Self-bump/Update with information in case anyone else happens to use this motherboard. After messing with it for about a month I can confirm that the grouping of pins in the original post is the right one. Also the manual is a bit misleading about the L1 cache. If you have any CPU that supports …

I've recently acquired a TD-4IP-UMC-AIO motherboard and I'm trying to determine the layout of the settings pin since all the CPU jumper pins are pretty much bunched up all together and the markings on the motherboard aren't as intuitive as one would have hoped. Motherboard https://i.imgur.com/ …

So after messing around with the computer all day (mostly cable management, I hate ribbon cables...) here's what I found out. Plugging 3AA batteries into the external battery header (4.5V, multimeter read 4.92V) the RTC now ticks on even when the computer is turned off so I'm going to take a guess …

Since the SiS 497 has an integrated real time clock, the motherboard is probably using that instead of a separate chip. So you may want to check the 496/497 datasheet (there's info about the RTC in page 73): SiS 496-497.pdf Try to follow the traces to see how it connects to the battery. If the …

I'll have a look at it over the weekend though I'm not exactly sure where to look for the RTC chip. Most of the markings are very washed out on the chips so I can only really identify the chipset, I/O and memory chips, most other chips appear to be various logic gates (I can read SN7406N just barely …

I've built myself a nice 486 computer and got it more or less working however the motherboard has two non-fatal but annoying issues. Whenever the computer is off the BIOS clock will just stop until the next time the computer is powered on. It will keep the time (and all the BIOS settings) but will …

If the worst that can happen is no POSTing and angry beeps I'll try experimenting with JP17 once I get the rest of the parts. I've also edited the original post with an extra page from the manual I missed just in case anyone would find it useful.

Hello, my first time posting here. I'm building a 486 based computer and I'm still waiting on some parts to arrive before it will become operational however I went ahead to set up all the jumper settings on the motherboard (SIS 496/7G Rev.102, manual available here ). I got most of everything down, …