3dfx Voodoo1 pink screen with AMD K6-2 \ VOGONS

3dfx Voodoo1 pink screen with AMD K6-2

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First post, by Arandy

Posted on 2025-01-14, 00:14

Arandy Offline

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Joined: 2017-04-07, 19:01

Hello all 😀

I have a bizzarre issue. My 3dfx voodoo1 is working fine with a pentium MMX 200MHz, a PcChips M575 mainboard, 128MB sdram, matrox mystique 220 4MB. It's very beautyful and I play many GLide games with it.

Latest PCchip M575 bios enables support for amd K6-2 and so I've purchased a new cpu an AMD K6-2 450MHz. I've configured bus @83.5Mhz, multiplier to 5.5 and fixed AT bus to 7Mhz (My cdrom goes crazy for every frequency above it).

So far so good, I started my Windows98SE and system boots fine, I enter into the system, check peripherals, all ok.

BUT! Every time I try to play a game, the screen goes to a uniform pink color and basically freezes. I tried to reboot to pure DOS and run Tomb Raider 3dfx for pure DOS...and it works beautifully...I've run Mojo.exe...no issues reported.

I tried different drivers, from original ones to those downloaded from 3dfxzone. Last one I've installed is "Iceman 3.01.01" driver. No changes, always uniform pink sceeen (sometimes is white).

Desperate...I switched back to my Pentium MMX and....All games works!! WTH?!?!?!

It seems there is some compatibility issue between voodo card and AMD cpu. Am I wrong?

Do you have any clue on what happens when AMD CPU is installed?

Cheers 😀

Reply 1 of 6, by Thandor

Posted on 2025-01-14, 08:14

Thandor Offline

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Have you tried installing the 3dfx Voodoo1 V3.00.01 driver instead of the latest reference driver? If it still doesn’t work, make sure you have removed the latest reference driver successfully.

thandor.net - hardware
And the rest of us would be carousing the aisles, stuffing baloney.

Reply 2 of 6, by Kruton 9000

Posted on 2025-01-14, 11:17

Kruton 9000 Offline

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450 MHz CPU @ 83.5MHz bus is too fast for Voodoo 1. Try lower your bus frequency to 66 MHz.

Reply 3 of 6, by Arandy

Posted on 2025-01-14, 16:00

Arandy Offline

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Rank: Newbie
Posts: 14
Joined: 2017-04-07, 19:01

Hello Kruton,

thanks for your suggestion. I tried 66Mhz => no change in behaviour. 🙁(

Kruton 9000 wrote on 2025-01-14, 11:17:

450 MHz CPU @ 83.5MHz bus is too fast for Voodoo 1. Try lower your bus frequency to 66 MHz.

Reply 4 of 6, by Arandy

Posted on 2025-01-14, 16:05

Arandy Offline

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Rank: Newbie
Posts: 14
Joined: 2017-04-07, 19:01

Hey Thandor,

good suggestion, but...how do I remove all voodoo installed drivers? There is nothing in applications menu, nothing inside remove apps (control panel). Each driver came with just a zip file contaning inf file and dll and other files. No exes.
Whe I remove a device from device manager. It says that it will remove the device...It says nothing about removing files...so the files stay there. Next boot up win98 detects the voodoo again and installs previopus drivers..

Should I try finding files manually and delete them?

Thandor wrote on 2025-01-14, 08:14:

Have you tried installing the 3dfx Voodoo1 V3.00.01 driver instead of the latest reference driver? If it still doesn’t work, make sure you have removed the latest reference driver successfully.

Reply 5 of 6, by Thandor

Posted on 2025-01-14, 18:07

Thandor Offline

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Joined: 2014-08-16, 07:02

Arandy wrote on 2025-01-14, 16:05:
Hey Thandor, […]
Show full quote

Hey Thandor,

good suggestion, but...how do I remove all voodoo installed drivers? There is nothing in applications menu, nothing inside remove apps (control panel). Each driver came with just a zip file contaning inf file and dll and other files. No exes.
Whe I remove a device from device manager. It says that it will remove the device...It says nothing about removing files...so the files stay there. Next boot up win98 detects the voodoo again and installs previopus drivers..

Should I try finding files manually and delete them?

Thandor wrote on 2025-01-14, 08:14:

Have you tried installing the 3dfx Voodoo1 V3.00.01 driver instead of the latest reference driver? If it still doesn’t work, make sure you have removed the latest reference driver successfully.

You can try installing the older driver first without removing the newer one. It might just overwrite the newer files. Make sure you reinstall the driver by manually selecting the driver in Device Manager (via "Have Disk" if I remember correctly). If the problem persists you can try removing the old driver by deleting the 3Dfx files in C:\WINDOWS\SYSTEM32 (if I remember correctly) and then install the older drivers again.

To clean up after the installation you can delete the files in C:\WINDOWS\TEMP. I believe that is the default unpack directory of 3Dfx driver. It has nothing to do with your problem but it just saves on diskspace 😀.

As for the clock-frequency: the Voodoo Graphics doesn't like high CPU clock frequencies but I think 450MHz will be within the limits. If you hit or go over 600MHz you might run into problems. The 83MHz bus (and 41.5MHz PCI clock) should pose no problem. I used to run an overclocked (57MHz) Voodoo Graphics card at 83MHz FSB on a Pentium and Pentium II back in the day.

thandor.net - hardware
And the rest of us would be carousing the aisles, stuffing baloney.

Reply 6 of 6, by Arandy

Posted on 2025-01-14, 23:32

Arandy Offline

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Rank: Newbie
Posts: 14
Joined: 2017-04-07, 19:01

MATE!!

It worked! I deleted all files and registry entries related to 3dfx and reinstalled the driver (reference one) after a reboot.

All games finally are working with the new cpu!!

Thank you for the help 😀

Thandor wrote on 2025-01-14, 18:07:
You can try installing the older driver first without removing the newer one. It might just overwrite the newer files. Make sure […]
Show full quote

Arandy wrote on 2025-01-14, 16:05:
Hey Thandor, […]
Show full quote

Hey Thandor,

good suggestion, but...how do I remove all voodoo installed drivers? There is nothing in applications menu, nothing inside remove apps (control panel). Each driver came with just a zip file contaning inf file and dll and other files. No exes.
Whe I remove a device from device manager. It says that it will remove the device...It says nothing about removing files...so the files stay there. Next boot up win98 detects the voodoo again and installs previopus drivers..

Should I try finding files manually and delete them?

Thandor wrote on 2025-01-14, 08:14:

Have you tried installing the 3dfx Voodoo1 V3.00.01 driver instead of the latest reference driver? If it still doesn’t work, make sure you have removed the latest reference driver successfully.

You can try installing the older driver first without removing the newer one. It might just overwrite the newer files. Make sure you reinstall the driver by manually selecting the driver in Device Manager (via "Have Disk" if I remember correctly). If the problem persists you can try removing the old driver by deleting the 3Dfx files in C:\WINDOWS\SYSTEM32 (if I remember correctly) and then install the older drivers again.

To clean up after the installation you can delete the files in C:\WINDOWS\TEMP. I believe that is the default unpack directory of 3Dfx driver. It has nothing to do with your problem but it just saves on diskspace 😀.

As for the clock-frequency: the Voodoo Graphics doesn't like high CPU clock frequencies but I think 450MHz will be within the limits. If you hit or go over 600MHz you might run into problems. The 83MHz bus (and 41.5MHz PCI clock) should pose no problem. I used to run an overclocked (57MHz) Voodoo Graphics card at 83MHz FSB on a Pentium and Pentium II back in the day.

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