Re: Debug an 8086 that won't power up
Posted on 2022-09-21, 07:15
Measured the OUT1 pin (pin 13) on the 8253 and I don't see any activity (it goes high as soon as I power on the computer but never changes) I also measured the CS pin (pin 6) on the 8255 and it appears to be a regular interval but I don't know what kind of signal I should be expecting.