Charlie,

When trying to compile this complete program:

$mod51


org 00h


Program_Initialize:

MOV A, #00000000b
MOV R1, #0X08

Clock_ADC:

RRC A
MOV P1.0, C
SETB P1.1
CLR P1.1

DJNZ R1, Clock_Adc
RET

end



I get the following error :
0000 7400 9 MOV A, #00000000b
0002 7908 10 MOV R1, #0X08
****--------------------------------------------------^
****ERROR #4: Illegal digit for radix