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Voodoo5 5500 on VIA K8T800Pro ( AGP 4x ) (Read 4001 times)
m14radu
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Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
24.07.07 at 20:52:32
 
Hello,

Well, taking into accout the information and advices from Komponent and by reading the mod that the Italian dude did it ( on forumzone.it) , I decided to try myself this mod.
Because a Skt.939 board  and a Venice 3500+ CPU were layng around, I decided to try the mod on this platform.

Test System:
Athlon 64 3500+ - Skt.939
Mobo: MSI K8T Neo2-F V2.0
Voodoo5 5500 AGP
512 DDR RAM ( only 266 MHz FSB )
40Gb HDD
Enermax PSU


So, I decided not to Modifiy the AGP Slot on the Motherboard – Reason: if the Mobo get burned, i can change it any time on warranty  8)
So that the next step was to cut the noch on the Voodoo5 card.
After a closer look an the AGP pinout, the pins from 42 to 44 came into discussion.

Pin            Side A           Side B

42       Reserved            3.3Vaux       
43       Ground            Ground       
44       Reserved            Reserved
     
After a closer look at the voodoo5 card, at these pins, I found out that:

Pins 42 ( both sides ) and 44 are not connected. Tongue
Pins 43 are connected to ground – this was confirmed by measuring them !
Well for the pin 43 there is a soldering point, witch is for every situation available. ( I thought that in the worst case when the card don’t start in the skt.939 Mobo, remains  the possibility to rescue the voodoo board by sodering this points to ground – luckely this step was not necessary )

The cutting operation mus be done with very much attention and patience !
Don’t hurry up ! Take care to eliminate every metal pieces and any rest that can later cause a electrical shortcut.
You will need the following Tools:

...

In the Foto you can see the modified card:

...

The area for Pins 42,43 and 44 was cuted. Unfortunately I was afraid to cut deeper in the card, in order not to damage some traces.
This lead to the following problem: the card did not stay very well in the AGP Slot.
This is a problem that should be fixed . ( The AGP Slot on the Mobo can be slightly modifyed….)
So, after this operation, I tried to start the card in my old Epox 8K5A2 board with universal slot. The card started without problems… it was a very happy moment for me  Grin . my voodoo card was alive !
Then, the Skt 939 Board must be prepare for the voodoo5.
I started the Mobo with an agp4x card. Then the AGP Voltage in Bios was modified to 1.85 Volts, and the AGP to AGP4x. ( This settings remains available with the moded Voodoo5 card Grin! )

...

...

Then I pluged the voodoo5 card into the Mobo and …..
The card started !!!!

It was for me a glorios moment.
See the pictures.

...

...

...

The board is running from about 24 hours – continuously. No freeze, no BSOD…
The K8T800Pro is not hot; no components on the Voodoo board or on the Mobo are excessively hot…everything seems to work fine.
But…

3dmark2001 is hangig up in dual mode.
In single mode there is o problem !

...

I manage to start some games:

Call of Duty – no problems.
Start Treck Armadia – no problems. Even 4xFSAA is working well.
Edie Hard – Nakatomi Platza – no Problems.
Flatout2 – no Problems.
The Benchmark "Final Reality" also run without Problems.

Two Remarks:

1. I did not supply the Pin A34 with 3.3Volts like the italian dude did it – I don't agreed with this. Even the card is not rock stable in all application, I’m sure that Komponent will come with a solution.
I now, that the VSA100 must now operate with 1.5Volt signals.( the AVR Pins Problems..) Now they are probably working still with 3.3V signalling.
2.I did not connect the Pin2 from the Voodoo card on ground. ( TYPEDET ).

Many thanks to Komponent for his advices / informations and to the Italian dude ( ciacara ).
With theyr support / ideas / advices  this Projekt was possible.

Please, fell free to comment my experiment.


Regards.
Radu.
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« Last Edit: 24.07.07 at 21:01:31 by m14radu »  
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #1 - 24.07.07 at 21:40:35
 
Grats man. Since you got the card working without 3.3v I got a sence you will finally get through freezing and other drawbacks and you might get finally a voodoo 5 on 1.5v agp Smiley
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« Last Edit: 24.07.07 at 21:41:02 by outlaw »  

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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #2 - 25.07.07 at 00:04:36
 
Excellent Radu!!! Smiley

ps. Beware. I had my V5 5500 AGP with notch AGP4x working without problems under Abit IS7-G until the card died three month later. 

