INT 21 - WDTSR.COM - INSTALLATION CHECK
AH = 2Bh
CX = 6269h ('bi')
DX = 742Dh ('t-')
Return: AL = FFh if not installed
AL = 77h ('w') if WDTSR is installed
CX = 6174h ('at')
DX = 6368h ('ch')
ES = resident code segment
ES:DI -> identification and configuration data
Program: WDTSR is a driver for the bitWatch watchdog hardware by bit-design
GmbH
SeeAlso: AH=2Bh/CX=6269h"bitFOSSI",INT 14/AH=14h"FOSSIL",INT 15/AH=C3h