This software was made for users SpartaDOS X and disk drives TOMS: Turbo Drive, Multi Drive, TOMS 710 and 720, and all other drives working in Ultra Speed (compatible with function "U" in QMEG-OS). Sparta DOS has some troubles with these disk drives (in "high speed" mode). TOMS.SYS is driver, which can be loaded by CONFIG.SYS. It recognizes frequency for "high speed" transfer and sets drive to Ultra Speed mode.