shutdown.asm

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;===== Connect to APM Driver  =====
MOV AX,5301                 
XOR BX,BX
INT 15
;===== Read APM Driver Verson =====
MOV AX, 5300
XOR BX, BX
INT 15
PUSH AX
;===== Set Driver version =====
MOV AX,530E
XOR BX, BX
POP CX
INT 15
;===== Power Off the Computer  =====
MOV AX,5307                 ;Set Power State
MOV BL,01                     ;All Device
MOV CX,0003                 ;Power Off 
INT 15
;===== if failed return to DOS =====
INT 20