Category: serial I/O
INT 21 - bitFOSS - INSTALLATION CHECK AH = 2Bh CX = 6269h ('bi') DX = 7446h ('tF') Return: AL = FFh if not installed AL = 4Fh ('O') if bitFOSS is installed CX = 5353h ('SS') DX = 494Ch ('IL') ES = resident code segment ES:DI -> identification data Program: bitFOSS is a revision 5 FOSSIL driver SeeAlso: AH=2Bh/CX=6269h"bitFOSSI",INT 11/AH=BCh