SPICARD Registers

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Registers[edit]

Old3DS Name Address Width Used by
Yes REG_SPICARDCNT 0x1000D800 4
Yes REG_SPICARDASSERT 0x1000D804 4
Yes REG_SPICARDSIZE 0x1000D808 4
Yes REG_SPICARDFIFO 0x1000D80C 4
Yes REG_SPICARDFIFOSTAT 0x1000D810 4
Yes  ? 0x1000D814 4
Yes  ? 0x1000D818 4
Yes  ? 0x1000D81C 4

REG_SPICARDCNT[edit]

BIT DESCRIPTION
5-0 Baud Rate
12 Bus Mode
13 Transfer Mode (0 = read, 1 = write)
15 Trigger (0 = idle, 1 = busy)

REG_SPICARDASSERT[edit]

When deasserting the card, this registers is set to 0. Presumably contains 1 when the card is asserted.

REG_SPICARDSIZE[edit]

BIT DESCRIPTION
31-0 Transfer size

REG_SPICARDFIFO[edit]

BIT DESCRIPTION
31-0 Data

REG_SPICARDFIFOSTAT[edit]

BIT DESCRIPTION
0 FIFO Full (0 = not full, 1 = full)