Can anyone tell me why this does not work, I have a 508 configured for
int RC osc and int Reset with NO WDT.

temp            equ     0x1c    ;File reg for temp storage

        ORG     0               ;set start of program to 000 hex
        movwf   OSCCAL

start
        clrf    GPIO
        movlw   B'000000'       ;set all bits output
        tris    GPIO
        clrf    temp
start2
        incf    temp
        movf    temp,w
        movwf   GPIO
        goto    start2          ;go and do it all again

        END

This gives the expected square wave output on GP0, GP1, GP4, GP5 but
there is no outputs on GP2 and GP3. I have come to this simple loop
because the main program that I have working in a 508 with XT osc stops
working when I try and use the int RC osc.

Ken.


+-----------------------------+--------------------------------------------+
|      Ken Hewitt  G8PWC      |        Email ken@welwyn.demon.co.uk        |
|      /\/\/\/\/\/\/\/\/      |  Homepage   http://www.welwyn.demon.co.uk  |
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