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3.11
SM520PC Manual V1.1
The Special Function Interface (SFI)
All functions are performed by starting the SW-interrupt 15h with the following arguments:
THIS FUNCTION IST NOT IMPLEMENTED IN THE ACTUAL BIOS REVISION !
3.11.1 INT 15h SFR Functions
Function:
Number:
WRITE TO EEPROM
E0h
Description:
Writes the Data byte into the addressed User-Memory-Cell from the serial
EEPROM. The old value is automatically deleted.
Input Values:
AH = E0h
Function Request
AL
Databyte to store
BX
Address in the EEPROM (0-1024 Possible)
SI
1234h User-Password (otherwise EEP is writeprotected)
DLAG-Password for access to the DLAG-Memory-Cells
Output Values:
None, all registers are preserved.
Function:
Number:
READ FROM EEPROM
E1h
Description:
EEPROM.
Reads the Data byte from the addressed User-Memory-Cell of the serial
Input Values:
AH = E1h
Function Request
BX
Address in the EEPROM
(0-1024 Possible)
SI
1234h User-Password
DLAG-Password for access to the DLAG-Memory-Cells
Output Values:
AL
Function:
Number:
WRITE SERIALNUMBER
E2h
Description:
Writes the Serialnumber from the serial EEPROM into the addressed DLAGMemory-Cell. The old value is automatically deleted.
Input Values:
AH = E2h
Function Request
DX,CX,BX
Serialnumber (Binary, not Ascii)
SI
Password
Output Values:
None, all registers are preserved.
read databyte
60