in Dos

use the software------Hwinfo  ver:4.8.8

A:http://bbs.yjfy.com/UploadFile/2007-4/2007428920288329.jpg
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B:http://bbs.yjfy.com/UploadFile/2007-4/20074289201562467.jpg
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it was still displayed 64M .

do you have the better software ..

i want to continue to test.......

thank you

First, I want to thank FalconFly and Rolo01 for re-uploading the pics.
I guess that there is a way to investigate for a BIOS hack and it should be easy: if ssstjy would dump the bios from his Voodoo, save it and upload it to a hosting server for us, then his BIOS could be compared with the regular "factory default" one. Ssstjy, would you agree to that?
It is my oppinion and I do no try to impose it to others, that this card, ssstjy's Voodoo PCI, cannot be a real, true 64Mb board, because there are only 4 chips of 8Mb RAM each for a total of 32Mb. I cannot belive until I see hard evidence that a manufacturer so important as Hyunday would wrongfully label 16Mb memory modules as 8Mb chips, just by misstake. There is also a clue suggesting that what we see soldered onto the PCB are common genuine 8Mb RAM chips: in order for a 16Mb memory module to function at it's full size, it must use a supplementar adress line than a 8Mb module; yet, in none of those pics done with such great detail, we cannot see any PCB trace at all connecting pin 21 for A11, for any of the 4 chips.
Well, my oppinion and nothing more...

Use this tool:
http://3dfxbios.stantoworld.co.uk/files/utils/dumpbios64.zip
... to dump a image of the card's BIOS and save it. Boot into MS-DOS and run the program and the BIOS from your Voodoo4 should be saved as BIOS.BIN.

Well, ssstjy, I am not the expert on those forums, not  on BIOS'es, but I will do my best to look into this situation. I think that it would be better if you would upload the bios.bin file onto a public free hosting server, like www.rapidshare.de so anyone here interested could download it and study it, but if you want to send it to me, my e-mail adress is Komponent at gmail.com

Chosen One is our resident BIOS expert

Hello Komponent
i had sent you the BIOS of V4 64Mpci
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after i flash the BIOS

it was still displayed 64M
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Quote:


Dudes, to put it in short words, Ssstjy had asked here for assistance to confirm a possible Voodoo4 PCI with 64Mb and I offered to help him as and if I could. Knowing that I previously had some experience in modding a Voodoo4 AGP to 64Mb, he decided to accept my advices and council as they were and I will now take the liberty to present the results.
Because we suspected here the possible case of a BIOS hack -and let it be known that it is very easy to edit a BIOS to display any desired value of memory at the post-screen, a.k.a. bootscreen- I suggested a radical move to confirm or infirm the fact of a real 64M Voodoo4 PCI: to save the BIOS for further study and to flash the card with the orriginal 3DFX BIOS 1.15, downloaded from Stanto's website. The advantage was that if there would have been only a BIOS hack in place, then after flashing the Voodoo4 with the common BIOS, it would have had to show the true amount of installed RAM.
Here are some pics with the steps taken by the progress of the opperation:
After booting the PC with the "64Mb BIOS" working on the card, he goes to DOS enviroment to the folder where the flashing tool program and the ROM image resides:

http://img405.imageshack.us/img405/3750/dscf0026of7.jpg

Ssstjy then launches the flasher with the orriginal 3DFX BIOS:

http://img75.imageshack.us/img75/4840/dscf0028jw8.jpg

The new BIOS is transfered to the Voodoo4 PCI and the old one -the one reporting 64Mb- gets saved in the process:

http://img75.imageshack.us/img75/9473/dscf0029dt9.jpg

The opperation is finished with no problems:

http://img75.imageshack.us/img75/3244/dscf0031jn1.jpg

After rebooting the PC... surprise; at the post-screen there are still displayed 64Mb of video memory, like before:

http://img75.imageshack.us/img75/2335/dscf0034ev3.jpg

OK, OK... the boot-screen still show 64Mb RAM, but how about some tests into Windows with the orriginal 3DFX BIOS 1.15 for Voodoo4 PCI, downloaded from a safe orrigin, Stanto's website:

http://img76.imageshack.us/img76/600/after1ah2.jpg

The diagnose tool softwares all see a video card vith 64Mb memory...
How about the first BIOS, suspected of hacks to show an incorrect value for the installed RAM? Ssstjy was kind enough to send it to me for study. If you dudes want to check it yourself, below it is a link to download it:

http://rapidshare.com/files/30406272/SAVE.ROM.html

After the first look, it is clear that none of the registers are different than they should have been. In fact, after using a HEX-editor to compare the files it is obvious that  the non-matching portion is the lack of the "www.v3info.co.uk" advertisement added into the code of the BIOS downloaded from Stanto's archive.
Now... you might know that there are ways to override the BIOS registers by hardware strapping resistors placed onto the PCB, and I cannot exclude that option; I am just stating the facts as I received them from the owner; but from my oppinion, the BIOS appears free of hacks and clean.
So, is it a true 64Mb Voodoo4 PCI? Well, we have no reason not to trust the info's from Sssty argumented so far with screen-shots and pics, or that the BIOS is not genuine. But from the pictures we can clearely see on the RAM chips the markings for 8Mb, not 16Mb modules and they are 4 of them for a total count of 32Mb. There are no visible supplementar A11 memory adress traces visible onto the PCB too...
Is this 64Mb Voodoo4 PCI the real deal? Well... look at the available evidences and decide for yourself if you can...

You are right again, master Obi. This was Ssstjy's ideea from the start; to get a second "regular" Voodoo4 PCI with 32Mb and to compare it with the one that reports 64Mb. Unfortunately, he was not able yet to find and to buy another Voodoo4 PCI...

Chosen_One, you are showing alot of modesty; we all know that you have searched for and found the rarest BIOSes from 3DFX and you have by now allmost all of the revissions. That leads me to a question for you... how should your BIOS collection be treated, as a private one or as a opened repository? I know that if someone wants a BIOS from you all that he has to do is ask for it by e-mail or by a private message and we all thank you for that; but would it also be possible to share the whole of them? That is, could you upload the entire collection of BIOSes to an internet server so anyone interested could download it, or will you keep it private? The reason behind me asking that is that you have a wonderfull collection with many very hard to find rom images and if -GOD prevent that- something happens to you or to your storage devices, they might get lost forever for the public... you know, it is about the story about not keeping all of your eggs into only one basket, he-he...

Ssstjy, great work; very well documented with the screenshots and pics.