The Schematics of Europian - Japanese Master System connector & MasterSystem - GameGear converter by Sankichi<3-kichi@geocities.co.jp> based on "MASTER SYSTEM/GAME GEAR PINOUTS" by Richard Aplin Europian MS A5(3-3) Gnd A11(3-39) | A3(3-5) | D3(3-21)| A8(3-42) M17=3-21 Reset A15(3-35)| A1(3-7) | D5(M-19)| A14(3-36) |(3-26) | | | | D0(3-18)| D7(M-21)| Rd*(3-34) M21=3-23 | | A7(3-1) | D2(3-20)| A10(3-40) Wr*(3-31) | | | | | | | | | | | | | | | | | | 50 _ _(x)_ _ _ _ x _ x x x x x x x x x x x x x x x x 2 (17) A4(3-4) GND A9(3-41) | A2(3-6) | D4(M-18)| A13(3-37) M18=3-22 +5 | | A0(3-8) | D6(M-20)| | A12(3-38) D1(3-19)| CrtOe(3-33) | | A6(3-2) | GND | | | | | +5 | | | | | | | | | | | | | | | 49 _ _ _ _ _ _ _ x x x x x x x x-x x x x _ x x _ _ x 1 (15) 3 Mreq Japanese MS A15(3-35) Wr(M-3) A14(3-36) +5 Rd(3-34) | | GND | | | CrtOe(M-22) | | | B1 x=x(x)_ x x _ _ _ x _ _ _ _ _ _ _ x x _ x=x B22 D3(M-17) A12(M-4) A7(3-1) A2(3-6) M17=3-21 D4(M-18) A13(M-28) A8(3-42) A3(3-5) M18=3-22 D5(M-19) D0(M-13) A9(3-41) A4(3-4) D6(M-20) D1(M-14) A10(M-23) A5(3-3) A0(M-12) D7(M-21)| D2(M-15)| A11(M-25) A6(3-2) | A1(M-11) M21=3-23 | | | | | | | | | | | | | | | | | | | | | | A22x x x x x x x x x x x x x x x x x x x x x x A1 GameGear Edge Connector A2 D4 A9 (CLK) A4| GND A15 (*REFRESH) A6| | GND | (*RD)| (*M1)| A12 | | D1| | | *MREQ | (??) | | (??) +5| | | | A0| | | | D6| | | | A13 | | | GGVIDEO | | | | | | | | | | | | | | | | | | | | | | 2 x x x x x x x x-x x x x(x)x x x(x x x x)x(x)44 12 22 32 42 *MREQ connected to SMS CrtOe. A3 D3 A11 (*RESET) A5| GND (*CrtOe) (*IOREQ) A7| | D2| | A10 | +5| | (??) *WR | | D0| | | D7| | | A14 | | +5| (??) | | | A1| | | | D5| | | | A8| | | | GND | | | | | | | | | | | | | | | | | | | | | | | | 1(x)x x x x x x x x x x x x(x)x x x x(x x)x x(x)45 11 21 31 41