Hi!

I wasted my last two days und had build a small 3dfx-screensaver, showing a rotating 3Dfx-logo in a white world.
The saver is based on a engine written by me and should support opengl & direct3d. The opengl-core has not been finished jet and is still a bit buggy. unfortunately i was not able to get the opengl-core running on voodoo-cards, so please tell me if you were able to get it running on a voodoo-system.
the default-render-core is Direct3D.
Other feautures:
-stencil shadows
-mip-mapping
-bilinear filtering
-play music in the background
-fog

to change the render-device, you need to replace the "3ddrv.dll" by one of those in the folder "3dfx_scr".

Here's the link to my homepage with a screenshot, the full source-code and the executable:
http://www.icefire-editions.de/html/index.php?html=inc/main/projekte/project.php&loader=3dfx%20Screensaver

If you have problems or suggestions, please let my know!

have fun,
IceFire

i've got my risers from ebay germany:

this is the one i've bought:
http://cgi.ebay.de/AGP-Riser-Card-hoch_W0QQitemZ280138224665QQihZ018QQcategoryZ32192QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

it works with no problems...
it might be possible that i buy this riser and send it to you....
in witch contry do you live?

an idea for the agp2pci-adapters:
http://cgi.ebay.de/Apple-Macintosh-Cube-AGP-riser-New_W0QQitemZ230062944024QQihZ013QQcategoryZ19521QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

this could be very interssting - but we'll have to modify it...

yes, how do we continue....
i have no idea at all how to solve this dual-chip problem...

i now tested a v5 agp in the a2 pin adapter and found out that no device is listed in the device manager.

kk... let us ask hank

sorry, made a mistake, have to check again...
edit:
yes, they're shorted together (p2, p3) and are also connected to the top end of r37, c33, r36.
im not able to check vsa-100 #2 - the pins are too damaged :/

but as i already said, i think the typedet pin is not the solution cause it is usually only checked by motherboards with agp universal bus....

but i think by connecting pin a2 to gnd, we'll force the motherboard to set the signal level to 1,5v -that might be the reason why it does not work with your card....
as you said, on your powercolor it worked to connect a2 to gnd to set the agp voltage to 1,5V and agp 4x. but we know that the v5 has problems with agp 4x mode (due to more than 1 device on the agp bus) and requires agp2x mode...

a good news: my new riser has arrived, i start doing stuff 2morrow!!!111

€dit:
one thing i can try is to connect the a2 pin at my v5 with one vsa-100 chip - it may work cause there's only one device at the agp bus.

sure, i will watch when im back home - i'm in holidays in paris until the 8. august.
when i'm back, i will take a close look

some questions:
-why pins A3 and A11? - theres no word about them in my agp pin out page...
well, i just read about them - i would say they're from no importance cause they force agp 3.0 mode...agp 2.0 is enough

-do u know what have to be supplied to the C2 + C3 pin?

i tried some modifications on the vref agp(a66 & b66) pin, but they did not work
i read something about a resistor network, but i dont know anymore what it exactly was...

i also have a blank v5 pcb (both vsa100 removed, that might help...

i think my new riser card might already be at home

one thing left i dont understand...
why the hell on earth does my adapter work on a agp2x board but not on a agp 8x board?!?

can u tell me what you're planning to do?
the pins p2 + p3 are the important ones, i think.
an agp 8x card also works with the vref (66a, b) pins disabled (i made some tape over it), i tried that....
the typedet pin is only checked on agp universal boards, so i don't think it is important to change it.
so i think we'll have to modify the pins p2 + p3 to signalize the vsa-100 that they should use the 1,5v signal level. but i don't know how to do. do you have icq? it would be a bit easier to share some technical details
the location of those pins is somehow a bit unmanageably ....

wow, nice done
gratulations!
i already bought a new agp riser card cause i don't want to cut my v5
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ih=018&sspagename=STRK%3AMEWN%3AIT&viewitem=&item=280132054387&rd=1&rd=1

and you did not connect any wire at all?

