SPICARD Registers

Registers

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

BIT	DESCRIPTION
2-0	Baud Rate
6-7	Unused device select.
12	Bus Mode
13	Transfer Mode (0 = read, 1 = write)
15	Trigger (0 = idle, 1 = busy)

This register seems to have a bug where the lower 8 bits are shifted up by 16 when reading them back.

REG_SPICARDASSERT

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

REG_SPICARDSIZE

BIT	DESCRIPTION
31-0	Transfer size

REG_SPICARDFIFO

BIT	DESCRIPTION
31-0	Data

REG_SPICARDFIFOSTAT

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