plasticbugs.masterw - 0.1.2

plasticbugs Sep 19, 2026

Master of Weapon Taito, 1989

A vertically scrolling shooter on Taito’s B System board, reimplemented in gateware: the 68000, the Z80 sound board with its YM2203, and the TC0180VCU that draws the two tilemaps, the text layer and the sprites.

ROMs are not included. Build the image from your own MAME masterw romset with the builder in the release, and put masterw.rom in Assets/masterw/common/.

The video was written against MAME and is pixel-identical to it on every frame the frozen-state bench checks, the title screen included, where the signature is drawn by a framebuffer the chip never clears.

Controls

• A / Y shot
• B / X bomb
• Select insert coin
• Start start

The core menu carries both DIP banks, the screen shape, scanlines and a shadow mask.