UMC UM8881F datasheet needed

[nicolae788]

Hello,

I would highly appreciate if someone has in reach a datasheet for this IC. It's about the UMC UM8881F

Thank you very much.

Alex.

[stj]

Re: UMC UM8881F datasheet needed

it's paired with the UM8886 to create the chipset for a 486 motherboard.
why do you need it?

[nicolae788]

Re: UMC UM8881F datasheet needed

Hi, thanks for the reply,. Yes indeed that's the case. I am rebuilding this 486 motherboard and i have a broken pin on this IC and i want to know what's used for, maybe i can get away with it.

Thank you very much for your kindness.

[stj]

Re: UMC UM8881F datasheet needed

you would have more luck searching for a 486 motherboard schematic i suspect.
if you feel the need, you could grind the package down and solder a link to the stub.

this used to be done a lot on wii console dvd drives.

[nicolae788]

Re: UMC UM8881F datasheet needed

yes a schematic would do fine also. But can you instruct me to a place were they have desktop boards schematics? The vast majority are keeping laptop MB schematics which it's fine, but on the desktop side i found the ice to be quite thin ...

I really appreciate your help. Thank you.

P.S. nice guide you shared thank you.

[stj]

Re: UMC UM8881F datasheet needed

maybe there are 486 based laptops?

[nicolae788]

Re: UMC UM8881F datasheet needed

Yes, i could search for a 486 laptop schematic that used this same chipset...thank you ! However finding 486 laptop MB schematics won't be so easy, i presume. But in the likely event that i will not find the schematic, grinding the IC looks feasible.