INT 10 - Chips & Technologies Extended 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. - AUTO EMULATION CONTROL AX = 5F02h BL = new state of autmatic emulation (00h enabled, 01h disabled) Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F01h,AX=5F03h
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 CLOCK AX = 5F02h BH = what to set 02h dot clock BL = speed in MHz (12-99) 03h memory clock BL = speed in MHz (12-99) FFh default dot and memory clocks Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F00h"Chips",AX=5F03h"64300",AX=5F02h"65530"
INT 10 - Chips & Technologies '65530' 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 CLOCK AX = 5F02h BH = what to set 02h dot clock BL = new clock speed (see #00180) 03h memory clock BL = new clock speed (see #00180) 04h set power-down register BL = new value for power-down register (bits 3-0 only) 06h (404 clock chip) set control register BL = new vlaue for control register (bits 5-0 only) 06h (404A/B/B-ES clock chips) set control register PWRDN1 BL = new value for control register 07h (404A/B/B-ES clock chips) set control register PWRDN1 BL = new value for control register FFh default dot and memory clocks Return: AL = 5Fh if function supported AH = status 00h unsuccessful 01h successful SeeAlso: AX=5F01h,AX=5F02h"64300",AX=5FA0h,#00184 (Table 00180) Values for C&T '65530' 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. clock speed: 00h 12 MHz 01h 14 MHz 02h 16 MHz 03h 18 MHz 04h 20 MHz 05h 25 MHz 06h 28 MHz 07h 32 MHz 08h 36 MHz 09h 40 MHz 0Ah 45 MHz 0Bh 50 MHz 0Ch 56 MHz 0Dh 60 MHz 0Eh 65 MHz 0Fh 66 MHz 15h 34 MHz
INT 10 - VIDEO - Realtek RTVGA - RETURN RTVGA ON-BOARD MEMORY SIZE AX = 5F02h Return: AH = 00h, if successful AL = on-board memory size (00h = 256K, 01h = 512K, 02h = 768K, 03h = 1024K) BUG: in v3.C10, AX=5F02h on return due to improper stack restoration code SeeAlso: AX=5F01h"RTVGA",AX=5F03h"RTVGA"