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Q. Define COM Programs?
A COM (Command) program is binary image of a machine language program. It is loaded in memory at the lowest available segment address. Program code starts at an offset 100h, the first 1K locations being occupied by IVT.
A COM program keeps itsdata, code and stack segments within same segment. Because the offsets in a physical segment can be of 16 bits hence size of COM program is limited to 216 = 64K that involvesdata, code and stack. The subsequent program displays a COM program:
; Title add two numbers as well as store result and carry in memory variables.
; name of segment in this program is chosen to be CSEG
Q. What is Instruction Register? Instruction Register (IR): Here instructions are loaded before execution. Comments on figure above are as below: All representations are
Why Build and fix model is considered as ad-hoc software development model?
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OPPORTUNITIES AND THREATS IN COMPUTER FEILD
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What techniques are used to increase the clock rate R? Ans: The 2 techniques used to increase the clock rate R are: 1. We can reduce the amount of processing done in one basi
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