That's just plain AWESOME!!! Congrats!

But AGP frequency would be 88,7 MHz, right?

Yes, but the pci clock stays at 33.3MHz.
Currently, i'm running the system at 1050MHz (140 * 7.5) which gives me 92.4MHz AGP clock - no issues.
For the AGP i'm using a newer cheap GF FX which drives windows and may come handy for newer DX games.

And here is my Rev 1.03 board stuck at ‎Katmai's
Wanna swap 😉

chinny22 wrote:

And here is my Rev 1.03 board stuck at ‎Katmai's

dont know about P2B-D, but with plain P2B I found all the revisions info not apply if you force things (slotkets, jumpers)

Very nice mod LeFlash. My P2B-D 1.06 with the 9150AF-08 PLL can run 133MHz FSB, but only by changing it by software and I also have to select a different PLL to get there. I actually tried a mod similar to the one you did, but it didn't work as I only had the 9150 PLL.

Ran two 800MHz Coppermines for years at 133MHz FSB on my board rock solid.

Kamerat wrote:

Very nice mod LeFlash. My P2B-D 1.06 with the 9150AF-08 PLL can run 133MHz FSB, but only by changing it by software and I also have to select a different PLL to get there. I actually tried a mod similar to the one you did, but it didn't work as I only had the 9150 PLL.

You can get the 9250-08 cheap on eBay from china. I ordered 5pcs for around $20 because i like to have some spare for possible future projects.
It's a simply drop-in for the 9150-08.

The only important thing is the "-08" because it implies pinout and features. There are other 9x50 outthere with -13 and other numbers, they are completely different and will not work.

Replacing them is a matter of 5-10 minutes with some heat, flux and a steady hand.

Very nice job, LaFlash.
I always found the P2B-D one of the most iconic boards of the PII/PIII generation and last year I finally got one. My revision is 1.06. It combines the 9250-08 chip with the missing FS3 jumper and runs fsb 133 fine but at that speed the RAM is not happy - only runs ok with 3 sticks. Tipperlinne describes a fix but that is beyond my ability.

You're talking about the VTT/Vio-Mod?
Seems relatively simple, especially if you use smd 0603 resistors.

Yes, the R50 replacemenrt job. Simple for many, but not for me - I have 'two left hands' when it comes down to soldering. But I am happy with it as it is.

you can simply use a big solderblob and iron to heat up both pads of the smd resistor at once and simply swipe the resistor away.
the rest is quite simple. tweezers and a steady hand.

I'm not that confident in my skills. Plus, even if I could fix this, there is still the issue that with this 3-jumper configuration the PCI clock is running at 133/3 and I'm not comfortable with that. Adding that 4th jumper is a bridge too far for me too. Maybe I find a set of 1Ghz fsb 100 SECCS one fine day 😉.

The initial post suggest that the clock generators were swapped, but ics9150 is pin incompatible with 9250.
Or do I read it wrong ?

It is pincompatible, but has an additional pin for the settings. You have to feed it to a jumper to gain access to the settings.

I should try to mail you my p2b-ds 1.04 to mod for me xD great job looks great.

Sure, you can.
I should start a retro-upgrade-business 😉

Awesome!

pshipkov wrote on 2020-09-19, 19:05:

The initial post suggest that the clock generators were swapped, but ics9150 is pin incompatible with 9250.
Or do I read it wrong ?

They need to be the -08 version both, there is a crapload of variants of the ICS9150/9250.

Just ordered 3 pcs 9250 to rework my rev. 1.05; and a couple in reserve 😁