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???
09/17/14 05:07
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#190352 - Done checking already
Responding to: ???'s previous message
1. I have probed EA pin on CRo, its +5V constantly

2. Made a program to toggle port that's it.
void main
{
while(1)
{
P1 = ~P1;
}
}



3. Program made in keil,
Option checked in keil options: for using on chip rom only.



4. One thing I don't understand on PSEn pin I saw same frequency as on ALE pin.
I had checked for shrting, any coupling nearby but found none

List of 7 messages in thread
TopicAuthorDate
PSEN outputting freq/code does not run            01/01/70 00:00      
   check EA and Pgm            01/01/70 00:00      
      Done checking already            01/01/70 00:00      
   dollars to doughnots I bet            01/01/70 00:00      
      any other reason/remedy            01/01/70 00:00      
         Reset circuit            01/01/70 00:00      
         Have you read the datasheet?            01/01/70 00:00      

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