nVidia Forceware driver 77.72 patch for 512MB VGAs \ VOGONS

nVidia Forceware driver 77.72 patch for 512MB VGAs

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First post, by RayeR

Posted on 2020-11-28, 02:00

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As you know, R.Loew made nvidia videomem size patch for >256MB cards, that modifies NVCORE.VXD of 82.69 drivers. A friend of mine asked me if the patch can be backported to 77.72 drivers because he claims the newer drivers renders artefacts in some games on his GF7800. I never had GF7800, only GF7600 and GF7900 and had no problems with 82.69 drivers (except shutdown problem). So I tried to look what the patch changed on NVCORE.VXD ver 82.69. I found 3 code hooks by JMP/CALL that referenced a piece of new code added in a caveat near EOF. I tried to find similar code in ver 77.72, patched it, copied new code and modified the offsets to match. I'm not sure that I found the right matching code and how much the 77.72 differs but some parts looked pretty similar. I only don't know what to do with 3 changed Bytes at offset 144-146h. I thought it may be a checkusm in LE header but it's further and my tool says the checksum is 0 even in original file. I hope Windows would not complain and load the driver anyway.

I cannot test it and he too coz his GF7800 had died. So if someone interested plese test it on GF7800/512MB and let me know how it works. Patched driver is temporarly here

~~http://www.rayer.g6.cz/1tmp/7772mod.vxd~~

rename to NVCORE.VXD and replace your version. Use with 77.72 don't mix with other version of installed drivers.

UPDATE: Permanent patched file location is now here:
http://windows98.xf.cz/index.htm#NV7722PATCHED

Last edited by RayeR on 2022-02-07, 03:28. Edited 1 time in total.

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Reply 1 of 13, by RayeR

Posted on 2020-12-27, 21:07

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The previous version of patched driver caused crash. This was probably due to Dword at 144h that I left untouched but it seems it may be code size so I had to adjust it. Now it should go a bit step further, file reuploaded:

~~http://rayer.g6.cz/1tmp/7772mod.vxd~~

Last edited by RayeR on 2022-02-07, 03:28. Edited 1 time in total.

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Reply 2 of 13, by RayeR

Posted on 2020-12-30, 04:20

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I got report that patched driver now works with 256MB VRAM card so anyone interested to try with 512MB?

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Reply 3 of 13, by RayeR

Posted on 2022-02-07, 03:28

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Daniel (for whom I made this mod) finally had a luck to buy 7800GT AGP with G70 chip and 512MB VRAM. He tested my patched w9x driver 77.72 and played some games on it without any problem 😀
Permanent patched file location is now here:
http://windows98.xf.cz/index.htm#NV7722PATCHED

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 8GB DDR3, 128GB SSD, GTX970(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo + LPC2ISA

Reply 4 of 13, by Imperator

Posted on 2024-08-17, 11:28

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Hello.
I tried to download the patched version you've made for 77.72.
Unfortunately the web page returned an error 404 - not found.
Would you be so kind and post it on another server and put the link so we can try it?
Thanks mate

PC 1: - Intel STL2 G7ESZ Dual Socket 370 Motherboard + 2 x Pentium III 1Gz CPU + 4x 1 Gb RAM +VooDoo Banshee
PC 2: - ECS K7VTA3 + Athlon XP 3000 + 1Gb RAM + 3dfx VooDoo 5 5500 AGP 64MB
PC 3: - ASrock 775i65G v2.03 + Intel QX6800 + 2GBRAM + ATI HD3850 AGP

Reply 5 of 13, by agent_x007

Posted on 2024-08-17, 11:48

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Have a archive file : LINK

Also, it returned 404, because it doesn't use https protocol (required at this point on all websites) :
Try here : http://windows98.xf.cz:8080 file you are looking for is "nvc7772p.zip [1 MB]"

Reply 6 of 13, by DarthSun

Posted on 2024-08-17, 15:17

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agent_x007 wrote on 2024-08-17, 11:48:

Have a archive file : LINK

Also, it returned 404, because it doesn't use https protocol (required at this point on all websites) :
Try here : http://windows98.xf.cz:8080 file you are looking for is "nvc7772p.zip [1 MB]"

Thanks! I downloaded it too. I use 82.69 on Madness machines, but I'll try this mod as well. The 77.72 / win9x driver is no longer up on the NV side, but it has come down from an alternative side.

