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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
a. Explain the hardware mechanism for handling multiple interrupt requests. b. What are handshaking signals? Describe the handshake control of data transfer during input and out
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Define various system? Single job system: Only one program may be run at a time, and therefore only one person might be work on a machine at one time. Multi job system:
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