These cards have an integrated TDMS. But they are more limited than their Silicon Image counterpart I believe, not entirely sure.

Rawit wrote on 2026-03-05, 08:03:

These cards have an integrated TDMS. But they are more limited than their Silicon Image counterpart I believe, not entirely sure.

Ok, so chances are good that I can just add a port to this one then...

I've been checking it against a DVI port version of the card closely and I cannot see any omitted components on this card other than the port.

I would certainly try it. But I wonder if there is some sort of TDMS selection mechanism. I would inspect around the main chip as well.

Rawit wrote on 2026-03-05, 08:36:

I would certainly try it. But I wonder if there is some sort of TDMS selection mechanism. I would inspect around the main chip as well.

I believe cards usually detect resistance on a port to decide if it is the active output. But I'll have a good cross check when I have the card in hand.

High Res shots of the DVI version are hard to find...

Lostdotfish wrote on 2026-03-05, 08:39:

Rawit wrote on 2026-03-05, 08:36:

I would certainly try it. But I wonder if there is some sort of TDMS selection mechanism. I would inspect around the main chip as well.

I believe cards usually detect resistance on a port to decide if it is the active output. But I'll have a good cross check when I have the card in hand.

High Res shots of the DVI version are hard to find...

It's a Nvidia GeForce3 NV20, 4MX16 DDR 64MB, RGB, DVI-I, TV-DOWN, TV I/F, AGP4X reference schematic.
I hope it'll help.

Roman555 wrote on 2026-03-05, 09:14:

Lostdotfish wrote on 2026-03-05, 08:39:

Rawit wrote on 2026-03-05, 08:36:

I would certainly try it. But I wonder if there is some sort of TDMS selection mechanism. I would inspect around the main chip as well.

I believe cards usually detect resistance on a port to decide if it is the active output. But I'll have a good cross check when I have the card in hand.

High Res shots of the DVI version are hard to find...

It's a Nvidia GeForce3 NV20, 4MX16 DDR 64MB, RGB, DVI-I, TV-DOWN, TV I/F, AGP4X reference schematic.
I hope it'll help.

That is super useful for another project I had in mind.

The card that I am looking at above is an NV15 based - I think I've tracked it down to being a P30 A00 PCB Code:180-P0030-0000-A00 or P30 B00 PCB Code:180-P0030-0000-B00 reference design. Would you happen to have a schematic for that card at all?

Sorry, no schematic for NV15 or any GeForce 2.
Maybe NV17 will be useful - added. Also added NV25.
NV17 - P70, NV17, 2M/4MX32 DDR, 32MB/64MB, RGB, TV-out, video capture, stereo, AGP4X
NV25 - NV25, P83, DUAL DAC/TMDS, 128MB 4MX32 BGA DDR, TV IN/OUT, GOGGLES, AGP
There is BIOS src code for NV15. But I doubt I can upload it here.

The specs for the NV15 say it does have an onboard single link 165Mhz TMDS transmitter, so it should be possible to create a card without an external TMDS transmitter IC.As for why many cards didn't use the one onboard the GPU, there must have been an issue or shortcoming with the NV15/NV20 generation of onboard transmitters that forced card designers to use an external one. There wasn't a DVI spec change since the external transmitters for this gen are still revision 1.0.

Roman555 wrote on 2026-03-05, 16:48:

Sorry, no schematic for NV15 or any GeForce 2. Maybe NV17 will be useful - added. Also added NV25. NV17 - P70, NV17, 2M/4MX32 DD […]
Show full quote

Sorry, no schematic for NV15 or any GeForce 2.
Maybe NV17 will be useful - added. Also added NV25.
NV17 - P70, NV17, 2M/4MX32 DDR, 32MB/64MB, RGB, TV-out, video capture, stereo, AGP4X
NV25 - NV25, P83, DUAL DAC/TMDS, 128MB 4MX32 BGA DDR, TV IN/OUT, GOGGLES, AGP
There is BIOS src code for NV15. But I doubt I can upload it here.

Thanks.

Another question. Do you have a copy of the NV20 A09 specification (180-P0050-0000-A09)?
There are some components removed and not referenced on the B03 schematic above

This is the only nv20 schematic I've got