INT 10 - TSRUNIT v1.10 - INSTALLATION CHECK AX = DAADh BX = check signature (different for each 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.) CX = 0000h Return: CX = return signature (nonzero) if installed ES = program segment prefix Program: TSRUNIT is a Turbo Pascal unit for creating TSRs by Nir Sofer