4. Onboard sound chips

Yamaha OPL YMF701B-S & Yamaha OPL YMF704-S chips with GM support, perfect for DOS games!!! All other things I need is just a nice SB16 or AWE32/64 for its digital sound with a high level of SNR.

5. Onboard video chips

S3 Virge/DX with 2MB memory(?) I think, also perfect for DOS games, isn’t it? Intel E28F002 Flash(???), unknown NS9702AK chip(???).

6. Back panel I/O ports

Standard layout with PS/2 x2, USB 1.1 x2, parallel port, serial port, VGA(D-Sub), game/midi port, 3.5mm audio jacks x3.

7. CPU configuration

Current CPU, a Pentium 66X1.5=100Mhz, I don’t know its voltage... I want to replace it with a Pentium MMX 66x2=133Mhz, but I don’t know whether MMX is supported or not, because no manual available for this motherboard. I believe MMX is probably okay since it’s an intel 82439HX +82371SB chips combination but still not quite sure about it... Another big problem is that there is no onboard jumper for the voltage control at all. Pentium 100Mhz normally works with 3.4~3.5v (googled) but my MMX 133 is marked with 2.45v. And I don’t know the voltage could be controlled via BIOS or not...

Hope for finding some help or useful information for the manual or drivers form ur experienced guys here! And u guys will be highly appreciated! 😀 😀

Actually that board is by Intel and it was often sold to oems as well normal retail so finding at that you need is super easy plus with that board you can do a three in one system with great ease plus with the onboard dos compatible audio you won't need a second mortgage for choice ISA soundcards at least not right away. The voltage, clocks, and multipliers are set with the jumpers.

nforce4max wrote:

Actually that board is by Intel and it was often sold to oems as well normal retail so finding at that you need is super easy plus with that board you can do a three in one system with great ease plus with the onboard dos compatible audio you won't need a second mortgage for choice ISA soundcards at least not right away. The voltage, clocks, and multipliers are set with the jumpers.

Thx for the reply. I've never seen such qualitied board before.

The biggest problem is there seems no voltage jumper integrated onboard at all. I've checked it again and again, only jumpers for clocks and multipliers available..... 🤣 🤣 🤣

And I have no idea about those two Yamaha OPL chips because I focus too much on SB16/SB compatible cards, so where should I find the suitable drivers for that? What about its GM or MPU-401 compatibility?

If I got all of these problem solved, I'm damn sure that I will build up my 3-in-1 DOS rig ASAP with a Pentium MMX 133mhz CPU

Looks like an Intel TC430HX or one of its OEM variants. This manual should be adequate in any case:

ftp://ftp.jameco.com/Archive/Current-TechDocu … ents/155150.pdf

TheMobRules wrote:

Looks like an Intel TC430HX or one of its OEM variants. This manual should be adequate in any case:

ftp://ftp.jameco.com/Archive/Current-TechDocu … ents/155150.pdf

Thank u so much!! I think it is the manual for my board! Because the layout mentioned in the manual is almost the same as my board's!!!

So many thanks for u, budy!!!

I have this same motherboard, and I need to update my BIOS. Does anyone have a BIOS for this board?

What exact bios version do you have right now? 1.00.xx.DH0x?

These are not polymer capacitors, just regular electolytics - in a different form factor for surface mount.

Still a very nice board, of course!

DOSdevSean wrote on 2021-04-10, 22:12:

I have this same motherboard, and I need to update my BIOS. Does anyone have a BIOS for this board?

Why do you need to update it?

Don't expect miracles from a BIOS update, at best it will sort out the 8GB HDD limit, and non-Intel CPU support on an Intel OEM board isn't going to happen.

In general you only reason to update is if something specifically mentioned in the BIOS release notes is desired, and if you have those you have the BIOS itself too most likely.

The reason I am asking is because I will always be on the hunt for more OEM identifiers in Intel bioses.
https://www.elhvb.com/mboards/intel/index.html

majestyk wrote on 2021-04-11, 06:21:

These are not polymer capacitors, just regular electolytics - in a different form factor for surface mount.

Still a very nice board, of course!

Polymers usually have colored polarity marks - e.g. pink, blue, red etc., at least in what I have already seen, and that should be valid for most older hardware. But modern 'gaming' PCs sometimes have polymers with black markings, probably because of "estethics" 😁

That's a very nice board. My system has the Triton II chipset as well. Your board has the ribbon connectors in a great place. My Supermicro board has them between two of the PCI slots which is fairly terrible 😒.