Nintendo 1504166 Programming Manual - Page 129
bit Normal Serial Communication Data Register
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AGB Programming Manual Communication Functions 8 bit Normal Serial Communication Data Register 8-bit transfer mode uses SIODATA8 as a data register. The upper 8-bits will become disabled. (This data register is used for 16 bit multi-play communication as well.) Address Register 12Ah SIODATA8 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Attributes Initial Value R/W 0000h 32-bit Normal Serial Communication Data Register 32-bit transfer mode uses [120h:SIODATA32_L] and [122h:SIODATA32_H] as data registers.(These data registers are used for 16-bit multi-player communication also.) The most significant bit will be d15 in the register SIODATA32_H, and the least significant bit will be d0 in the register SIODATA32_L. Address 120h Register SIODATA 32_L 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 Attributes Initial Value Data 0 R/W 0000h Address 122h Register SIODATA 32_H 15 14 13 12 11 10 09 08 07 Data 1 06 05 04 03 02 01 00 Attributes R/W Initial Value 0000h ©1999 - 2001 Nintendo of America Inc. 129 D.C.N. AGB-06-0001-002B4