INT 2F C - NETWORK REDIRECTOR - INSTALLATION CHECK AX = 1100h Return: AL = status 00h not installed, OK to install 01h not installed, not OK to install FFh installed AH = product identifier (ad hoc by various manufacturers) 00h if PCIBM PC Tools v8 DRIVEMAP 42h ('B') for Beame&Whiteside BWNFS v3.0a 6Eh ('n') for NetWare Lite v1.1 CLIENT Notes: this function is called by the DOS 3.1+ kernel in DOS 4.x only, the 11xx calls are all in IFSFUNC.EXE, not in the PCIBM PC LAN Program redirector; DOS 5+ moves the calls back into the redirector the PCIBM PC Network 1.00 redirector (renamed to PCIBM PC LAN Program in 1.1-1.3) only supports AL=00h-27h