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What is software interrupt?
A software interrupt is initiated by implementing an instruction. Software interrupt is a special call instruction that behaves like an interrupt rather than a subjective call. The most common use of software interrupt is associated with supervision call instruction. This instruction gives means for switching from a CPU user mode to the supervision mode. A software interrupt that steers the old CPU state and brings is new PSW that belongs to the supervisor mode
Explain analysis and synthesis phase of a compiler. The synthesis and analysis phases of a compiler are: Analysis Phase: In this breaks the source program in constituent
A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome
Draw and elucidate the block diagram of programmable interrupt controller 8259. The 8259A adds 8 vectored priority encoded interrupts to microprocessor. It can be expanded to 6
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For a non blocking crossbar configuration, taking N as the number of subscribers, there will be number of cross points and _ number of switches for est
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a) Give eight properties for each of static RAM (SRAM) and DRAM (dynamic RAM) and provide the low-level structure of each type of memory. b) Assume a system with 16 Megabytes o
Testing, Testing, Testing
Develop a regular expression for Real number and Real number with optional fraction (i) A regular expression for real number is [+ | -] (d)+. (d)+ (ii) A regular expression
Words having 8-bits are to be stored into computer memory. The number of lines required for writing into memory are ? Ans. 8-bit words needed 8 bit data lines.
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