The 3 body problems cannot be solved, neither for future quantum computers, even for the remainder of the universe. The Proton 2D is circling a planet and stepping back to the quantum size in 11 dimensions.

Reply 7 of 13, by RayeR

Posted on 2024-08-17, 19:16

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Hi, sorry my win98 collection website was completly deleted some year ago without any warning (but the domain could be registered again). I had not ful backup but I have most of files on various CD/DVDs. I restored only index.html yet and I can upload most of files on request. So for others I'll reupload the modded drivers...

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 8GB DDR3, 128GB SSD, GTX970(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo + LPC2ISA

Reply 8 of 13, by Imperator

Posted on 2024-08-18, 11:08

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@agent_x007

Thanks mate!
It is awesome to have all this quality stuff in one place.

@RayeR
Thanks mate for all your effort !

Reply 9 of 13, by RayeR

Posted on 2024-08-19, 03:46

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The file is back on http://windows98.xf.cz if any reup req. send me a PM...

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 8GB DDR3, 128GB SSD, GTX970(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo + LPC2ISA

Reply 10 of 13, by Condor.07

Posted on Today, 10:04

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I tested an MSI 7950 GT PCI-E graphics card with 512MB and it doesn't work.
I installed Driver 77.72 with the patch "7772MOD.VXD" renamed.
By the way, I don't understand what the "8269MOD.VXD" file is for.
With Driver 82.69, it works, but then the shutdown bug pops up, and Rudolf's patch doesn't work.
Thanks.

Reply 11 of 13, by Kruton 9000

Posted on Today, 10:30

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Condor.07 wrote on Today, 10:04:
I tested an MSI 7950 GT PCI-E graphics card with 512MB and it doesn't work. I installed Driver 77.72 with the patch "7772MOD.VXD […]
Show full quote

I tested an MSI 7950 GT PCI-E graphics card with 512MB and it doesn't work.
I installed Driver 77.72 with the patch "7772MOD.VXD" renamed.
By the way, I don't understand what the "8269MOD.VXD" file is for.
With Driver 82.69, it works, but then the shutdown bug pops up, and Rudolf's patch doesn't work.
Thanks.

If I remember correctly, the GeForce 7000 series is not compatible with 7x.xx drivers. You MUST use unofficial driver ver. 82.69 with all that it implies.

Reply 12 of 13, by Condor.07

Posted on Today, 11:24

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Kruton 9000 wrote on Today, 10:30:

Condor.07 wrote on Today, 10:04:
I tested an MSI 7950 GT PCI-E graphics card with 512MB and it doesn't work. I installed Driver 77.72 with the patch "7772MOD.VXD […]
Show full quote

I tested an MSI 7950 GT PCI-E graphics card with 512MB and it doesn't work.
I installed Driver 77.72 with the patch "7772MOD.VXD" renamed.
By the way, I don't understand what the "8269MOD.VXD" file is for.
With Driver 82.69, it works, but then the shutdown bug pops up, and Rudolf's patch doesn't work.
Thanks.

If I remember correctly, the GeForce 7000 series is not compatible with 7x.xx drivers. You MUST use unofficial driver ver. 82.69 with all that it implies.

That's true, but from what I read here, the user who opened this topic has created a patch that should also work with version 77.72 under the same conditions as 82.69

Reply 13 of 13, by RayeR

Posted on Today, 15:00

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I never claimed the patch worked for GF79xx. There are some nvidia GPU chips differences. Older GF7800 is based on G70 while 79xx on G71. And the patch was intended and tested with GF7800 AGP. So 7950 would require newer drivers 82.69. If R.loew's patch doesn't work there I cannot do anything with it. I have only 256MB card version so I didn't need his patch at all, it worked out of the box with 82.69 (except crippled windows shutdown).

Gigabyte GA-P67-DS3-B3, Core i7-2600K @4,5GHz, 8GB DDR3, 128GB SSD, GTX970(GF7900GT), SB Audigy + YMF724F + DreamBlaster combo + LPC2ISA

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