INT 13,16 - Change of Disk Status (XT BIOS from 1/10/86 & newer)

AH = 16h

DL = drive number (0=A:, 1=2nd floppy, 80h=drive 0, 81h=drive 1)

on return:

AH = 00 no disk change

= 01 disk changed

CF = set if disk has been removed or an error occurred

- used to detect if a disk change has occurred

- see ~INT 13,STATUS~ ~INT 13,15~