Hi Ravi,

Try putting nops in like this:
 
    bsf portc,scl
    nop
    bsf portc,sda
    goto $+1
    bcf portc,scl
    nop
    bcf portc,sda
    goto $-5

If it works then it is probably a read-write-modify issue, which occurs
when a pin hasn't changed enough before the next bcf or bsf happens.

Cheerful regards,

Bob

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