Int 10 Fn DAAD  - Tsrunit V1.10 - Installation Check                       [t]

   AX = DAADh
   BX = check signature (different for each TSR)
   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