Nintendo 1504166 Programming Manual - Page 143
When FIFO is Used, Example: Writing Data Registers
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AGB Programming Manual Communication Functions When FIFO is Used If written to a data register SIODATA8, data is written to a send FIFO. If all the contents of the send shift register are shifted out, data is transferred from a send FIFO to a shift register, immediately. Please note when using this operation, that data is immediately transferred to a shift register when the first data is written to the data register, and the interrupt request condition is met as a send FIFO becomes empty. Also, when read, data is read from a receive FIFO. (Only the lower 8 bits are valid.) Example: Writing Data Registers ©1999 - 2001 Nintendo of America Inc. 143 D.C.N. AGB-06-0001-002B4
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AGB Programming Manual
Communication Functions
©1999 - 2001 Nintendo of America Inc.
143
D.C.N. AGB-06-0001-002B4
When FIFO is Used
If written to a data register SIODATA8, data is written to a send FIFO.
If all the
contents of the send shift register are shifted out, data is transferred from a send FIFO
to a shift register, immediately.
Please note when using this operation, that data is immediately transferred to a shift
register when the first data is written to the data register, and the interrupt request
condition is met as a send FIFO becomes empty.
Also, when read, data is read from
a receive FIFO.
(Only the lower 8 bits are valid.)
Example: Writing Data Registers