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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.
In order to suppress the leading zeroes of a number field the which keywords is used ? NO-ZERO.
Define the Pulse-Triggered (Master-Slave) Flip-flops? The term pulse-triggered signify that data are entered into the flip-flop on the rising edge of the clock pulse, though th
2. Explain any ten CASE tools
Multi-Layer Artificial Neural Networks - Artificial intelligence: Now we can look at more sophisticated ANNs, which are known multi-layer artificial neural networks because the
Explain Protection mechanism. Protection mechanism: The subsequent mechanisms are commonly utilized for protecting files having programs and data. (a) Access controls list
1. (a) Given a baseband bus with station 1 located at 10m, station 2 located at 1000m, and station 3 located at 1010 meters (see diagram above). If the data rate of the bus is 10 M
What is arithmetic pipeline? Pipeline arithmetic units are usually found in very high speed computers. They are used to execute floating point operations, multiplication of fi
#quinhydrone
What is MASK OPERATION The mask operation is similar to selective-clear operation except which the bits of Aare cleared only where there are corresponding 0's in register B. th
How does VB.NET/C# achieve polymorphism? VB.Net / C# provide polymorphism through the following mechanisms: 1. Inheritance - base class gives overridable methods which ar
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