INT 2F - FreeDOS - FDAK-DDT - INSTALLATION CHECK / STATUS CHECK AX = 12FFh BL = 00h Return: AL = DDh if installed BH = state (00h disabled, nonzero enabled) BL = readonly flag (00h writable, nonzero read-only) Program: FDAK-DDT is the FreeDOS Alternative Kernel Device Drivers Testing release by Yury A. Semenov SeeAlso: AX=12FFh/BL=07h