Here's the specs of the two machines:

#1
Motherboard: DFI G4E620-B, Intel i845 chipset
CPU: Pentium 4 Northwood 3.06 Ghz
Ram: 2 Gb DDR333 ram (running at 266)
Primary: EVGA Nvidia 6800 Ultra
Secondary: Diamond Monster 3D, Voodoo 1, 4 Mb
Sound Card: Creative AWE64 Gold
Game Card: Thrustmaster ACM
Triple Boot: Windows 98 SE, Windows 95 OSR 2.5, DOS 7.1

#2
Motherboard: Intel VC820, i820 Chipset
CPU: Intel Pentium III 1000 Mhz (133 bus)
Ram: 512 Mb, PC-800-45 RDRAM
Primary: 3dfx Voodoo 5 5500 AGP
Secondary: Diamond Monster 3D, Voodoo 1, 4 Mb
Sound Card: Yamaha YF-724 w/ SB-Link
Triple Boot: Windows 98 SE, Windows 95 OSR 2.5, DOS 7.1

As you can see I'm trying to have my bases covered.

Okay I figured this out. The 3DFX Voodoo 1 doesn't work properly on chipsets after 440 LX (or 440 BX). I tried it on an Intel i820 motherboard with a Pentium III 1 Ghz and it just doesn't get read correctly on the PCI bus. I put the Voodoo 1 in an Intel 440 LX board with a Pentium II 266 and the card works perfectly in EF 2000 v2.0. I believe there is an issue with PCI compliancy here. It appears that the Voodoo 1 does not work properly with the PCI 2.2 spec. The 440 LX board is the last you can use it reliably on, possibly 440 BX, but I have not tried that one.

-photios

Yes i own a copy of EF2000 V2.0, and yes i run the game perfectly with no problem what so ever, i think it migh be your computer.
my computer:::
windows 98 secnd editn
250 ram
pentium 250
voodoo 2 card
sounblaster 5.1
i have no problem running the game, try changing your comp.
Good Luck.

Yeah, thanks. Check out my post before yours. I have successfully run this game on an Intel 440 LX and 440 BX board with various Pentium II and III processors. But it does not work on Intel boards beyond 440BX, that includes i820 and i815 boards.

Took some trial and error on different machines, but the Voodoo 1 works perfect on my BX board.

Im glad you can run your game, its an awesome game, enjoy it, you should also try DID F22 TOTAL AIR WAR, to me the best sim so far.
Glad i can help.

Well, it's been fifteen years since I've messed with this stuff, and now I'm messing with it again because I love this hardware and these games. My insights were right about the 440 bx being the last way to play static linked games with a voodoo without tinkering. Has to do with the hub architecture of the later Intel i8xx systems. You can get it to work, but it'll involve hex editing the .exe.

Further info here and here:
https://www.zeus-software.com/forum/viewtopic.php?f=9&t=6785

https://www.modlabs.net/forum/topic/60684/pag … 529#entry303529

photios, are you sure about that?

I seem to recall running the 3DFX version of EF2000 v2.0 on a ABIT KT7A back in the day.

Of course, I may be misremembering. I'm also not going to connect a Voodoo 1 to test this out. So, YMMV.