Using "If then" and "and" together

[Demon]

Using PBP 2.60C, MCSP v2.2.1.1, MPASM v5.46, PIC 18F46K22.

62 bytes:

@   __CONFIG    _CONFIG1H, _FOSC_HSHP_1H & _PLLCFG_OFF_1H & _PRICLKEN_OFF_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
@   __CONFIG    _CONFIG2L, _PWRTEN_ON_2L & _BOREN_SBORDIS_2L & _BORV_285_2L
@   __CONFIG    _CONFIG2H, _WDTEN_OFF_2H
@   __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _HFOFST_OFF_3H & _MCLRE_EXTMCLR_3H
@   __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
DEFINE OSC 20
ANSELA = 0
ANSELB = 0
ANSELC = 0
ANSELD = 0
ANSELE = 0
TRISA = %00000000
TRISB = %00000000
TRISC = %00000000
TRISD = %10000000
TRISE = %00000000

CODE_ONE        VAR PortB.1
CODE_TWO        VAR PortB.2
CODE_THREE      VAR PortB.3
CODE_FOUR       VAR PortB.4
CODE_FIVE       VAR PortB.5

  IF CODE_ONE = 13 THEN
    IF CODE_TWO = 13 THEN  'With an oh
      IF CODE_THREE = 16 THEN
        IF CODE_FOUR = 21 THEN
          IF CODE_FIVE = 32 THEN
            'Correct code
          ENDIF
        ENDIF
      ENDIF
    ENDIF
  ENDIF
END

138 bytes:

@   __CONFIG    _CONFIG1H, _FOSC_HSHP_1H & _PLLCFG_OFF_1H & _PRICLKEN_OFF_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
@   __CONFIG    _CONFIG2L, _PWRTEN_ON_2L & _BOREN_SBORDIS_2L & _BORV_285_2L
@   __CONFIG    _CONFIG2H, _WDTEN_OFF_2H
@   __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _HFOFST_OFF_3H & _MCLRE_EXTMCLR_3H
@   __CONFIG    _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
DEFINE OSC 20
ANSELA = 0
ANSELB = 0
ANSELC = 0
ANSELD = 0
ANSELE = 0
TRISA = %00000000
TRISB = %00000000
TRISC = %00000000
TRISD = %10000000
TRISE = %00000000

CODE_ONE        VAR PortB.1
CODE_TWO        VAR PortB.2
CODE_THREE      VAR PortB.3
CODE_FOUR       VAR PortB.4
CODE_FIVE       VAR PortB.5

  IF CODE_ONE = 13 and CODE_TWO = 13 and CODE_THREE = 16 and CODE_FOUR = 21 and CODE_FIVE = 32 THEN
    'Correct code
  ENDIF
END

I know, Port be is defined as output and used as input (noticed after test), but that has no impact on test significance.

More than twice as big using single IF, nested IF is definitely more efficient. I remember reading about that somewhere recently too, can't remember where.

Robert