it's time 4 new world records AMD 64 + Voodoo5

i tried to supply the 3,3v to the agp pin A34 - its almost the same thing i've done with my agp riser card... but on the riser card, i disconnected some more lanes from the agp and connected them to 3,3V.....now, i connected the pin to the pin on the motherboard and supplied 3,3V there. it did not work :/
maybe i've made a mistake. i will try again soon!
€dit: the i875p board will now get a voodoo banshee pci

€dit2:
how about this little thing here:
http://cgi.ebay.de/Apple-Macintosh-Cube-AGP-riser-New_W0QQitemZ230062944024QQihZ013QQcategoryZ19521QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
it might work with voodoos
someone want to buy one and test it?

tried the modification on my i875p board....

now, the agp bus is dead^^
damn.. :/

well, when i got some more time, i will buy a second agp riser and a new agp 8x board and do the same modifications again... i might made a mistake...

maybe the nforce2 has very powerful agp power regulators. i will also buy abit an7 & check my adapter there.


it would be greaaatt success if this modification would finally run with no problems.

Sorry, project was suspended,
any change will be announced here.

thanks, hank...

i did not understand everything... ^^

even through you said that the board will be damaged after some time,i still will try my adapter with some old matrox g200 agp and some cheap agp 8x motherboards...
you told us that the TYPEDET pins is needed for the voltage configuration. but i know about some newer agp 4x/8x cards, that work with agp 4/8x (some geforce 2 models) even through the TYPEDET pin is not connected. some pages says that this pin is only checked in agp universal boards, on whose the geforce runs at 3,3V...
do u know whitch pins have to be modified to set the agp signal level to 3,3V? i think it is dependent on the vref pin, but i don't know which design concept i have to use...
if i would plug my adapter (with this agp 2x resistor divider) into a agp 8x board, do u know witch VDDQ i have to use? the replaced 3,3V VDDQ or the original 1,5V VDDQ of the motherboard? the vref pin is 66A, am i right?

but it would be much more easier to modify a v5 to support the 1,5V signal level..
if u know what to do, tell me and i will try it on my voodoo5 ^^!

hank, as far as i know, the agp vddq lanes are supporting the VRAM on the voodooo5. the vddq for the vsa 100 is reached by the power transformators on the upper right side of the card (at the molex connector).

on the other hand, my heavy damaged voodoo5 was able to run some time (bios post screen and bios)without connected molex. up to today, i don't know exactly how the hell this was possible (?).. that would mean that on this card the vsa-100 vddq was delivered over the agp bus.. or maybe through some condensators, i don't know.
the thread to this card in the german valtert forum:
http://forum.voodooalert.de/thread.php?threadid=11016

a short summary in english:
i bought a defective v5. the second (right one) vsa 100 overheated itself right after some seconds, while the primary vsa 100 stayed almost cool. i had no post at all.
then i removed the slave chip with a hot air fan, damaged the pcb a little bit, but the card did work. it was a bit slower then a voodoo4, but run stable. then, i was able to get a tray of unused vsa-100 chips. i installed one on the damaged socket with a fastening clamp, forget to plug the power cable in, but the card powered up.. for 3 seconds, then the pc switched off. i was able to see the post screen.
when i plugged the power cable in, nothing happend (no post screen).
wehen i removed the vsa-100, the card powered up like always..


as u can see on the foto, many pins has been ripped of the surface and many lanes are ripped out... i did not work very clean :-(

sry, pic removed through traffic problems..
some more photos of the card:
sry, pic removed through traffic problems..
well, hope hank knows what to do now ^^.

hm, there's the usual god and bad news...

the bad: i still dont get a post screen with the vref modification for the agp 2x standart (i connected vref to pin 66A - i dont know what 2 do with 66B - the documents says that this pin is used for the signal from motherboard to graphic chip... i dont think that this one has to be used....).

the good one: on the i875p motherboard, i get a vga beep when installing the v3 with adapter, but i still dont see any post screen.

what i will do now:
-> make more test with a pci video card, try to get it running as secondary device, etc.etc.etc..................

