Category: serial I/O
INT 21 - bitFOSSI - INSTALLATION CHECK AH = 2Bh CX = 6269h ('bi') DX = 7449h ('tI') Return: AL = FFh if not installed AL = 53h ('S') if bitFOSSI is installed CX = 444Eh ('DN') DX = 2D46h ('-F') ES = resident code segment ES:DI -> identification data Program: bitFOSSI is a revision 5 FOSSIL driver for ???'s ISDN board SeeAlso: AH=2Bh/CX=6269h"bitFOSS",INT 11/AH=BCh