INT 10 - Chips & Technologies '64300' 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. - SET REFRESH RATE AX = 5F05h BL = video mode number BH = refresh rate to set (see #00182) bit 7: =0 program new clock and CRT parametes =1 keep current parameters Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F04h"64300"