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. - GET REFRESH RATE AX = 5F04h BL = video mode number Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful BH = available refresh rates (see #00182) BL = currently-set refresh rate (see #00182) SeeAlso: AX=5F03h"64300",AX=5F05h"64300" Bitfields for C&T 64300 refresh rates: Bit(s) Description (Table 00182) 5 75 Hz 4 72 Hz 3 70 Hz 2 60 Hz 1 56 Hz 0 interlaced