Hi
I am new to PICs so please excuse any blatant ignorance....  I am trying a simple application for a 12C671 using MPLAB 3.40.  Trouble is I cannot seem to get the I/O's to toggle under the simulator (no change in the gpio SFR) by 

#define         DOUT    GPIO,2  ; SPI port DOUT signal
...
                bsf     STATUS,RP0        ; set file register bank to 1 
                movwf   OSCCAL            ; update register with factory cal val
ue 
movlw   b'11001000'        ;Internal clk,prescaler to wdt
             movwf   OPTION_REG   ;
             movlw   b'00001001'        ;
             movwf   TRISIO               ; port 0, 3 are inputs, rest outputs

                bcf     STATUS,RP0        ; set file register bank to 0
                bsf     DOUT;
              bcf     DOUT;
...

Could somebody please point out my error to me?

Cheers.

Stefan Rousseau
stefanr@rrs.co.za
Technopark
Stellenbosch
South Africa