10 Questions
In the Intel Memory Address Generation, what is the purpose of the segment register?
Specify the starting location of a memory segment
What is the role of the Address registers?
Store the memory addresses of instructions and data
What is the significance of the Offset Value in memory addressing?
Add to the segment register value to generate the physical address
If the data segment starts at location 1000h and a data reference contains the address 29h, what is the actual physical address of the data?
10029
What does Segmented Memory Addressing use to specify a linear address?
Segment value added to offset value
In Intel Memory Address Generation, what is the purpose of the segment register?
To specify the segment portion of the linear address
What does Segmented Memory Addressing use to specify a linear address?
Segment register
What is the role of the Code Segment in memory addressing?
It specifies the segment portion of the linear address
Which segment register is responsible for storing the memory addresses of instructions and data?
Code Segment
What role do Address registers play in memory addressing?
They store the memory addresses of instructions and data
Study Notes
- The text discusses the concept of segmentation in computer architecture, specifically in the context of the 8086 microprocessor.
- Memory is divided into smaller parts called segments, which are: code segment, data segment, stack segment, and extra segment.
- Each segment is identified by a unique 16-bit segment number.
- Within a segment, specific memory locations are identified by a 16-bit offset.
- Segment registers (CS, DS, SS, and ES) store these memory addresses for instructions and data.
- Memory segmentation allows for more efficient use of memory by dividing it into manageable sections.
- The Intel Microprocessor Unit (BIU) determines physical memory addresses by adding the segment register and the offset value.
- A logical address is specified as a segment:offset combination, while the physical address is obtained by adding the segment register and the offset.
- Each byte in memory is assigned a unique 20-bit address, creating a 1 megabyte addressable memory space.
- The text highlights the problem of fitting 20-bit memory addresses into 16-bit registers, and solves it by discussing the method of memory segmentation.
- In the example given, the data segment starts at location 1000h, and a reference to data located at address 29h is given. The actual data is located at the physical address obtained by adding the segment register and the offset.
Learn about segment registers and memory organization in computer architecture, including the challenge of fitting 20-bit addresses into 16-bit registers. Explore solutions such as memory segmentation to manage large memory addresses.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
