help with PIC16F628 conditional program

[joseph]

i'm having problem working with a conditional program,

@ DEVICE PIC16F628A, INTRC_OSC_NOCLKOUT, WDT_OFF, PWRT_OFF, MCLR_OFF,PROTECT_ON,CPD_ON, BOD_OFF, LVP_OFF

DEFINE OSC 4

CMCON = 7
VRCON = 0


TRISA = 95
TRISB = 0
PORTB = 0

GS1  var PORTA.0
GS2  var PORTA.1
TEMP var PORTA.2
FWD  VAR PORTA.3
REvs VAR PORTA.4
Neut var PORTA.7

forward  var PORTB.0
revers   var PORTB.1
one      var PORTB.2
two      var PORTB.3
three    var PORTB.4
starterd var PORTB.5


start: IF Neut = 1 then
        low forward
        low revers
       else
        if (FWD = 1) and (REvs = 0) then
        low revers
        high forward
       else
        low revers
        low forward
        if (FWD = 0) AND (REvs = 1) then
        low forward
        high revers
        endif
        endif
endif
goto start 
end

i need to monitor all the possible conditions in my input then ouput the right combination following this table.

------ INPUTS-------|-----OUTPUTS-----
FWD---Neut--REvs-|---forward---revers
--0-------0------1---|------0-----------1
--1-------0------0---|------1-----------0
--0-------1------0---|------0-----------0
--0-------1------1---|------0-----------0
--1-------1------0---|------0-----------0

also i have problem on making PORTA.7 work as an input

i plan to add more functions when this part worked

TIA.