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ASSUME: Assume Logical Segment Name:-
The ASSUME directive which is used to inform the assembler, the specified names of the logical segments to be consider for different segments which is used in the program. In the assembly language program, each of thesegment is given a particular name. For instance, the code segment can be given the name CODE; data segment can be allotted the name DATA etc. The statement ASSUME CS: CODE directs the assembler that the machine codes are available in a segment named CODE, and so the CS register is to be loaded having the address (segment) allotted by operating system for the label CODE, while loading. IN the same manner, ASSUME DS : DATA denote to the assembler that the data items related to the program, are available in a logical segment named DATA, and the DS register can be initialised by the segment address value decided by the operating system for the data segment, whereas loading. It then assumed the segment DATA as a default data segment for each memory operation, that is related to the data and the segment CODE as a source segment for the machine codes of the program. The ASSUME statement is necessary at the starting of each assembly language program, without which a message 'CODE/DATA EMITTED WITHOUT SEGMENT' may be issued by an assembler.
Register Organization of 8086 8086 has a great set of registers containing special purpose and general purpose registers. All the 8086 resisters are 16-bit registers.
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Cache Memory Caching is a technology based on the memory subsystem of any computer. The majoraim of a cache is to accelerate the computer while keeping the cost of the computer
GROUP : Group the Related Segments:- The directive which is used to form logical groups of segments with same purpose or type. This isused to inform the assembler to form a log
Problem (a) Prepare the assembly code sequence for each of the four styles (accumulator, memory-memory, stack, load/store) of machine for the code fragment: A = B + C;
DAA: Decimal Adjust Accumulator:- This instruction is utilized to convert the result of the addition operation of 2 packed BCD numbers to a valid BCD number. The conclusion has to
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