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Korean Master System: IC BD M4K MAIN 837-7074
Found in the Samsung Gam-Boy, this board is very similar to the one in the Japanese Master System, but lacks the YM2413 and uses a unique I/O controller, which is a 64-pin SMD chip. It also uses the same v2.1 BIOS like the Japanese Master System, right down to having Japanese text and the Space Harrier theme (albeit without the FM portion).
- CPU
- Goldstar Z8400A PS or Zilog Z0840004PSC
- I/O Controller
- Sega 315-5363
- RAM
- NEC D4168C
- VDP
- Sega 315-5124
- VRAM
- 2x NEC D4168C
- Video Encoder
- Unknown (presumably a Sony CXA1145)
- BIOS
- Sega MPR-11124 (Japanese BIOS v2.1)
Photo by Korean Video Game Museum
