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Motherboard with FIXED 2.5x multiplier can I clip BF0 for 3x

Posted: Sun Apr 06, 2003 7:40 pm
by rmay635703
Hi I have a laptop motherboard that has a fixed 2.5x multiplier, I have gotten a socket 7 pin diagram once more and plan on hard wiring it to 3x.

I have a pentium 200mmx chip that has two "working" multipliers 2.5x and 3x

Anyway, is it possible to take 2.5x
BF0 - 0
BF1 - 0

and set it to 3x
BF0 - 1
BF1 - 0

by clipping the BF0 pin off this CPU?
Or do I have to run a wire to ground, I can't remember

Cheers
Ryan

Posted: Mon Apr 07, 2003 12:18 am
by KachiWachi
Hey Ryan -

If I remember right, we went around about this for an M520 over at the PCChips Lottery...I think you need to pull it high if I remember correctly... Go try a search over there for what we did.

Good Luck!!

Posted: Mon Apr 07, 2003 2:00 am
by rmay635703
thanx, I will have to take a look, but...

That will involve clipping the pin enough so it doesn't contact the socket, then putting a wire to +3.3 I'm uncertain if I can do that.

The traces going to the socket are difficult to trace :) and I haven't figured out what goes where yet, so modifying the inputs will be sketchy at best.

Cheers

Posted: Mon Apr 07, 2003 8:10 pm
by Rainbow
Search for resistors around which are connected to that pin in the socket. I guess that the mulitplier is hardwired using these resistors somewhere.