look at this it will kill you problem 
----- Original Message ----- 
From: "Samuel Ace Winchenbach" <swinchen@EECE.MAINE.EDU>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, May 16, 2000 7:22 PM
Subject: Learningssembly


> Hello All.
> 
> I have noticed that not many people are using PIC C.. so I have decided to
> teach myself assembly.  I have a number of very quick, small questions.
> Here is the code I have come up with so far:
> ;============================================
>         list    p=16f84
> TMR0    EQU     0x01
> OREG    EQU     0x81 ->0x01 ; are in bank_1
> PORTA   EQU     0x05
> TRISA   EQU     0x85 ->0x05 ;are in bank_1
> STATUS  EQU     0x03
> RP0     EQU     5
> W       EQU     0
> 
>         ORG     0x000
> BEGIN:
>         BSF     STATUS, RP0             ;Bank 1
>         MOVLW   b'11011000'
>         MOVWF   OREG                    ;Setup Option Register
>       MOVLW     b'0000'  ->00000
>       MOVWF     TRISA                   ;Make PORTA outputs
> 
> 
> LOOP:                           ;Do loop stuff in here.
> 
>         GOTO    LOOP
>         END
> ;============================================
> When I compile this using MPLAB I get the following warnings:
> 
> Message[302] C:\WINDOWS\DESKTOP\LED.ASM 14 : Register in operand not in bank
> 0.  Ensure that bank bits are correct.
> Message[302] C:\WINDOWS\DESKTOP\LED.ASM 16 : Register in operand not in bank
> 0.  Ensure that bank bits are correct.
> 
> My code sets the option register to bank 1...  so why would I get these
> warnings?
> also.. how do you deal with registers that are in both banks? (STATUS,
> INTCON, PCLATH,FSR)  I just equated the STATUS register to the lowest HEX
> value (0x03)
> 
> and my final small question is this... which way is better to set a
> variable, load a literal into W and then store it in "f" like I did in my
> code, or like the following:
>         MOVF    b'11011000',OREG
> 
> Thanks for any and all help, sorry to be a pest.
>