Killer Instinct Dual Board

Fantastic work @neku - still following after all these years!

Couldn't get it working on MacOS, but I was just looking more as a curiosity. Keen for the custom hardware solution!
 
I have a few KI Dual kits remaining to put up for sale later. These are the leftover PCBs I had that I built out to a kit.
With that said, can anyone confirm that they got a KI2 PCB working with neku's U98 boot rom to run KI1? If so, did you only change the EPROMs and HDD image to KI1 with no modifications to those? If we get confirmation, then I don't see why KI2 PCBs can't use the same kit. Difference will be the U98 concatenation with the correct boot roms for each game. KI2 will just use the stock anyIDE U98 boot rom and KI1 will use neku's. That's how it sounds like it "should" work. If there's any pitfalls for this logic, let me know.
 
Hello guys,

It's been way too long since my last post and i have great news to share!
As zouzzz hinted, the website for the custom bootrom/multiboot hardware project is finally live: https://www.killer-instinct.net

The latest stable build 2.0.1 of the single boot variant is out now and ready to download!

On the multiboot side, the hardware is still cooking, but here's the exciting part: starting today, you can grab the 2.1.0-multiboot beta bootrom along with a modified MAME binary (Windows x64/arm64, Linux x64, macOS arm64) straight from the website!

Just hit the soft reset combination (UP + START + FP) to bring up the selection menu.

And it gets better, 2.1.0-multiboot beta ships with a brand new redesigned bootstreen and a completely reworked multiboot selection menu. I can't wait for you all to see it!

Give it a spin and let me know what you think :)
Amazing work @neku
 
If it's possible add digit voices for KI2 : "Killer Combo", "Awesome Combo"... :-p
The audio rom'll be 1 Mo or 2 Mo.
 
@neku How is the DCS audio / bank / rom handled at this time?
I don't see any new sound roms on the site, am i missing something? Is sound on disk?
 
Ran it in mame and it works great
I do hear a bit of audio drop
Anyone else notice this?
Should not be different from the kinst machine.
@neku How is the DCS audio / bank / rom handled at this time?
I don't see any new sound roms on the site, am i missing something? Is sound on disk?
Sound roms are unchanged, still bank switching.
The MAME modification implements the bank switching and the hardware switcher driven by an IDE command.
 
Hello guys,

Screenshot 2026-08-31 at 19.14.10.jpg


Do you see something unusual on this screenshot ? :)

KI1.5d
d@0x88027D8C=0x0e00a263
d@0x88027DB0=0x0e00a263
d@0x880285A4=0x0e00a287
d@0x880285C0=0x0e00a287

KI1.5di
d@0x88027C7C=0x0E00A21F
d@0x88027CA0=0x0E00A21F
d@0x88028494=0x0E00A243
d@0x880284B0=0x0E00A243
 
Hello guys,

Screenshot 2026-08-31 at 19.14.10.jpg


Do you see something unusual on this screenshot ? :)

KI1.5d
d@0x88027D8C=0x0e00a263
d@0x88027DB0=0x0e00a263
d@0x880285A4=0x0e00a287
d@0x880285C0=0x0e00a287

KI1.5di
d@0x88027C7C=0x0E00A21F
d@0x88027CA0=0x0E00A21F
d@0x88028494=0x0E00A243
d@0x880284B0=0x0E00A243
Nice 😁
Can you add some fatalities from MK2 please? 🤣
 
Hello guys,

Screenshot 2026-08-31 at 19.14.10.jpg


Do you see something unusual on this screenshot ? :)

KI1.5d
d@0x88027D8C=0x0e00a263
d@0x88027DB0=0x0e00a263
d@0x880285A4=0x0e00a287
d@0x880285C0=0x0e00a287

KI1.5di
d@0x88027C7C=0x0E00A21F
d@0x88027CA0=0x0E00A21F
d@0x88028494=0x0E00A243
d@0x880284B0=0x0E00A243
Unused gfx?
 
Unused gfx?
The game contains code to display two types of hint when losing a game.
- Generic hints
- Special moves about the character you lost with (3 of it)

The code was disabled in the final release of the game by returning immediately in the pick/draw hint functions.

Screenshot 2026-09-01 at 10.03.57.png
Screenshot 2026-09-01 at 10.04.17.png
 
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Does anyone happen to have any eeprom stickers for KI and KI2?
Is there any for a DOM module for the HDD image?
Thanks
 
The game contains code to display two types of hint when losing a game.
- Generic hints
- Special moves about the character you lost with (3 of it)

The code was disabled in the final release of the game by returning immediately in the pick/draw hint functions.

Screenshot 2026-09-01 at 10.03.57.png
Screenshot 2026-09-01 at 10.04.17.png
Excellent work; I really think there are still more hidden things that haven't been enabled.
I was watching the video of the beta version and noticed quite a few details in it.
The intro is different, Cinder's name is "Meltdown," Spinal's laugh is different, the character selection music is different, the font is different and the character animation display lasts a bit longer on the versus screen.
Is this hidden in the game's code?
It would be truly amazing to have the beta version.
View: https://youtu.be/8A6gRoytqog?si=f01ZtBbrhPI3PPQt
 
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