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When can a user program execution be interrupted?
It won't be desirable to interrupt a program when an instruction is being executed and is in a state such as instruction decode. The most desirable place for program interruption will be when it has completed the prior instruction and is about to begin a new instruction. Figure below shows instruction execution cycle with interrupt cycle where interrupt situation is acknowledged. Please remember that even interrupt service routine is also a program and after recognizing interrupt next instruction executed by instruction cycle is first instruction of ISR (interrupt servicing routine).
Define dynamic loading. To get better memory-space utilization dynamic loading is used. With dynamic loading, a routine is not loaded unless it is called. All routines are kept
Q. Illustrate Header section of a device driver? Header comprises information which allows DOS to identify the driver. It also comprises pointers which allow it to chain to ot
What are assembler directives? Ans: These are the instructions that direct the program to be executed. They have no binary corresponding so they are called pseudo-opcodes. The
compare 2g , 3g , and 4g also with advantage of 3g and 4g.
Real time clock A real-time clock keeps the time in real time - i.e. in hours and minutes. Software for the real-time clock comprises an interrupt service procedure which is c
Sometimes you may need to run scripts which have plotting commands without displaying the plots and without going into the script to comment out the commands. An example: if you're
Hyper-threading works by duplicating those sections of processor that kept the architectural state-but not duplicates the main implementation resources. This allows a Hyper-threadi
History of Information Technology and Organisations The increasing sophistication in information systems and the growth in their use have been influenced by three main factors
Define Electronic Data Interchange. An EDI stand for Electronic Data Interchange is used by organizations for transactions which occur on regular basis to a pre-determined for
How a Java program compiles? First source file name should be extended with .java extension. For example Myprog.java Execute javac compiler. javac compiler creates
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