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In a raw Itanium, a "Processor Abstraction Layer" (PAL) is integrated into the system. When it is booted the PAL is loaded into the CPU and gives a low-level interface that abstracts some instructions and gives a mechanism for processor updates distributed via a BIOS update.
During BIOS initialization an additional layer of code, the "System Abstraction Layer" (SAL) is loaded that gives a uniform API for execution-specific platform functions.
On top of the PAL/SAL interface sits the "Extensible Firmware Interface" (EFI). EFI is not part of the IA-64 architecture but by convention it is needed on all IA-64 systems. It is a easy API for access to logical aspects of the system (display, storage, keyboard, etc) combined with a lightweight runtime environment (same to DOS) that allows basic system administration tasks such as configuring storage adapters, flashing BIOS and running an OS boot-loader.
Once the OS has been booted, some aspects of the PAL/SAL/EFI stack remain resident in memory and can be accessed by the OS to perform low-level tasks that are implementation-dependent on the underlying hardware.
The NAND gate. The NAND gate is equivalent to an AND gate followed by a NOT gate so that the output is 0 when all of the inputs are high, otherwise the output is 1. There may
Show how finite state machine model helps in designing a switching system and give a typical example. Switching system fundamentally belongs to the class of finite state machi
Simplify the given expressions using Boolean postulates XY + X‾Z‾ + XY‾Z (XY + Z) Ans. XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾ + XY‾Z (XY + Z) = XY + X‾Z‾ + XXYY‾Z
LoadRunner works by making virtual users who take the place of real users operating client software, such as sending requests using the HTTP protocol to IIS or Apache web servers.
A) Change the following formulas from reverse Polish to infix: a) AB +C + D x b) ABCDE + x x / B) Change the following formulas from infix to
What are the different types of parameters? Formal Parameters: Parameters, which are described during the definition of subroutine with the FORM statement.
Explain Anonymous FTP. Use of a login password and name helps maintain file secure from unauthorized access. Though, sometimes these authorizations can also be inconvenient.
Functions carried out by different operating systems The below is a list of functions carried out by different operating systems: - Provides a user interface - Device man
INFORMATION DISTRIBUTION: The organization and management of any institution, be it an isolated lab or a large site with many labs, requires that information is managed. Methods o
Address translation: Compiler time : If it is known in advance that a program will reside at a particular location of primary memory, and then the compiler can be told to
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