MB com port pinout.
Posted on 1998-12-01
I am trying to get the com port on a motherboard to work. Everything else on the MB seems to work OK (got it used), and it is set up correctly in CMOS.
I am currently using one of those motherboard (10-pin) to 9-pin connector adapters that you plug into the MB and then stick in an extra expansion slot hole. However, the one I am using doesn't seem to work correctly. Yes, pin 1 and the red stripe are lined up correctly, etc., etc.
Here is the MB information:
Has the Intel 437FX-66 PCI chipset in it. More specifically, it is SB82437FX-66.
Other Intel PCI chip is SB82371FB.
Has award 586 pnp bios.
I suspect the MB is Asus, but have no way of telling. (Don't see ASUS anywhere on the MB, but the guy I got it from only buys ASUS).
So, what I am looking for now is the pinout so that I can make my own connector. i.e. I'm looking for something like the following:
MB <----> 9-pin
1 <----> 1
2 <----> 3
3 <----> 2