Hi,

i had a BIOS Collection from some one here with all BIOS Files for all Revisions of UM8810 PAIO.
maybe some one has this zip file too ?
unfortunaly i cant find it..

Thanks

Matthias

I have an AWARD and a Phoenix BIOS for this board, but I wouldn't really call it a collection of various BIOS revisions. Have a look.

Bancho wrote:

How do i go about flashing the bios on this? If it possible to flash it using software or is it a chip out into a programmer job […]
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How do i go about flashing the bios on this? If it possible to flash it using software or is it a chip out into a programmer jobbie?

The BIOS chip looks like it has a ceramic package, which is usually pointing to an EPROM, so no Flash chip. You would need to program this in an external programmer.

You might also need to take a look at the DALLAS chip. Its battery is most surely dead by now.

realoldguy23 wrote:

The BIOS chip looks like it has a ceramic package, which is usually pointing to an EPROM, so no Flash chip. You would need to program this in an external programmer.

You might also need to take a look at the DALLAS chip. Its battery is most surely dead by now.

Thanks, i had a feeling it would require a programmer. Is it possible to pick up a programmer for a cheap price? Is there a specific one i would need to get? Is it possible to switch out an EPROM for an EEPROM?

I've replaced the DALLAS as it was in a socket.

Bancho wrote:

Thanks, i had a feeling it would require a programmer. Is it possible to pick up a programmer for a cheap price? Is there a specific one i would need to get? Is it possible to switch out an EPROM for an EEPROM?

Yes, it is possible if they are compatible and you program them outside of the board. But you surely need to check for pin compatibility. If you intent to do the programming on the board, then you need the exact flash/eeprom chip that the board manufacturer has planned for.

Regarding the programmer, google for TL866 and read recent forums posts to find out which model to buy. I don't have it myself. I bought a Batronix programmer, that is quite expensive (130€) for what it can do, but it is very reliable and the software is good. I didn't do much research before buying. I guess I would invest in something else, if I would buy one again.

matze79 wrote on 2018-10-07, 10:07:

Hi, […]
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Hi,

i had a BIOS Collection from some one here with all BIOS Files for all Revisions of UM8810 PAIO.
maybe some one has this zip file too ?
unfortunaly i cant find it..

Thanks

Matthias

I will do a dig in the offline archives. No guarantee though.

Hi All,

Recently I bought ECS UM8810 PAIO rev.2.1 (Phoenix BIOS 4.04) with VRM module VR102 and Am486 DX4-100NV8T. It halted on boot with CMOS Battery error, so I bought from ebay Dallas replacement here https://www.ebay.com/itm/224631306391

Now system starts, and I soldered PS/2 pins and mouse works fine. But I got error Failure Fixed Disk 1 on POST screen when use HDD (500mb) or CF card (512Mb). DOS starts normally when I press F1 key. How can I fix this? Is there a way to use Am5x86 P75 133ADW?

1. What program should I use to flash the phoenix BIOS?
2. My UM8810PAIO r2.1 doesn't detect the cache memory. What should I do? 🙁
3. Is it possible to find the schematic of its VRM to build one? 😕

I built the VR-102 module myself, additionally with the fan connector.

Here's the circuit diagram. I used the original voltage regulator. Fine tuning can be done with the trimmer.

Nice work. Are there gerber's hosted somewhere?

I've never seen a clip pressing down on the voltage regulator IC like this. How is the clip attached to the PCB and where did you source it? I assume you are using it to press the PQ30RV21 onto the heatsink for cooling purposes? I think you could also use thermal tape. In my experience, the PQ30RV21 never gets warm during use. All motherboard's I have seen do not attach a heatsink to the PQ30RV21 on account of how cool it runs, nor did manufacturers bother to tie the VRM's tab to a ground or Vcc plane.

What is the goal of the trim pot if fixed resistors are used to adjust the output voltage?

I don't see C1 and C2 on in the PCB photo. Are they on the bottom?

Is there anything special about the ECS Elite UM8810PAIO? I don't think I have tested one of these boards.

The clip is attached to the circuit board (golden rectangle) with a thermal pad (self-adhesive).
I bought the clip on eBay from a Chinese dealer.

The CPU cooler is positioned so that the airflow cools the VRM.
Here you can see the difference:

The original VR-102 protruded over the mainboard, mine is inside.
With the trimmer it's possible to adjust the voltage at the CPU socket (low range).
C1 & C2 are on the bottom. If you are interested I can provide the gerber files.

For me this hardware runs perfectly on the mainboard:

- SoundBlaster AWE32
- Adaptec AHA-1542CF with BlueSCSI V2
- Longshine LCS-6625 (4xFDD / 2xHDD)
- 3COM 3C905C-TXM
- Elsa Winner 2000AVI/3D

That's a nice looking PCB. If one of these MB's ever lands in my lap, I'll probably assemble the PCB.