Assuming the code does what I think it does, I'd look at what is
connected to portB.1.  It could be you are causing brownouts/shorts by
pulsing that pin, or creating too much noise.

I'd isolate that insturction and see if it does it by itself.  Chances
are the program is ok, but not the hardware.

-Adam

Sid Weaver wrote:

>OK, experts.  I need held. B_A_A_A_D
>
>Here is my code for driving a 595 shift register, at the present time uss an
>F877 in Flash Lab.
>
>
>serout2 so, 84, ["Starting", 10, 13]
>low PortB.1
>serout2 so, 84, ["Low latch", 10, 13]
>shiftout PortB.2, PortB.0, msbfirst, [%10101010]
>serout2 so, 84, ["Shiftout", 10, 13]
>pulsout PortB.1, 100
>serout2 so, 84, ["Pulsout", 10, 13]
>low PortB.1
>serout2 so, 84, ["Receiving Plan", 10, 13]
>
>The debug screen displays
>
>Starting
>Low latch
>Shiftout
>
>but never gets to the "Pulsout",  It just goes back to Starting.  It's like
>it doesn't like "pulsout PortB.1, 100" and just ignores it and restarts.
>
>Why ?
>
>Sid
>
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