I think these should be ok. IRQ 5 is sometimes needed for SB emulation, though dosbox defaults to 9.

The address ranges need to be different from Rendition. Some Speedy3D apps have weird hardcoded addresses and completely ignore what the PCI device query registers return. I have no idea why. I think for any additional video devices being emulated, a different address range should be used.

Some signs of life:

Need to figure out the texturing.

Got everything spaced correctly and some polygonal content is being rendered as a series of Quads. Texturing is still broken.

https://youtu.be/6bWNNzq4Jls

Also on Patreon:https://www.patreon.com/Rready/posts/3d-blast … ntent=join_link

Nascar 1 runs in slow mo with corrupted graphics:
https://youtu.be/JWabvVo_73o

Also on my Patreon:
https://www.patreon.com/Rready/posts/3d-blast … ntent=join_link

Rebel Moon (1995/VLB) runs with a black screen and menu sounds (no video).

A bit better now, though the 3D section has stopped working.
(Updated image with one without font corruption)

Tested
Scorched Planet no regression
Some tiny lines could be spotted on HUD
And variety of fps.

Quake II
No regression
Notes:
Underwater resolution should be higher than actual resolution, otherwise it will have distortion.

RaVeN-05 wrote on 2026-10-29, 11:20:

Tested Scorched Planet no regression Some tiny lines could be spotted on HUD And variety of fps. […]
Show full quote

Tested
Scorched Planet no regression
Some tiny lines could be spotted on HUD
And variety of fps.

Quake II
No regression
Notes:
Underwater resolution should be higher than actual resolution, otherwise it will have distortion.

Thanks Raven!

Edit
One thing to note is that the 3db vlb's internal texture formats are the same as the CGL texture constants from the header file. They're different to rredline /Speedy3D. I guess the microcode interprets the formats.

Nascar colours fixed, Rebel Moon splash screen works and Test3D now has a working 3D section without z-buffering:

Youtube upload doesn't seem to be saving. I'll update this with the right link:

Youtube link: https://youtu.be/99iaNxIu1_4

Patreon:
https://www.patreon.com/Rready/posts/3d-blast … ntent=join_link

Test3D 3D sections (seemingly) fully functional with z-buffering and (so far) everything:

https://youtu.be/IDO_dGzIO24

Also available on my Patreon:
https://www.patreon.com/Rready/posts/3d-blast … ntent=join_link

It looks like the 3DB VLB is a quad renderer.

Rebel Moon, looking a better. It's possible to move about, in slow motion. Chroma keying isn't working (yet) and it's very slow, probably due to direct mem writes.
https://youtu.be/DRrPwe6-0L8

Also available on my Patreon:
https://www.patreon.com/Rready/posts/3d-blast … ntent=join_link