plasticbugs.moomesa - 0.2.0

plasticbugs Sep 25, 2026

Wild West C.O.W.-Boys of Moo Mesa Konami, 1992 (GX151)

The whole board is in the gateware: 68000, Z80, YM2151 and K054539 in stereo, and the Konami tilemap, sprite and mixer chips, checked pixel for pixel against MAME.

ROMs are not included. Build the image from your own MAME moomesa romset with mra_build.py and moomesa.mra, and copy it to Assets/moomesa/common/moomesa.rom

• B / X shoot
• A / Y jump
• Select coin, Start start
• Settings (difficulty, lives) are in the game’s own service menu (Service Switch in the core menu); they are saved on the SD card.

Not modelled: flip screen. If it is set in the service menu the backgrounds disappear; set it back to off.

Credits: MAME’s moo.cpp (R. Belmont, Acho A. Tang, after Olivier Galibert) and its Konami device models; fx68k (Jorge Cwik); tv80 (Guy Hutchison); jt51 and jt5911 (Jose Tejada); the Pocket platform and build (Marcus Andrade, OpenGateware).