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proteus and pic16f877 ra4 pin(open drain)

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seyyah

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proteus pic16f877

I'm trying to simulate a stepper motor drive in ISIS. But one of the phases is connected to the ra4 pin. I made ra4 pin digital out and pulled up by a resistor. I'm energizing the phases of the motor sequentially. Stepper motor is connected to the pic by uln2003. The other phases works correctly but the phase which is connected to the ra4 pin isn't. It stays always energized. How can i solve this problem?
 

pic pin ra4

Hi

Check out your pm the corrected design file is in your in box for future listen always used pull-ups and pull-downs digital types resistor.

What I do for this purpose used pull-ups and pull-downs resistor from DSIMMDLS OR generic resistor from device lib and then used as digital Resistor if you fail to open DSN file then import section file to see what I did.
 

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