The NXP MQX File System (MFS) is an embedded FAT file system compatible with Microsoft Windows and MS-DOS file systems. It can format, read, write and exchange files with any operating systems running a FAT-12, FAT-16 or FAT-32 files system. It is fully re-entrant and uses the NXP MQX RTOS file device driver to access disk devices. Also, included with the NXP MQX RTOS is a Trivial File System (TFS) that can be used in HTTP applications requiring a simple read-only file system. MFS is integrated with the FTP server of the NXP Real-Time TCP/IP Communication Suite (RTCS) and the Mass Storage Class Driver of the USB Host Stack.