Yet another jumpers thread, just in case anyone has more info 😊 - this time for a Headland 286/16 motherboard. It came in a system I just got , it uses an Acer 5105 IC for it's I/O and FDD/HDD functions, has a working PS2 mouseport and a 4x ISA riser.

The BIOS string is: d286-1211-061390-kf , sadly I don't get anything out of it.

The I/O jumper block was easy to find, just searched for dedicated controllers and found this (last card of the page). It seems to work since I successfully disabled COM2 with the jumper settings.

I am manily interested at JP8 :

JP13 and JP14 seem to be clock-related:

and JP15 could be the 287 present/not_present jumper?

As always any help is appreciated, thanks! 😊