Heres a tricky one

Heres the deal:

A friend gave me a Pentium 4 1.8GHZ 478 pin chip today. The reason he gave it to me is cause he accidentally made it a 477 pin processor. Apparently he sit it in a lil off and a pin fell out. Theres no break marks, just the hole. Well its the ONLY thing wrong, no other bends or anything.

So i was wondering where i can get a breakdown showing the pin #'s and a general idea of the use. I know some zones of the chip are only for connection, no actual use, so i think if i can make contact i may be able to salvage it.

Any ideas?

You could try to solder the pin back onto the processor. Although they're so small you'd probably end up melting three or four.
If you have a motherboard you no longer want to use, you could try using it on that one, just in case you fry it or something.
However, if it usually has 478 pins it's probably for a good reason.:rolleyes:
EDIT:
Have you tried at www.intel.com to see if they have graphs for that?
On the Athlons, the pin marked with an arrow on the other side is the hardware interupt (i think), not sure about the P4s.

I dont have the other pin, sadly, he lost it when it came out. I'll check intel. I was told to buy some gold plated audio cables and sgave some of the gold off into the whole and fill it with sotter. What type of sotter should i use?

Silver solder, but you're going to need some pretty expensive soldering equipment. You'll obviously need the iron - get one where you can control the temperature and have a fine tip. You'll also need a heatsink thing, and probably a solder vacuum.

Theres a problem with all this i failed to realize. I was going to use my P4 board to test it but i forgot i sold it....I'll download the datasheet but i think im going to list it for sale on ebay "as-is"..

I got the Datasheet. It names every pin and its duty, but gives the pin name/number and no image to associate the pin name or number to an actual pin. So any one of those could be this pin, i have no way to tell.