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Q. Illustrate program on hypothetical machine?
The program given in figure above is a hypothetical program which performs addition of numbers stored from locations 2001 onwards until a zero is encountered. Consequently X is initialized to 2001 whereas MBR which stores the result is initialized to zero. We have presumed that in this machine all operations are performed by CPU. The programs will execute instructions as:
SKIP instruction is a zero-address instruction and skips next instruction to be executed in sequence. Or we can say it increments the value of PC by one instruction length. The SKIP also can be conditional. For illustration the instruction ISZ skips the next instruction only if the result of most recent operation is zero.
CALL and RETN are used for CALLing subprograms and RETurning from them. Presume that a memory stack has been built such that stack pointer points to a non-empty location stack and expand in the direction of zero address.
Name the switching schemes used in a digital exchange? The several switching systems used are: 1. Strowger Switching System 2. Cross bar Switching. 3. Electronic Swit
Q. Explain functions of direct memory access? Though CPU intervention in DMA is minimised however it should use path between interfaces that is system bus. So DMA involves an e
Differentiate between static and dynamic step loops. Step loops fall into two classes: Static and Dynamic. Static step loops have a fixed size that cannot be changed at runti
What are vectored interrupts? To decrease the time involved in the polling process, a device requesting an interrupt may recognize itself directly to the processor. Then the pr
What are the mapping techniques? a)Direct mapping b) Associative mapping c) Set associative mapping
Q. Compute Physical address of data byte? Offset of data byte = 0020h Value of data segment register (DS) = 3000h Physical address of data byte This computation
Q. Working of Read-Only Memory? A ROM is fundamentally a memory or storage device in which a fixed set of binary information is stored. A block diagram of ROM is as displayed i
how to start a web designing would you please guide me
Q. What is span of control? Span of control tells the ratio among superiors and subordinates. Generally organizations are having two different types of spans. They are Wide Spa
Although there are no compulsory "c" compiler for this subject, but the compiler we are going to use for this example is the Mingw32 compiler. Download the source code files fro
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