Konami developed a graphic chip called 007121. This was used in several games. This project aims to accurately replicate those games in modern electronics, namely FPGA systems.

MX5000 uses two K007121 but the second one is connected in such a way that it only serves to extract the 4-bit palette for the current pixel.

Games using the KONAMI-2 CPU:

• 88 Games
• Aliens
• Ajax
• Block Hole
• Chequered Flag
• Crime Fighters
• Escape Kids
• Gang Busters
• Haunted Castle
• Parodius
• Super Contra
• Surprise Attack
• Roller Games
• The Simpsons
• Thunder Cross
• Vendetta

Binary RBF files for MiST, MiSTer and SiDi will be provided for in https://github.com/jotego/jtbin

The score colour in Fast Lane might be wrong. I do not have the board and I have not found any original footage to verify it. However, the way the chips are connected is the most logical way and the chip count matches that seen in PCB photos. Thus, I think it is most likely right.

You need to have Quartus installed in a linux machine. Clone this repository and its submodules following standard git instructions. Go to the root folder and type source setprj.sh. Now you can compile the core with jtcore contra -mist Use -mister or -sidi if appropriate.

Also check the instructions in modules/jtframe/doc/compilation.md

Use the mra file in rom/mra for MiSTer. For MiST/SiDi, convert the mra to a rom file using the mra tool.

Furrtek made a full RE of this chip here

The internal register mapping has R/W access from the CPU. If the row scroll registers are prevented from reading, Combat School boots up with an error on "zure RAM", note that "zure" is Japanese for scroll.

Attribute byte

There are 8 programmable registers, most of them are 8-bit long, some have unused bits which do not connect to any physical register. Register cannot be read back.

The jotego nickname had already been used by other people so on some networks you will find me as topapate.

Contact via:

• https://twitter.com/topapate
• https://github.com/jotego

You can show your appreciation through

• Github:
• Patreon: https://patreon.com/jotego
• Paypal: https://paypal.me/topapate

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