The MBR takes control of the boot process from the sytem bios.
The BIOS was used to control the settings for power managemenet
ICH (Input/Output Control Hub
A bootloader is what loads the kernel into RAM and transfers control to it from the BIOS.
Boot block (4K,8L,16K,32K,64K128K) is portion of code in the complete BIOS(1MB5MB). who's responsibility is validate the main BIOS and transferring the control to main BIOS (checks whether BIOS corrupted or not and some other properties).
The ROM chips control the startup of the computer..
When the computer is first turned on, (or booted), the BIOS program is in control. After performing a few system checks, the BIOS program turns the computer over to an operating system like Windows XP.
phoenix bios,ami bios, luwrance bios, award bios,asus bios
AMI Bios, Award Bios, Pheonix Bios
To control whole console or p.c., and to establish communication between user and computer.
H2 bios is a type of bios specifically made for notebooks.
BIOS is a set of boot programs stored on a non-volatile ROM on the motherboard which is different for every system configuration. That would simply mean that unlike other programs it has direct hardware control.