SD Card ======= SD card with SPI protocol. Registers --------- ============== ============= Register Address ============== ============= SD_CARD_DATA BASE_IO + 16 SD_CARD_STATUS BASE_IO + 20 ============== ============= SD_CARD_DATA ^^^^^^^^^^^^ Read: ====== ============================ Field Description ====== ============================ [7:0] Byte ====== ============================ Write: ====== ============================ Field Description ====== ============================ [7:0] Byte ====== ============================ SD_CARD_STATUS ^^^^^^^^^^^^^^ Read: ===== ============================ Field Description ===== ============================ [0] Ready? ===== ============================ Write: ===== ============================ Field Description ===== ============================ [0] Slave select [2] Fast ===== ============================