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An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.
When a user is logging on to Windows, the startup sound is played, the shell (usually EXPLORER.EXE) is loaded from the [boot] section of the SYSTEM.INI file, and startup items are loaded. In all versions of Windows 9x except ME, it is also possible to load Windows by booting to a DOS prompt and typing "win".
A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. [ 1 ] POST processes may set the initial state of the device from firmware and detect if any hardware components are non-functional.
Thai language support was added, while video playback was improved. Adapter charging and startup time were quickened. [10] The prior version, [11] 1.20.02, was released on December 19, 2007. Transferring content via the SD card slot is enabled, though only image files are viewable. [9] Firmware version 1.21.01 was released on February 28, 2008.
The ZEN MicroPhoto, released on July 28, 2005, [15] shares the same features of the ZEN Micro except Audible.com support (reinstated in firmware versions 1.31.01 and above), and adds an upgraded 262,144-color (18 bpp) OLED screen for displaying photos. To fix the lack of bass with the ZEN Micro, Creative implemented a Bass Boost feature ...
Open Firmware is a standard defining the interfaces of a computer firmware system, formerly endorsed by the Institute of Electrical and Electronics Engineers (IEEE). It originated at Sun Microsystems where it was known as OpenBoot , and has been used by multiple vendors including Sun , Apple , [ 1 ] IBM and ARM .
The architecture of the rootkit safeguard can also prevent the system from running the user's own software changes, which makes UEFI controversial as a legacy BIOS replacement in the open hardware community. Also, Windows 11 requires UEFI to boot, [87] with the exception of IoT Enterprise editions of Windows 11. [10]
Windows 8 finally introduced further optimizations for UEFI systems, including Graphics Output Protocol (GOP) support, [131] a faster startup, 32-bit UEFI support, and Secure Boot support. [132] [133] Since Windows 8, the UEFI firmware with ACPI protocol is a mandatory