CompuServe test bed

CompuServe Messages

#PARALLEL PORT

#: 12529 S1/Hardware – Forum unknown
    23-Mar-86 17:48:19
Sb: #PARALLEL PORT
Fm: Jay M. Duff 73137,2021
To: all

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MY PARALLEL PORT RECENTLY CEASED TO FUNCTION DUE TO A STUPID ERROR ON MY PART. I NARROWED THE PROBLEM TO THE (2) 8520'S. FROM THAT POINT, I SWITCHED THE TWO 8520'S (REFERRED TO AS LEFT AND RIGHT WHILE YOU LOOK AT THE BOARD FROM IN FRONT OF THE COMPUTER). AFTER SWITCHING THE TWO CHIPS, THE DISK DRIVE QUIT WORKING, THUS I'M CONVINCED THAT ONE OF THE TWO 8520'S IS BAD. NOW COMES THE BIG QUESTION, WHICH 8520 IS BAD, THE LEFT ONE OR THE RIGHT ONE (RIGHT ONE BEING CLOSEST TO THE CPU)?
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