Here some timers:-
enter the routiene with a number 1-255 and the timer will multiply by factors
shown (assuming 4.00mhz clk and prescaler set to maximum)


Cheers Steve.....

;--------------------------------LONG TIME TIMER----------------------------
LONG
        CLRF    TMR0    ; CLEAR TO START
        MOVWF   GP1     ; TEMP COUNT REG
LONG2   BTFSC   TMR0,7  ; 256 * 128 US = 32 MS
        GOTO    JMP1
        GOTO    LONG2   ;LOOP UNTIL BIT SET
JMP1    CLRF    TMR0    ; YES SO CLR RTCC
        DECFSZ  GP1,1   ; DECREASE TIL ZERO
        GOTO    LONG2   ; ROUND THE LOOP
        RETLW   0       ; RETURN FROM SUB

;----------------SHORT TIMER (1US*2+3) PER CLK
SHORT
        MOVWF   GP1     ; TEMP COUNT REG
SHORT1  DECFSZ  GP1,1   ; DEC COUNT
        GOTO    SHORT1  ; DO TIL FINISHED
        RETLW   0       ; RETURN FROM SUB