. Using a PIC18F25K80. If anyone knows why it won't compile or has an alternate idea, I would be greatful.

Thanks
Mark

See screen capture of error messages

' Name  : Asm delay test
'pic18f25k80  10mhz x 4pll 40mhz
'pbp 3.07
'CONFIGS sec osc set to digital i/o,intoscio off, hs-pll on,SECONDARY OSC OFF, ext intructions off
'configs set in melabs u2 programmer
'------------------------------------------------------
DEFINE OSC 40    '64mhz

REFOCON = 0          'Ref osc off
'--------------------------------------------------    
ODCON = 0          '   OPEN DRAIN OFF , CONNECTED TO VDD
'ADC-----------------------------------------------------		    
ADCON0 = %00000101 ' A/D module enabled, channel 1
ADCON1 = %01110000 '%01110000 Vref = INT 4096, TRIG ctmu, NEG REF VSS
ADCON2 = %10010100 ' Right justified, 12 Tad, Frc clock
ANCON1 = %00000000  'Select Digital or Analog AN8 - AN14
SLRCON = 0 'SLEW RATE STANDARD
'-------------------------------------------------------------
'COMPARATOR      '*********SET TRIS INPUTS
CM1CON = 0 '%11000000    'COMPARATOR 1 on all pins external
CM2CON = 0 '%11000000    'COMPARATOR 2 on all pins external              
CVRCON = %00100111    'COMPARATOR vref off
'--------------------------------------------
CTMUCONH = 0  'Charge time measurement unit off
'MSSP-------------------------------------------
SSPSTAT = %00000000   'TX IDLE LOW,SAMPLE MIDDLE
SSPCON1 = 0'%00100001 ' ENABLE MSSP,CLK IDLE LOW,FOSC/4
'-----------------------------------------------------------------------
TRISA = %00000111
TRISB = %00000000
TRISC = %00010000

AUX1 VAR LATC.0  ' output
Delay1 var word 
Temp1  var word
adc_an1 var word


'-------------------------------------------
mainloop:

gosub get_adc 

LATC.0 = 1 'Portc.0 High

; Delay routine 3 cycles for each count. Number of loops = adc read
; at 40mhz delay should have 300ns resolution
ASM      
   movfw  _Delay1
   movwf  _Temp1
   decfsz _Temp1,1
   goto   $-1
Endasm
LATC.0 = 0 'Portc.0 Low

pauseus 500

   Goto mainloop
'------------------------------------------      
get_adc:  '12bit
   ADCON0 = %00000111  'SAMPLE AN1 
                   '
 WHILE ADCON0.1 = 1  'WAIT FOR CONVERSION
    WEND
     ADC_AN1.HIGHBYTE = ADRESH
     ADC_AN1.LOWBYTE  = ADRESL
        DELAY1 = 1 + adc_an1  '1 to 4097
Return
   End