Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Functioning of registers: at any instance of time global registers and only one window of registers is visible and is addressable as if it were only set of registers. So for programming purpose there can be only 32 registers. Window in the above illustration though has a total of 138 registers. This window comprises:
However what is the maximum function calls nesting can be permitted through RISC? Let's elaborate it with the help of a circular buffer diagram technically registers as above have to be circular in the call return hierarchy.
This organization is displayed in the following figure. The register buffer is filled as function Aknown as function B, function B known as function C, function C known as function D. The function D is current function. Current window pointer (CWP) points to register window of the most recent function (function D in this case). Any register references by a machine instruction is added with contents of this pointer to decide the actual physical registers. Instead the saved window pointer recognizes the window most recently saved in memory. This action will be required if a further call is made and there is no space for that call. If function D now calls function E arguments for function E are placed in D's temporary registers denoted by D temp and CWP is advanced by one window.
Figure: Circular-.Buffer Organization of Overlapped Windows
If function E now makes a call to function F, the call can't be made with current status of buffer unless we free space equivalent to precisely one window. This circumstance can easily be determined as current window pointer on incrementing will be equivalent to saved window pointer. Now we need to create space; how can we do it? The simplest way would be to swap FA register to memory and use that space. So an N window register file can support N -1 level of function calls.
So the register file arranged in the form as above is a small fast register buffer which holds most of the variables which are likely to be used heavily. From this point of view register file acts nearlyas a cache memory.
Explain Real Time Operating System? Real time operating System: A real-time operating system has suitably-defined, fixed time constraints. Processing should be done in the d
Charles Babbage 'The grandfather of modern computer' had designed two computers: The Difference Engine: It was based on mathematical principle of finite differences and was us
Which loader is executed when a system is first turned on or restarted? Ans. Bootstrap loader executed while a system is first turned on or restarted.
Directed-Test Methodology Building a directed verification environment with a comprehensive set of directed tests is very time-consuming and difficult. As directed tests only c
Q. What is Gantt chart and Kiviat diagram? Gantt chart: Gantt chart explains numerous activities of every processor with respect to progress in time in busy -overhead - id
Control Unit (CU) : Every PEs are under the control of one control unit. CU controls the inter communication among the PEs. There is a local memory of CU also known as CY memory.
Q. Basic Architecture of computer system? Replacing the ALU and CU (i.e., CPU) of Figure by a microprocessor, and storing instructions and data in the same memory, one arrives
Elements of Parallel Computing and Architecture Parallel computing. Then we shall describe why we need parallel computing and what the heights of parallel processing are. We s
Q. Why are high-speed memories required? Is the main memory not a high-speed memory? The answer to second question is absolutely 'No' though why so? Then if memories are slowe
Logical functions We have discussed the If, 'While and For' Statements, and have used expressions within our syntax i.e. If ( expression) Statement 1;
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd