On Fri, 31 Mar 2000 20:27:12 +0200 Saurabh Sinha <ssinha@IEEE.ORG>
writes:
> Hi,
>
> Firstly, I would like to thank all those that have helped me with my
> FIR
> filter program. Its now working 99% or maybe its 100%, but I am
> having one
> problem, I am using MPLAB to simulate the program. I am using
> <Window,
> Modify> to assign a value for PORTB, which is supposed to be the
> simulated
> version of the ADC.
>
> However, the program keeps using this as zero. If I force a value
> into uk,
> then try and run the program, then I have success, I suspect the
> problem
> lies with initialization [or possibly in the main program], I would
> appreciate it if somebody could have a look...
>

        I'm doing something similar in simulation, poking a value into port b.
Of course, writing to port B puts the value in the output register, while
reading port B reads the pins (from who knows where in simulation). I did
a "run to here" to run the program to after port initialization, the
wrote 0x00 to trisb (making the pins output). Then, the value written to
port B will be read by the remainder of the software.

Harold



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