INT 15 - Juko UNIQUE UX BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - TURBO MODE CONTROL AH = DFh AL = function 00h turn on Turbo mode 01h turn off Turbo mode 02h set Turbo mode according to hardware switch SeeAlso: INT 13/AX=FFFFh