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AX = 2C00h
CX = 534Bh ('SK')
DX = 5544h ('UD')
BX = 4F21h ('O!')
Return:
AX = 5349h ('SI') if installed
CH = version number
CL = subversion
Program: SKUDO is an antivirus TSR by Jordi Mas
Category: Virus/Antivirus - Int 21h - S

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