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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).
Q. Explain Real time system? A real time system defines an interactive processing system with severe time limitations. A real-time system is used whenever there are rigid time
Determine about the raster-scan systems Most of the present raster-scan systems contain a separate processor called as display processor. This processor performs graphics func
What will exactly the hide statement do? For displaying the details on secondary lists needs that you have previously stored the contents of the selected line from within the
Describe Data structures used during passes of assembler and their use. During passes of assembler, the Data structures define as: Pass 1 data base Input source pro
Device Drivers in UNIX, MS-DOS and Windows System Though device drivers are in effect add-on modules they are however considered to be part of system because they are closely i
a. Explain the meaning of frame buffer? Draw a block diagram showing the method for scanning out an image from frame buffer to display surface. b. Explain the structure of plasm
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Communications Parallel tasks normally have to exchange data. There are various manners in which this can be achieved like over a network or through a shared memory bus. The
What is macro call? Explain. Macro call: While a macro name is used along with a set of actual parameters this is replaced through a code generated from its body. Such code
Specifying the Problem: Now next here furtherly we now use to look at how you mentally constructed your decision tree where deciding what to do at the weekend. But if one way
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