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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.
Describe the types of flip-flops and latches. Flip-flops are of two types as illustrated below: a. Positive edge triggered b. negative edge triggered Latches are
Q. Define Colspan and Rowspan? Now let's see how to work with COLSPAN (Column Span) and ROWSPAN (Row Span). If we want cell containing Ajay in Figure to be extended to the next
Determine the Example of timescale 'timescale 10ns / 1ps Indicates delays are in 10 nanosecond units with 3 decimal points of precision (1 ps is 1/1000ns which is .001 ns).
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List the major components of the keyboard/Display interface. a. Keyboard section b. CPU interface section c. Display section d. Scan section
1. Introduction to Software Metrics in Software Engineering.? 2. Role of direct and indirect measures in software process management? 3. Stance taken and justification? 4. Conclusi
How address resolution is performed with table lookup? Explain with the help of a suitable example. The approach of table lookup to address resolution needs a data structure wh
When your shell is waiting for input from the user, it should first print a prompt. The prompt should consist of the current working directory followed by the _>_ character. Here i
what is software engineering?
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