-> if that will not work, i will try to build the kind of vref modification used for the agp 1,5V...

good night!
greetings from the cold southern germany ^^

€dit:

I made some test, unfortunately i don't know if the i875p chipset based board had made the vga beed without the vref modification. the i845 sys still freezes when trying to initialise the voodoo3... damn.... %/(§$)/(§%%$"

i had checked the resistors and i found out that the deviation is almost 8%.... i will buy some new ones in the next time...

no, i want to build the one on page 39... this one is for the agp 2x mode, so might work with this adapter!
well, if this also doesnt work, i will try to build the one on page 40....

€dit:

everything bought ! i think i will build this construction in the following days...

hm, he still did not replied me...

but i think we should be able to solve that problem. it is not impossible....well, tomorrow, i will buy some resistors an capacitators and will try to build this ..."network".

hi guys!

look: http://pinouts.ru/Slots/agp_pinout.shtml

i've cut every pin witch is described as a 3,3V VDDQ lane on the agp 1.0. specification but a 1,5V VDDQ lane in the agp 2.0 specification.

f.ex. pin 34A,B, 40A,B, etc.

i don't know axactly witch pins i had connected... sorry
you also need to connect the pins on the second agp notch. (one of them has to be connected to GND!)


well, i studied the documentation about the rampage chip...

"AGP_VREF_1_5VAGP Voltage Reference: This input supplies the switching threshold for the AGP
recievers for the 1.5V case. This is derived from a resistor network consisting of a 210
ohm 1% resistor to VDDQ and a 158 ohm 1% resistor to ground. There is a 0.1 uF
capacitor in parallel with the resistor to ground.
"

"
AGP_VREF_3VAGP Voltage Reference: This input supplies the switching threshold for the AGP
recievers for the 1.5V case. This is derived from a resistor network consisting of a 210
ohm 1% resistor to VDDQ and a 158 ohm 1% resistor to ground. A second RC network
cocnsists of a 210 ohm 1% resistor in series with a 560 pF cap to VDDQ and a 158 ohm
1% resistor in series with a 560 pF cap to ground. This is total of four resistors and two
caps."

i didn't understand much, but i think the vref lanes are a network of resistors and capacitators connected to the VDDQ lanes. that means that the vref signal is dependent of the vddq voltage. due i have no idea at all what i habe to construct to imitate this network, i've got an idea:
afaik the ati rage fury maxx has an agp 4x connector but is only able to run at 3,3V. as i was able to se on some other fotos, the vref lanes are existing on the pcb. as you can see in the documentation of  the rampage, the vref signals on the 1,5V and 3,3V cards are different (well... i'm not sure). due some users where able to get the rage running on an agp 8x board, that would mean that the vref on the board  is forcing the chipset to deliver a 3,3V signal. now, if we would connect the vref lanes on a rage fury maxx with the (empty) vref pins on the voodoo5, would plug the rage fury maxx in an agp 2x board (in order to have it run correctly), we should be able to tell the agp 4x/8x bus that he should deliver his damn 3,3V...
well, i need to buy a rage fury maxx and a second riser card...

or i need help of somebody who understands exactly what i have to build for a resistor network mentioned in the rampage documentation ^^
.

i appologize for my bad english (one more time)... but right now, i'm in holidays and my last english lessen has been 4 weeks ago...

greets
IceFire

Ps: and a happy new year to all voodoo users ;-)

€dit:

m14radu: thank you for the documents!
in fact they say exactly what i had assumed. it should now be much easier for me to build the resistor network for the pins 66a,b - the vref pins...

€dit2:

i found the vref resistor network on a voodoo4...^^ it really looks close to the configuration describled in those 3 documents... but on a voodoo4, the resistor network is kind of the agp 4x speed mode. we need a card on witch the agp 2x speed mode is build on. well, i dont know what kind of resistor network is build on the rage fury maxx :/
-> but we're getting closer

wow, thank you!

i will need some time to understand the important things... ^^