Oscar
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #3 - 25.07.07 at 00:20:06
 
Quote:
The board is running from about 24 hours – continuously. No freeze, no BSOD…
The K8T800Pro is not hot; no components on the Voodoo board or on the Mobo are excessively hot…everything seems to work fine.
But…

3dmark2001 is hangig up in dual mode.
In single mode there is o problem !

I manage to start some games:

Call of Duty – no problems.
Start Treck Armadia – no problems. Even 4xFSAA is working well.
Edie Hard – Nakatomi Platza – no Problems.
Flatout2 – no Problems.
The Benchmark "Final Reality" also run without Problems.




Gratz on getting the card running man. Very nice to see.

I do have a question about the above statement though, wouldn't the locking up in dual mode be the same reason why the 4500's could run with a 1.5v in the first place and not the v5's because of something to do with the agp bridge chip or something? I'm just asking because if it was this semi simple of an issue to do I don't know why this hasn't been done more on a regular basis that's all.

I love the seeing the work done, don't get me wrong, I'm just trying to understand it as you go that's all.
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #4 - 25.07.07 at 00:31:39
 
The VSA-100 is a native 1.5 volt part (aside from some poor PowerColor boards that run at 3.3), something about the Voodoo5 design is not compatible though.

It is to do with the SLI setup, not the chip itself.
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #5 - 25.07.07 at 00:42:09
 
So it works - but effectively it's only in single mode...which is just like a Voodoo 4. Undecided

Does anyone know why the V5 SLI setup is flakey at 1.5V? ???

Could it be as simple as the fact that each chip requires 1.5V on it's own - and an overall 1.5V is not enough to power both VSA's. ???
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #6 - 25.07.07 at 03:17:20
 
Quote:
So it works - but effectively it's only in single mode...which is just like a Voodoo 4. Undecided


Soemething to consider- The area where the notch is could have something that is required for dual chip operation.

There is a modding thread started by Hank on the Italian board where he indicated that there were some important traces in the area that was sliced.

The question had been brought up in regards of a 5500 being modded for AGPx4.
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #7 - 25.07.07 at 06:53:00
 
@Osckar: did u have the same Problems in dual mode ?
Pls. Tell us about your experience.

It can be something about the Voodoo5 design that is not 100% compatible ... I'm affraid that it's also a problem with AGP signaling but i duno how to read these signals without an osciloscope  Wink
It's interresting that the card is rock stable in single mode.
Could these be a reason why 3dfx release only the voodoo4 for AGP4x ? ( single chip )
In dual mode the 3dMark2001 freeze at the end of the second test, always there..return an device failure error.

...

I tried also to reduce the frecvency of both VSA card to 100MHz ( like one of the Gary's Prototype ) but the test still freeze at this point.
Also tried different drivers, the best remains the Amigamerlin driver. The drivers afaik supports the AGP4x, so there should be no problem.

...

But check this out.

Lavalys find the both VSA chips:
One it's AGP4x, and enabled, the other remains at AGP1X, and disabled.

These could be the reason ?

...

...

One more thing: Can somebody tell me how to read the strapinfo bits ? One of these must be changed for properly AGP4x function.

The Powerstrip Software it's unable to tell the actual AGP transfer rate !

...

If somebody has ideas / improvments proposal , i can put them in practice on this card .
Just feel free to tell what to try  Wink
I'm sure that we are on the right way, and now it's only a problem of time until these compatibility and stability issues are fixed.

One more think: The grounden pins that i cut out to realize the AGP4x noch, can be connected to the ground. Maybe these will make the card stable again. But first i will try again the card in my Epox Mobo, with Universal AGP Slot. If there is everything ok, then this is not the reason.
Im on vacancy now, and i luckely have a lot of time to experiment this mod  Grin

a short movies on yotube:

http://www.youtube.com/watch?v=aWemWC-Vnok


Regards.
Radu.
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« Last Edit: 25.07.07 at 09:35:13 by m14radu »  
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #8 - 25.07.07 at 07:50:04
 
ok i'm not as smart as some of you hear but i do want to help and also understand as much as possible, so i have a few question's Roll Eyes

1) i thought that the reason the multi gpu cards wouldnt work was cause agp standard 2.0 didnt support them and that standard 3.0 that came out with 8x agp did?

2) If above is true to any extent then if a unerversal card which is 3.0 compliant 1x2x4x8x shows a setting of 1x2x4x 1.5 volt in bios then you would be using the 2.0 standard, which would mean it should show something like 4x8x in the bios which should be the 3.0 standard.

