Specifications

smartCore Express SMA200 BIOS / The Special Function Interface (SFI)
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5 The Special Function Interface (SFI)
All functions are performed by starting the SW Interrupt 15hex with the following arguments:
5.1 INT15h SFR Functions
Function WRITE TO EEPROM
Number E0h
Description
Writes the data byte into the addressed User-Memory-Cell from the serial EEPROM. The old
value is automatically deleted.
AH 78h DLAG Int15 function
AL E0h Function request
BX Address in the EEPROM (0-1024 possible)
CL Data byte to store
Input values
SI 1234h User-Password (otherwise EEP is write-protected)
Output value None, all registers are restored when reopened.
Function READ FROM EEPROM
Number E1h
Description Reads the data byte into the addressed User-Memory-Cell of the serial EEPROM.
AH 78h DLAG Int15 function
AL E1h Function request
BX Address in the EEPROM (0-1024 possible)
Input values
SI 1234h User-Password (DLAG-Password for access to the DLAG-Memory-Cells)
Output value AL Data byte
Function WRITE SERIAL NUMBER
Number E2h
Description
Writes the serial number from the serial EEPROM into the addressed DLAG-Memory-Cell.
The old value is automatically deleted.
AH 78h DLAG Int15 function
AL E2h Function request
BX,
CX,
DX
Serial number
Input values
SI Password
Output value None, all registers are restored when reopened.
Function READ SERIAL NUMBER
Number E3h
Description Reads the serial number from the board into the serial EEPROM.
AH 78h DLAG Int15 function
Input values
AL E3h Function request
Output values
BX,
CX,
DX
Serial number (binary, not ASCI)