VOGONS


First post, by 3dfx_fan

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What is the difference between Voodoo 1 with 1 TMU vs 2 TMUs in terms of game compatibility?
I know there is 1 game that is incompatible with Voodoo 1 with 2 TMUs, but work with Voodoo 1 with 1 TMU. That game is Diablo II.
Are there any other games that are broken by addition of 2nd TMU to Voodoo 1 or is Diablo II the only game that behaves this way?

Reply 1 of 3, by Postman5

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it would be interesting to see a Voodoo1 with two TMUs

Reply 2 of 3, by 3dfx_fan

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Postman5 wrote on 2025-02-17, 13:43:

it would be interesting to see a Voodoo1 with two TMUs

Never seen one?
Here you can see a few examples:
https://www.zxc64.com/shamans/0_17750_king_sh … an_100sb_alike/
https://www.zxc64.com/shamans/0_62935_king_sh … b_glossy_green/
https://www.zxc64.com/shamans/0_863_stoned_sh … s_voodoo_1_sli/
https://sdz-mods.com/index.php/2024/12/06/voodoo-4440h/
None of those 3D accelerator cards work correctly with Diablo II in 3dfx Glide mode.
Basically if Voodoo Graphics (SST-1) chipset has 2 TMUs (doesn't matter memory configuration/amount and doesn't matter if two same are SLI'ed and it doesn't matter if they are SLI'ed on same board/PCB or if two same separate boards are connected in SLI) Diablo II does not work correctly in 3dfx Glide mode.
But if you use Voodoo Graphics (SST-1) chipset with 1 TMU (doesn't matter memory configuration/amount and doesn't matter if two same are SLI'ed and it doesn't matter if they are SLI'ed on same board/PCB or if two same separate boards are connected in SLI) Diablo II will work correctly in 3dfx Glide mode.
So is that the only game exception that has this kind of problems or are there any other games that have problems when using Voodoo 1 with 2 TMUs?
I know/bet there are people here that have such extraordinary cards.
I never seen anywhere on internet mentioned that Voodoo 1 with 2 TMUs can have game incompatibilities. Usually people state that Voodoo 1 has 100% glide compatibility. So I thought that (two same) Voodoo 1(s) with 2 TMUs (each in SLI) and preferably with max amount of memory possible would be the best in terms on providing max power with 100% glide compatibility. But it seems it does not provide 100% glide compatibility. So max power with 100% glide compatibility is two same Voodoo 1s with 1 TMU each in SLI and preferably with max amount of memory possible?
Anyone knows more about Voodoo 1 with 2 TMUs game incompatibility (are there any other glide games except Diablo II that don't work with Voodoo 1 with 2 TMUs?) or am I the (un)luckiest man in the world and I found the only game which supports glide in entire universe that does not work correctly using Voodoo 1 with 2 TMUs (and all other glide games work correctly with Voodoo 1 with 2 TMUs except Diablo II and just no one but me tried to run Diablo II on Voodoo 1 with 2 TMUs)?

Reply 3 of 3, by sdz

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I haven't tried every glide game out there, but from my testing on the 4440H/Q3D 100SB/ Q3D 50SB, only DII+LOD has this issue.
I suspect it's not the fact that a V1 with two TMUs isn't 100% glide compatible, but that there is a bug in DII.
A while ago I also asked Anthony(zxc64) if he experienced issues with any other glide game in this configuration, and besides DII, he hasn't.