INT 13 - ScanBoot - INSTALLATION CHECK AX = 5342h ("SB") CX = 0001h DX = 0000h Return: CF clear if ScanBoot installed AX = 0000h CX = serial number ("SW" if shareware release) DX = version BX,SI,ES destroyed Program: ScanBoot is a virus-detection TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. by PanSoft