セガ・マスターシステムで「グラディウス（MSX版）」を動かしてみた

■I created a "general-purpose tool to convert MSX ROM images into Master System ROM images," then burned the Master System ROM image created with that tool onto an EP-ROM and made a cartridge. ■I created the minimum BIOS routines that are often used in games and placed them at the same address as MSX. I also created my own built-in font. ■The screen mode used during the game is SG-1000 mode (compatible with MSX) rather than Master System-only mode. The palette is dark because of the compatibility mode specifications. ■All sounds are FM sound sources. Data that would be sent to the PSG registers is converted in real time by a program and sent to OPLL. ■The video and audio were captured from an actual Master System machine. Sorry if it's noisy.