An increase of memory on Voodoo.

Discussion of development and patch submission.
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RetroGIG94
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An increase of memory on Voodoo.

Post by RetroGIG94 » Sun 18 Sep, 2016 7:16 am

Has anyone ever thought of increasing the amount of memory that the voodoo cards on PCem have? Like for some games that require more video card memory to use the Voodoo driver. I was thinking that "Lego Creator" from 1998 was only on Software mode that it occurred to me that the game can't use the voodoo card due to the 4MB limitation the 3D accelerator has. And I was thinking that "Are there some games that only require a certain amount of 3D accelerator card memory in order for the game to use it?"

If you know of some games that have like voodoo card memory limitation if the games use it or not please leave a post.

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SarahWalker
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Re: An increase of memory on Voodoo.

Post by SarahWalker » Sun 18 Sep, 2016 9:40 am

PCem already allows up to 8 MB (4 MB framebuffer + 4 MB texture), which is the maximum the Voodoo chipset can handle.

RetroGIG94
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Re: An increase of memory on Voodoo.

Post by RetroGIG94 » Sun 18 Sep, 2016 4:00 pm

And is a voodoo 2 the same?

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omarsis81
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Re: An increase of memory on Voodoo.

Post by omarsis81 » Mon 19 Sep, 2016 12:00 am

RetroGIG94 wrote:And is a voodoo 2 the same?
Voodoo2 support up to 12 MB per card, so in SLI you get the whooping amount of 24 MB

Zup
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Re: An increase of memory on Voodoo.

Post by Zup » Mon 19 Sep, 2016 6:05 am

omarsis81 wrote:Voodoo2 support up to 12 MB per card, so in SLI you get the whooping amount of 24 MB
Are you sure?

AFAIK, in Voodoo2 SLI a card was drawing odd lines and the other card drawed even lines. The memory was NOT shared between cards, but both cards had to have the same textures loaded (because they were drawing the same scene). So you may get those 24 Mb installed but you could only use 8 Mb, because you couldn't control the framebuffer memory directly (4+4 Mb lost) and the other 8 Mb (texture memory) had to have the same contents on both cards. Note that having 2 cards on SLI allowed you to use 1024x768 resolutions.

On the emulator side, you should emulate both chips, both memories and then mix-up the output to get that emulation running. A "fake" Voodoo 2 card capable of running at 1024x768 and "overclocked" to about 150% could be easier (or at least don't get the burden and overhead of emulating two chips) to put into the emulator and offer about the same performance.

RetroGIG94
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Re: An increase of memory on Voodoo.

Post by RetroGIG94 » Mon 19 Sep, 2016 2:27 pm

How should we over clock it?

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omarsis81
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Re: An increase of memory on Voodoo.

Post by omarsis81 » Mon 19 Sep, 2016 3:59 pm

Read the second to last post from here Zup:

http://www.3dfxzone.it/enboard/topic.asp?TOPIC_ID=16996

RetroGIG94
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Re: An increase of memory on Voodoo.

Post by RetroGIG94 » Mon 19 Sep, 2016 9:21 pm

Well reading by the article, it take 2 voodoo chips to overclock it to 8mb of both the frame buffer and texture memory?

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omarsis81
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Re: An increase of memory on Voodoo.

Post by omarsis81 » Tue 20 Sep, 2016 12:56 am

RetroGIG94 wrote:Well reading by the article, it take 2 voodoo chips to overclock it to 8mb of both the frame buffer and texture memory?
Dude, overclocking has NOTHING to do with memory capacity!
Overclocking would be pushing the 90 mhz of the Voodoo2 chipset to increase performance

RetroGIG94
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Re: An increase of memory on Voodoo.

Post by RetroGIG94 » Tue 20 Sep, 2016 4:13 am

Oh and how are we going to give our PCem voodoo drivers 8mb for frame buffer?

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