So I have countless vintage motherboards, many of which lack documentation. You know what I do when I can't tell what a jumper does? I get the DMM, the flashlight, and the microscope. Pre-Pentium systems are really easy to troubleshoot and reverse engineer because they're so simple. I just think the author lacks confidence, tools, resources, or curiosity.
PS: I'm working on a "braindead" 25 MHz 286 with an 287XLT custom motherboard where the chipset is implemented largely by a single FPGA.
PS: I'm working on a "braindead" 25 MHz 286 with an 287XLT custom motherboard where the chipset is implemented largely by a single FPGA.