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Differentiate between protected and real modes of an Intel microprocessor
Operation of Real mode interrupt: When microprocessor completes executing the current instruction, it determines whether an interrupt is active by checking (1) instruction execution, (2) single -step (3) NMI (4) co-processor segment overrun (5) INTR and (6) INT instruction in the order presented. If one ormore of these interrupt conditions are present, following sequence of events takes place:
1. The contents of flag register are pushed onto the stack
2. Both the trap (TF) and interrupt (IF) flags are cleared. This disables INTR pin and trap or single-step feature.
3. Contents of the code segment register (CS) are pushed onto the stack.
4. Contents of the instruction pointer (IP) are pushed onto the stack.
5. The interrupt vector contents are fetched and then placed into both CS and IP so that next instruction executes at the interrupt service procedure addressed by the vector.
Illustrate the term Extranet? Extranet: Extranet is Extension of an Intranet that makes thelatter accessible to outside companies or individuals with or without an intran
In a DTMF phone, digits are represented by: (A) Orthogonal frequencies. (B) Orthogonal Phases. (C) Orthogonal codes. (D) Orthogonal pulses. Ans: Di
is data bus is bidirectional
Is it possible to pass data to and from include programs explicitly? No. If it is needed to pass data to and from modules it is needed to use subroutines or function modules.
What is difference between hold time and setup? The interviewer was looking for one exact reason, and it’s really a good answer as well..The hint is hold time doesn't depend onto c
What are the drill-down features provided by ABAP/4 in interactive lists? ABAP/4 gives some interactive events on lists such as AT LINE-SELECTION (double click) or AT USER-COM
what is multimedia and what is its importance
real world applications
Conjunctive Normal Forms: However there for the resolution rule to resolve two sentences so they must both be in a normalised format called as conjunctive normal form, that is
Q. Explain about Integration Levels? Initially only few gates were integrated consistently on a chip. This initial integration was termed as small-scale integration (SSI). With
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