Nintendo 1504166 Programming Manual - Page 24
Game Pak Bus, Game Pak ROM Access
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AGB Programming Manual AGB Memory 3.3.2 Game Pak Bus The Game Pak bus has a total of 32 terminals, which are described in the following table. No. Game Pak ROM Access Terminal Use Game Pak RAM Access Terminal Use 1 VDD(3.3V) VDD(3.3V) 2 PHI PHI 3 /WR Write Flag /WR Write Flag 4 /RD Read Flag /RD Read Flag 5 /CS ROM Chip Selection /CS 6 AD0 A0 7 AD1 A1 8 AD2 A2 9 AD3 A3 10 AD4 A4 11 AD5 A5 12 AD6 A6 13 AD7 Terminals used for both address(lower) A7 14 AD8 and data A8 15 AD9 A9 Address 16 AD10 A10 17 AD11 A11 18 AD12 A12 19 AD13 A13 20 AD14 A14 21 AD15 A15 22 A16 D0 23 A17 D1 24 A18 D2 25 A19 26 A20 Address(upper) D3 D4 Data 27 A21 D5 28 A22 D6 29 A23 D7 30 /CS2 /CS2 RAM Chip Selection 31 IREQ and DREQ Terminal used for IREQ IREQ and and DREQ DREQ Terminal used for IREQ and DREQ 32 GND GND ©1999 - 2001 Nintendo of America Inc. 24 D.C.N. AGB-06-0001-002B4