Re: Fixing a Keyboard controller error on a socket 7 motherboard
Posted on 2024-05-09, 10:47
Since you said that you've tested everything, then what did you exactly measure? 6542b.JPG The circut of the 6542b is not complecated. First, did you measure the VDD? What's the value? As long as you connect a keyboard, measure the two pull-up resistors on pin 37 and 38, and of course you'd better …