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Q. Define Stack segment ?
8086 Microprocessor supports Word stack. Stack segment parameters tell the assembler to alert linker that this segment statement states the program stack area.
A program should have a stack area in that computer is continuously carrying on numerous background operations which are completely transparent, even to an assembly language programmer, for illustration a real time clock. Every 55 milliseconds real time clock interrupts. Every 55 ms CPU is interrupted. CPU records state of its registers and then goes about updating the system clock. When it finishes servicing system clock it has to restore registers and go back to doing whatever it was doing when interruption took place. All such information gets recorded in stack. If your program has not any stack and if real time clock were to pulse whereas the CPU is running your program there will be no way for CPU to find the way back to your program when it was through updating the clock. 0400H byte is default size of allocation of stack. Please consider if you haven't specified stack segment it is automatically created.
Storing a word in Memory: That is similar process with fetching a word from memory. The required address is loaded into the MAR After that data to be written are lo
Q. What is control function? If transfer is to take place only under a predetermined control condition then this condition can be specified as a control function. For illustrat
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The constructed datatype of C is known as Structure is a constructed datatype of C.
How many AND gates are required to realize Y = CD+EF+G ? Ans. Y = CD + EF + G for realize this two AND gates are needed (for CD and EF).
Q. Instruction Queue in Bus Interface Unit? Instruction queue is employed to store the instruction ‘bytes' fetched. Please conceren two points here: that it's (1) A Byte (2) Qu
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Techno hype - Obstacle to Information System New technology has always been accompanied by a certain amount of euphoria that inevitably leads to unrealistic expectations place
Using Module-Instance Parameter: Parameter values can be overridden while a module is instantiated. New parameter values are passed at the time of module instantiation. Top-
Q. Show the fundamental process of instruction execution? The fundamental process of instruction execution is: 1. Instruction is fetched from memory to CPU registers (calle
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