That board doesn't have onboard floppy or IDE controllers so why would it have jumpers for them?
If you don't have an add-in card with those controllers it isn't finding any because there aren't any there.
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Seems pretty complete to me.😀 What jumper settings are you missing?

Wrong forum. This belongs in Marvin.

Moved.

moturimi1 wrote:

Unfortunately I am not able to find the complete jumper setting of this board. It posts but doesn't boot (find the IDE and Flopp […]
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Unfortunately I am not able to find the complete jumper setting of this board.
It posts but doesn't boot (find the IDE and Floppy Controller).
A wrong jumper setting might be the reason.

Can anyone help me?
This page does not show all setting unfortunately: http://motherboards.mbarron.net/models/486pci/tk8880.htm

I couldn't find it in th99. Most modern Chicony 486 board listed in th99 has only VLB slots and yours is probably more recent (doesn't have to be more recent) as it also had PCI slots but at any rate th99 doesn't seem to list any Chicony boards with any PCI slots.
It's possible however the board is listed under another model name by another manufacturer but one would have to visually go through all the pics to see if there's any similar looking ones. Problem with this is that such "twin" boards may have differences like alternate jumper settings.

I'll go see if I can find any twins on th99.

Here's a site with a clear pic though http://www.amoretro.de/2011/04/chicony-tk8880 … otherboard.html and google seems to have more hits with your mainboard model number.

Thanks a lot for all the replys.

To make it clear: I know that the board has no IDE and Floppy ports.
But when I plug in a ISA Controller the system does not boot. This often happens when there is an iussue with the jumper settings!

The pictures on motherboards.mbarron.net do not show all jumper settings. And unfortunately the identification of the jumpers are not easy.
There also seems to be a jumper setting for the different voltage settings, that are not available.
No one wants to fry the CPU, right?

Anyhow, hopefully one still has the full documentation of the board.

You should be looking for jumpers and settings on the controller card then.
May also have to fiddle with IRQ/DMA in the BIOS. (Been too long for me. Someone else should advise.)
http://www.pcguide.com/ref/mbsys/bios/set/pciSettings-c.html
http://ccm.net/contents/394-hardware-interrup … q-and-conflicts
If the controller card is PnP-only you may be in for a hassle.

The jumper settings shown on the back side of the board in the biggest table are for CPU setup and include the voltage settings for whatever CPU.
The FSB (Clock Multiplier) is the smaller table at the bottom.
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Exactly what jumpers are you worried about.
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PCBONEZ wrote:

The jumper settings shown on the back side of the board in the biggest table are for CPU setup and include the voltage settings for whatever CPU.
The FSB (Clock Multiplier) is the smaller table at the bottom.
Exactly what jumpers are you worried about.

No the voltage Jumpers are not shown (JP36-JP40)
I would also like to know what JX1 is.

moturimi1 wrote:

PCBONEZ wrote:

The jumper settings shown on the back side of the board in the biggest table are for CPU setup and include the voltage settings for whatever CPU.
The FSB (Clock Multiplier) is the smaller table at the bottom.
Exactly what jumpers are you worried about.

No the voltage Jumpers are not shown (JP36-JP40)
I would also like to know what JX1 is.

I already told you were your voltage jumpers are. They are all there.
If you don't want to believe me (or the others that told you) then get out your multimeter and trace the circuits.
It's not that hard on boards that old.
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I would like to know if I'm wrong.
Evidently JP36-JP40 and JX1 are undocumented (on a board that is unusually well marked with settings) so I suspect they are "reserved" or "factory use only" type jumpers.
Also, evidently, you are the only one with this board at this time so you are the only one that can figure it out.
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I made a pdf file of the relevant sections of the PT2066 mainboard manual. Someone should add it to the database.

@ PCBONEZ Please stop giving advices related to hardware you are not familiar with !

BastlerMike wrote:

@ PCBONEZ Please stop giving advices related to hardware you are not familiar with !

@BastlerMike,
Unlike some people I know enough about hardware to figure out jumper settings without having a manual. My background is electronics.

This thread was here a week before you showed up and there was no hint ANYONE with a manual would EVER show up.
In the vacuum you created by being slow I chose to try and help the guy anyway.
I was trying to help. You weren't even here.
You have no room to be making pompous ass statements like you just did.

To help him would require effort on his part to be our hands and eyes and apparently he's not even willing to go that far.
Didn't even post photos of the problem board.
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Shame on me for being slow, kudos to you for being a wise man. Being an electronics expert doesn't mean that all your interpretations and suggestions are true and helpful for any particular problem.

You say: "The jumper settings shown on the back side of the board in the biggest table are for CPU setup and include the voltage settings for whatever CPU."

Why are you doing that? This table says nothing about voltage settings. You don't exactly know, but you are presenting your assumptions as facts. This is not helpful !

BastlerMike wrote:

Shame on me for being slow, kudos to you for being a wise man. Being an electronics expert doesn't mean that all your interpretations and suggestions are true and helpful for any particular problem.

You say: "The jumper settings shown on the back side of the board in the biggest table are for CPU setup and include the voltage settings for whatever CPU."

Why are you doing that? This table says nothing about voltage settings. You don't exactly know, but you are presenting your assumptions as facts. This is not helpful !

I also said "I would like to know if I'm wrong." and "I suspect they are...."
So your evaluation is bullshit.
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BastlerMike wrote:

I made a pdf file of the relevant sections of the PT2066 mainboard manual. Someone should add it to the database.

Thank you so much. You helped me and solved all my questions.

PCBONEZ wrote:

Unlike some people I know enough about hardware to figure out jumper settings without having a manual. My background is electronics

I have more than a lot of experience nowadays with old computer hardware to analyze major hardware issues on my own.

Anyhow I was correct that JP36-JP40 and JX1 have something to do with the voltage settings.
And the jumper settings on the "back of the board" do not show all settings; e.g. Intel DX4 and AMD DX4 and 5x86 are missing.

I think it would be best to use expressions like "I guess" when one is not 100% sure...
Of cause this misunderstanding could be related to the fact that I am not a native English speaker and that I was not able to formulate a precise question or request.

Anyhow, I think it does not make sense to argue here on the forum.
In the end my problem was solved due to the memebers of VOGONS. So thanks to everyone who was willing to help me

I went from Electronics to Nuclear Engineering then to QA Inspector. Computer work is to keep busy after I retired.
I've been doing component level motherboard repair for over a decade.
I'm happy to help people not that advanced in that area but I'm not going to take lip from them.
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You can find voltage settings easily with a multimeter and looking up the chips the pins go to on the web.
The circuits are not hard.
If you don't have a multimeter I would get one. A basic (cheap) one is fine for circuit tracing.

Your original problem was booting IDE/Floppy. - Did you work that out?
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PCBONEZ wrote:

Your original problem was booting IDE/Floppy. - Did you work that out?
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Yes, it works now with the right settings. I had the problem with a different board before.

Congrats!