May 2024
Intermediate to advanced
889 pages
30h 8m
English
book
The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
by Lyla B. Das
Content preview from The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson
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PROGRAMMING CONCEPTS–I 2-15
2.3.9 | Full Segment Definition
Now let us see the traditional model of MASM. In the simplified memory model, it is left
to the loader software to initialize the segment registers. In the traditional model, we use
directives to define segments, and instructions to initialize the segment registers. This is
called the Full Segment definition. The CS and SS registers are automatically initialized
by the loader, but the DS and ES (if the extra segment is being used) will have to be ini-
tialized by the programmer. Let us re-write Example 2.9 using the full segment definition.
Example 2.12
DAT SEGMENT ;start the data segment ...
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