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Someone (James, the guy behind the Gamedrive series of flash carts) is working on a flash cart and has been using my "protection-removed" sets to test with. You can see his updates on @GC8TECH's discord: https://discord.gg/XUs2gpBR @XtraSmiley

@h0ffman I've been following your work too! Nice stuff! As far as my process: A custom bit of code that checks opcodes and patches memory addresses for RAM regions (to move the main RAM's location, for example). Disassemble the 68K and rewrite & patch in functions as necessary. Sprite and fix...

Very cool! I've been wanting to do something like this with Zintrick.

A lot of NeoGeo games use "banks" for samples. The builder tool allows for this. What you see for this is usually a byte from 0x18-0x1f then followed by a byte that is >= 0x20 that plays from an alternative track list. For the sound builder, it's annoying because it will always apply whatever...

I have written a few things in z80 assembly, yes. It's easy enough to disassemble things with the mame disassembler.

Unfortunately no, regarding KOF2000, the data that holds the 'fix' (text graphics) is larger than what the vortex can handle. MOTW used a copy protection chip on MVS and AES cartridges called SMA. There were other games that used this chip, but SNK released versions that didn't have it (and...

FWIW I implemented this in FinalBurn Neo https://github.com/finalburnneo/FBNeo/commit/4210c1bcb4ec1930368f0fabcb31365c023868b9

It appears that the last 12mb are not used. It runs well on NeoGeo CD with only the first 4mb other than the broken sound. I believe this is related to the CMC sprite encryption that these games use requiring 16mb of data minimum. Pochi and Nyaa is another example of this FYI. Only the first...

For my hacks I just do add.b #$20, sound_command On the 68k side. You'll have to modify the.z80 it produces if you want to change the fixed commands. It doesn't offer any options to change these otherwise.

If it was just a dead ASIC, you should get an error on the screen, not just garbage. *edit* W/the ASIC completely disabled in FInalBurn Neo it shows this.

Pm for puzzli 2.

Disassembled, tweaked, patched in my code changes. Completely rebuilt the background graphics, modified the sprite data a lot to be compatible. I'm planning on compiling my tools eventually and making a wiki like the Neogeo development one.

Here's a demo of a project I've been working on a for a little while [2-3 weeks]. A port of Seibu's 1988 game Cabal. Here's a video of it on real hardware (Please excuse the low quality capture, my supergun (GBS Control)/hdmi (cheap USB dongle) capture method are not great) [it doesn't have...

Are you able to pm me a dump of your original program ROM? I'd be happy to try and patch it for you. It may be different or reference different locations/data in the asic.

Unfortunately, Demon Front, SVG, The Gladiator, The Killing Blade Plus, and Happy 6in1 all run the majority of their code on the ARM7 CPU (the same CPU that's in the Gameboy Advance!) that is built into the cartridge. It would be a total rewrite of the game to make those run on the 68K CPU (the...

It does run on a Fluffy cart.

Added Puzzle Star.

Added Photo Y2K.

Sorry. I keep forgetting. Try this. https://neo-source.com/stuff/puzzli2_combined.7z

Sorry, I took a look today and realize I totally borked that package. I'll try go get something else together soon.