Aaeon AEC-6821, Manual

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E m b e d d e d C o n t r o l l e r A E C - 6 8 2 1
Appendix A Programming the Watchdog Timer
A-8
RET
Exit_Configuration_Mode ENDP
Check_Chip PROC NEAR
MOV AL,20h
CALL Read_Configuration_Data
CMP AL,87h
JNE Not_Initial
MOV AL,21h
CALL Read_Configuration_Data
CMP AL,12h
JNE Not_Initial
Need_Initial:
STC
RET
Not_Initial:
CLC
RET
Check_Chip ENDP
Read_Configuration_Data PROC NEAR
MOV DX,WORD PTR CS:[C04h]
OUT DX,AL