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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.
What are the Features of CISC Processors The standard features of CISC processors are listed below: CISC chips have a large amount of dissimilar and complex instructions.
The linkage section is part of a known as program that 'links' or maps to data items in the calling program are working storage. It is the part of the called program where these sh
Six machines H1, H2, ..., H6 are linked by two Ethernet switches SW1 and SW2 as given below. Both switches have four ports drawn. The port numbers are as indicated. Suppose the two
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Rational RequisitePro is a needed management tool that helps project teams control the development process. RequisitePro organizes your requirements by linking Microsoft Word to a
Q. What are the values of x, y, and z. (1011.001101)2 = (x)10 = (y)8 = (z)16 Q. What are the various ways to represent Negative Numbers in the Computer system?
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What Component of LoadRunner would you use to play Back the script in multi user mode? Ans) The Controller component is used to playback the script in multi-user mode. This is c
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Define the Operating Characteristics for master-slave S-R flip-flop? 1. Propagation Delay Time - is the interval of time required subsequent to an input signal has been applied
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