3dfx Archive - VSA-100 16MB mod?

exxe

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VSA-100 16MB mod?
14.01.10 at 19:13:06

is there a easy way to reduce a VSA-100 based card to 16MB?

other BIOS?
i cant find a BIOS that limits the memory

remove memory chips?
no, if you just remove two of them the card have only 64 bit databus left

other memory chips?
normal are four memory chips "512K x 32Bit x 4banks" per GPU
the 64MB mod use 1024k x 32Bits x 4Banks so best will be 256k x 32Bits x 4Banks or can i use 512K x 32Bit x 2banks ?
also i cant solder it

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RaverX God Member Offline Voodoo2 fan Posts: 533 Oradea, Romania Gender:	Re: VSA-100 16MB mod? Reply #1 - 14.01.10 at 22:24:49 I think that Komponent could help you downgrade the card (hardware way), and maybe provide a software mod (BIOS) for that - without the need to change the memory. But...why would you want to do that ?
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exxe God Member Offline ^^ Posts: 1316 germany	Re: VSA-100 16MB mod? Reply #2 - 15.01.10 at 13:31:33 get a SD memory V5 5000
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razrx God Member Offline 3dfx Addict Posts: 839 Great Lakes, Canada Gender:	Re: VSA-100 16MB mod? Reply #3 - 16.01.10 at 01:45:56 exxe wrote on 15.01.10 at 13:31:33: get a SD memory V5 5000 that sounds bass ackwards to me.... The board layouts are noticeably different, not to mention the lack of an AGP4X connector and NFR stickers. Good luck with your gimped Frankenstein card.
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Thandor

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What's the fuzz all about?

Posts: 226

Re: VSA-100 16MB mod?
Reply #4 - 16.01.10 at 01:54:46

razrx wrote on 16.01.10 at 01:45:56:

exxe wrote on 15.01.10 at 13:31:33:

get a SD memory V5 5000

that sounds bass ackwards to me.... Roll Eyes

The board layouts are noticeably different, not to mention the lack of an AGP4X connector and NFR stickers. Good luck with your gimped Frankenstein card.

I think exxe just wants a card that works like the V5 5000 Wink

. Not recreate one card to make it special/expensive or whatsoever. Personally I think it's interesting to have 4MB, 8MB and 16MB Voodoo3's and 16MB, 32MB and 64MB VSA-100's

. Just to see what impact it will have in benchmarks.

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« Last Edit: 16.01.10 at 01:55:42 by Thandor »

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Chosen_One Senior Member Offline Keeper of the BIOS-files... Posts: 499 Germany Gender:	Re: VSA-100 16MB mod? Reply #5 - 18.01.10 at 19:26:16 He just wants to bench a regular Voodoo5 5000 AGP (with SDR-SGRAM) against a modded Voodoo5 5500 AGP (with SDR-SDRAM) with only 32MB VRAM in total in order to see if there are differences in speed.
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exxe God Member Offline ^^ Posts: 1316 germany	Re: VSA-100 16MB mod? Reply #6 - 03.02.10 at 19:32:27 bump
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Komponent

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Re: VSA-100 16MB mod?
Reply #7 - 05.02.10 at 10:32:37

Sorry for the delay in answering to this, but I still am not completely well, so please do not put pressure on me...
If you want a regular 64MB AGP Voodoo5 modded to 32Mb, 16Mb for each VSA100 GPU, all you have to do is to solder two 4.7 kohm resistors on the PCB. Bellow you have in the picture to complete guide to do it yourself:

The proof that it is the working modd:

The modded card (sorry, all I have is the crap camera of my phone):

I hope that this is what you asked for. Have fun modding!

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Tim God Member Offline Posts: 1065 Gender:	Re: VSA-100 16MB mod? Reply #8 - 05.02.10 at 10:37:00 That's brilliant Komponent! Thanks for posting. Looks easy enough!
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exxe God Member Offline ^^ Posts: 1316 germany	Re: VSA-100 16MB mod? Reply #9 - 05.02.10 at 17:03:14 THX
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