I am learning and experimenting with a 12F629 doing a simple
loop:

blink
         bsf     GPIO, 0
         call    delay
         ; X
         bcf     GPIO, 0
         call    delay
         goto    blink

The delay is about 250 mS, code from /techref/piclist/codegen/delay.htm
It works as expected. But if I add a second "call delay" at "X" I
expect to get double length pulses with single length space in between.
What I get, though, is

on single length space, one double length pulse one single length space
TWO double length pulses with a dip of about 20mS in the middle, and so
on.
   __   __ __   __   __ __
_|  |_|  |  |_|  |_|  |  |_

I do not understand this, could somebody please explain?
The complete code is at http://www.hierbabuena.info/blink.asm

Goran


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