Looks awesome !!

RaVeN-05 wrote on 2026-04-01, 10:28:

Looks awesome !!

Not if you're trying to game on Win 11, but thanks!

Still haven't fixed the MDK scaling issue. V_LockBuffer/V_UnlockBuffer has the world background which needs to be blitted, but it doesn't scale correctly with some resolutions (and not just 1680x1050). The Pixel boundaries seem to go off.

@Goneau:

I found a bug in my 3dbVLB test app.

Could you rerun this test:
https://nirvtek.com/downloads/3DBVLB%2C.20260413.001.7z
MD5: 5de142ae96ae7d604f433bd75d64773a

I don't know if the IO port range will affect it.

[edit]
Port 0x279 appears to be the Isa pnp initialisation.

[edit 2]
Does anyone know how the isa pnp init works? Wikipedia has some details and Microsoft has a doc on the bios side of things.

sharangad wrote on 2026-04-01, 11:59:

Still haven't fixed the MDK scaling issue. V_LockBuffer/V_UnlockBuffer has the world background which needs to be blitted, but it doesn't scale correctly with some resolutions (and not just 1680x1050). The Pixel boundaries seem to go off.

The mdk stray pixel edge problem appears to occur in D3D mode as seen here:
https://www.youtube.com/watch?v=voz7N_2HmAM&t=321s

Bull Run 2k, Chenoa, Chicago (1999), Chicago (N99) and Chicagoland are Rendition Ready by default.
https://youtu.be/RaXbsoUq_Oo

3dbVLB.txt attached.

I have only one board with VLB slot (and it has only one VLB slot), that is PnP:
SOYO 4SAW2 (a Socket 3 - SiS 496/497 board)
and the VLB PnP init work the same as like the ISA PnP init (at least in appearance).
But with PnP, the 3D Blaster VLB get different resources than default, and some Rebel Moon don't like it so I have used DOS initiator program (INIT3D.EXE) in this board too.

sharangad wrote on 2026-04-13, 10:47:

@Goneau: […]
Show full quote

@Goneau:

I found a bug in my 3dbVLB test app.

Could you rerun this test:
https://nirvtek.com/downloads/3DBVLB%2C.20260413.001.7z
MD5: 5de142ae96ae7d604f433bd75d64773a

I don't know if the IO port range will affect it.

[edit]
Port 0x279 appears to be the Isa pnp initialisation.

[edit 2]
Does anyone know how the isa pnp init works? Wikipedia has some details and Microsoft has a doc on the bios side of things.

Thanks Gona!

The isa pnp should return a device Id from somewhere after this sequence, after setting all non-pnp cards to query mode with a key.

It looks like the test app is still broken.