3) OK so now im reaching, so here goes, could it be that the 4500agp worked at 4x 1.5volt because it was a single gpu and met the 2.0 standard but the 5500 being a multi gpu could not meet the standard of 2.0 and now it could meet the standard of 3.0 but may need the 3.3 volts to be stable.

4) one more thing, it seems in the unerversal slots that support 3.0 and of course 2.0 make the distinction with a3 and a11 i think it is, so i'm just wondering if that needs to be looked at for both vsa's to work right.

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« Last Edit: 25.07.07 at 08:41:54 by N/A »  
 
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #9 - 25.07.07 at 08:43:37
 
Hope this helps

http://www.lostcircuits.com/video/asus_v9280s/3.shtml

Also this

How does the mainboard recognize the AGP port mode? The system powers up and goes through POST. Then the graphics card and the mainboard that comply with Universal AGP 3.0 and Universal AGP 1.5V 3.0 specs determine the port mode by means of specific contacts on the AGP connector. It is "GC_DET#" contact (Pin #A3), which detects graphics card's ability to work in AGP 3.0 mode (if the card supports AGP 3.0 or Universal AGP 3.0, this contact is connected to the common wire, otherwise it's not connected to anything). The second one is "MB_DET#" contact (Pin #A11), which detects mainboard's ability to work in AGP 3.0 mode (if the mainboard supports AGP 3.0 or Universal AGP 3.0, this contact, like GC_DET#, should be connected to the common wire, otherwise it's not connected to anything).

So, if the both contacts are "grounded" in the graphics card and mainboard, they are checked and then AGP 3.0 is turned on during POST, otherwise - AGP 2.0. Later on, when the system is at work, you can't change the port mode, only the data-transfer rate can be set at either 4x or 8x for AGP 3.0 and 1x, 2x or 4x for AGP 2.0.

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« Last Edit: 25.07.07 at 08:44:58 by N/A »  
 
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #10 - 25.07.07 at 09:28:10
 
Quote:
@Osckar: did u have the same Problems in dual mode ?
Pls. Tell us about your experience.


Check it
http://service.futuremark.com/compare?2k1=8265718

Here you can see like my V5 5500 AGP4X worked with 2 VSA-100.

ps. I think is better to buy an AGP RISER AGP4x - AGP1x. So you don't need to modify the card. Wink
ps2. Would help a motherboard to able to handle  AGP Voltage more high than 2V?

Oscar
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #11 - 25.07.07 at 10:04:36
 
A closer look at Pins #3 and #11.
They are not connected, so that means AGP 2.0 !

...

In the Pictures that i post before  u can see that the BIOS ,detect the AGP 2.0 standard !

@Oscar: I need to take a closer look at the APG4x noch area on your Voodoo5 card  Wink
If a higher voltage will bring something, i can't say... btw. i did not find a software that is able to tell me some values about the AGP Signaling voltages Smiley ( an online data aquisition software  - dunno if something like this exist anyway but would be nice..)
Yes, with an AGP riser will be better and easyer ..but i did not find one here in my Country.
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« Last Edit: 25.07.07 at 10:08:00 by m14radu »  
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #12 - 25.07.07 at 14:34:32
 
more replies at:
www.3dfxzone.it/enboard/topic.asp?TOPIC_ID=6626


EXCELLENT WORK!! i really hope u can get SLI mode (dual)

i guess u should supply the Pin A34 with 3.3Volts.....

but i would connect
pin A43 and B43 to Ground Ground
and B42 to 3.3Vaux


BYE!
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #13 - 25.07.07 at 18:37:07
 
Quote:
Hello,
Well, taking into accout the information and advices from Komponent and by reading the mod that the Italian dude did it ( on forumzone.it) , I decided to try myself this mod.

[...]

Many thanks to Komponent for his advices / informations and to the Italian dude ( ciacara ).
With theyr support / ideas / advices  this Projekt was possible.
Please, fell free to comment my experiment.
Regards.
Radu.


Hey, Radu, great project! Keep it up!
But, huh... I failed to see how was I ever of any help to your work; I wish I had, but realy there are absolutely no credits here for myself; but you are welcomed anyway, he-he...
Please keep us up to the news regarding your projects.
Respect!
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m14radu
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Re: Voodoo5 5500 on VIA K8T800Pro ( AGP 4x )
Reply #14 - 25.07.07 at 20:22:53
 

@ Komponent and @ All 3dfx Fans:

Every information that it's comming from you bring us near to our common Goal:

"The 3dfx Hardware has to live on."


That's why we are here.

Thank you all for your support my Friends.

Radu.
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