I use
*   hardware.inc*
to define all pins and hardware related stuff.
And
*#include hardware.inc*
in every file it is needed.

Here a sample:

    ;
    ;       Unico posto in cui si possono definire
    ;       gli I/O del micro_processore

            errorlevel      -302
            errorlevel      -312

            PROCESSOR   PIC16F88
    #include p16f88.inc

            Extern  X, Y, U1, U2
    ;       Extern  U3, U4
            Extern  W_TEMP, timer1, timer2, timer3

    ;Oscillatore interno a 8 MHz
    Clock           EQU     .69     ;Base dei tempi: 100 us - Prescaler 1:1

    ;cOSCTUNE       EQU     B'00000000'     ;
    cOSCCON         EQU     B'01110000'     ;Usa oscillatore come CFG, 8 MHz
    ;cOSCCON        EQU     B'01010000'     ;Usa oscillatore come CFG, 2 MHz

    TimeBase1       EQU     .200    ;Timer2 -> 20 ms
    TimeBase2       EQU     .100    ;Timer3 -> 2 s

    FrequenzaPWM            EQU     .255
    #define PWMHigh 0

    ;----------------------------------------------------------
    ;               PORTA
    tris_a  EQU     b'00000001'     ;TRIS
    pwon_a  EQU     b'00000000'     ;stato I/O (PORTA)

    #define  in_trimmer              PORTA,0         ;2  AN0
    ;#define unused                  PORTA,1         ;3  AN1
    ;#define unused                  PORTA,2         ;4  AN2
    ;#define unused                  PORTA,3         ;5  AN3
    ;#define unused                  PORTA,4         ;6 
    ;#define unused                  PORTA,5         ;7 
    ;#define unused                  PORTA,6         ;10
    ;#define unused                  PORTA,7         ;9  

    cADCON0         equ     B'10000001'     ;0: enable conversion
                                            ;1: unused
                                            ;2: W1 = start / R = status
                                            ;5-3: selezione canale
                                            ;7-6: ADCS1-0 = base dei
    tempi (16/32 Tosc)
    Canale0         equ     cADCON0 & B'11000111' | B'00000000'
    Canale1         equ     cADCON0 & B'11000111' | B'00001000'
    Canale2         equ     cADCON0 & B'11000111' | B'00010000'
    Canale3         equ     cADCON0 & B'11000111' | B'00011000'
    Canale4         equ     cADCON0 & B'11000111' | B'00100000'

    cADCON1         equ     B'00000000'     ;0-3: unused
                                            ;5-4: vref
                                            ;6: ADCS2= base dei tempi
                                            ;7: ADFM=1 risultato
    giustificato verso il basso
    ;Base dei tempi A/D
    ;ADCS2-0 = 101  16 Tosc
    ;ADCS2-0 = 010  32 Tosc

    cANSEL          equ     B'00000001'

    ;----------------------------------------------------------
    ;               PORTB
    tris_b  equ     b'00011110'     ;TRIS
    pwon_b  equ     b'00000000'     ;stato I/O

    #define out_pwm                 PORTB,0 ;21
    #define in_dip1                 PORTB,1 ;22
    #define in_dip2                 PORTB,2 ;23
    #define in_dip3                 PORTB,3 ;24
    #define in_dip4                 PORTB,4 ;25
    ;#define unused                 PORTB,5 ;26
    ;#define icsp_pgc               PORTB,6 ;27
    ;#define icps_pgd               PORTB,7 ;28




KPL wrote:
>>  And that is done automaticly by MPLINK when using
>>  reloc mode. Nothing top change in the source code.
>>
>>  Jan-Erik.
>>  --
>>     
>
> ok, thanks, will try in the evening.
>
> What about the other question? I tried yesterday, looks like #DEFINE
> is limited to the file where it is given. How to define some pin names
> (or other substitutes) in main file, which will be used in some
> subroutines in separate section? I would not like to #define those
> things in every file separately. How do people do this?
>
>   
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