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SD

SD . bios.bin c ( 12 ), SD PC . . SPIReg /WR , "0" . "" BUSY. , BUSY . 8 CLK, MOSI MISO. 8 . BUSY .

SPIReg. . "" SPI (312,5 ), (2,5 ). Divider.

:
D0 - "0" - "1" - ;
D1 - ("0" - 312,5 "1" - 2,5 );
D6 - "0" - "1" - ;
D7 - "0" - "1" - .

:
D0 - "0" - "1" - ;
D1 - ("0" - 312,5 "1" - 2,5 );
D2 - "1" - - Operate - ;
D3 - "1" - - Insert - .

SD . EPM7064SLC44. "" . .

SPI
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