no idea really, before You buy - acid damage from left to right - that's a no go

I am not worried about acid damage , I'll just spend some time and fix it. I am more worried from lack of documentation 😀

Fast googling after spotting acer marked chip gave me dis:

http://minuszerodegrees.net/xt_clone_bios/xt_clone_bios.htm

Motherboard: labelled 'SUPER 10-B1'

Yes I have found the B1 bios site, what would be more interesting is the jumper block setting. I have also found some B1 pics online, main difference is a variable cap on the xtal1 position, B has a fixed one

Is it just me or is that board limited to 245kb of ram unless you solder more sockets on?

Tried search in TH99 archive without luck,so best i found is topic about bios,the good that it was bumped after seven years,last time in 2015 and there at least 2 owners of this mobo on the forum

http://www.phantom.sannata.ru/forum/index.php … um_view&o=&st=0

@kanecvr
the pictured mobo has full 640kb , maybe the extra sockets where used with lower capacity ram ICs

@rein_ein
thanks for that, checking it but I don't recognize any nicks from here - what am I missing? 😁

as per the Russian thread the mobo might be similar to this: http://www.uncreativelabs.de/th99/m/U-Z/33682.htm

my bad

edit:

*on their forum*

ah, no problem rein_ein - still I got some leads 😀
are they still searching for the BIOS? Or google translate is way off?

My guess is that the 8 DIP switches are the same as found on an IBM XT, and configure things like drives, video and memory.

keropi wrote:

as per the Russian thread the mobo might be similar to this: http://www.uncreativelabs.de/th99/m/U-Z/33682.htm

Your board seems to be a revised, more modern version of the one on the link. In fact it seems to accept 44256 RAM chips. Also on your board JP5 is on a different position, and headers are rearranged compared to the older version. For your board, JP3 is for Turbo Switch and LED, JP4 for Reset and JP5 for Power LED and Speaker.

DIP switches you can follow the info on that page. Should be pretty much the same.

I have the board pictured below, obviously a newer one than Yours based on the F revision.

^ do you have any documentation?

This is all I could find

http://stason.org/TULARC/pc/motherboards/U/UN … -MAINBOARD.html

Hi, is anyone still interested?
I own this motherboard and I am trying to bring this back in life. There is a manual too, I can share more pics, just pm me.
Thanx!

mtsiakiris wrote on 2023-01-08, 11:51:

Hi, is anyone still interested?
I own this motherboard and I am trying to bring this back in life. There is a manual too, I can share more pics, just pm me.
Thanx!

I think it would be best if you could scan the whole manual and upload it in The Retro Web project - a better stason.org/TH99 alternative
Thank you for your initiative! 😃👍
(Also sending you a pn as you requested.)

mtsiakiris wrote on 2023-01-08, 11:51:

Hi, is anyone still interested?
I own this motherboard and I am trying to bring this back in life. There is a manual too, I can share more pics, just pm me.
Thanx!

Does yours work at 4.77Mhz speed? I used to own a similar board but never found the setting to disable the 10Mhz turbo mode.

MMaximus wrote on 2023-01-09, 19:22:

Does yours work at 4.77Mhz speed? I used to own a similar board but never found the setting to disable the 10Mhz turbo mode.

Yes, it works on both modes, it has a special pin that is connected to push-on / push-off button in front of the case.
Wait till I upload the full manual and may be that lead you to something similar in yours.
But, depending the bios chip, management chip and oscillator crystals on your board, it might be impossible for you to run on 4.77.

Doornkaat wrote on 2023-01-08, 12:41:

I think it would be best if you could scan the whole manual and upload it in The Retro Web project - a better stason.org/TH99 al […]
Show full quote

mtsiakiris wrote on 2023-01-08, 11:51:

Hi, is anyone still interested?
I own this motherboard and I am trying to bring this back in life. There is a manual too, I can share more pics, just pm me.
Thanx!

I think it would be best if you could scan the whole manual and upload it in The Retro Web project - a better stason.org/TH99 alternative
Thank you for your initiative! 😃👍
(Also sending you a pn as you requested.)

Hi again, trying to upload the manual in PDF, but exceeds limit of 5MB. So, sharing a public url here: https://drive.google.com/file/d/1_vYxBMdSYJ5_ … ?usp=share_link