From Sega Retro
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Masami Ishikawa (石川 雅美) joined Sega in 1979 as part of the amusement machine division. He then became leader of the company's home console R&D division in the mid-1980s, fronting all major Sega consoles until the early 1990s when he returned to what had become Sega AM4.
- Othello Multivision (1983)
- Pioneer TV Video Game Pack SD-G5 (1983)
- SG-1000 II (1984)
- Sega Mark III (1985) — Team Leader
- Sega Master System (1986) — Team Leader
- Sega Mega Drive (1988) — Team Leader
- Sega Teradrive (1991) — Team Leader
- Sega Hikaru (1999)