What is memory address space?
What is memory address space?
An address space is a range of valid addresses in memory that are available for a program or process. That is, it is the memory that a program or process can access. The memory can be either physical or virtual and is used for executing instructions and storing data.
What is the size of each memory location in 8086 microprocessor?
Difference between 8085 and 8086 Microprocessor
| 8085 Microprocessor | 8086 Microprocessor |
|---|---|
| It is an 8-bit microprocessor. | It is a 16-bit microprocessor. |
| It has a 16-bit address line. | It has a 20-bit address line. |
| It has a 8-bit data bus. | It has a 16-bit data bus. |
| The memory capacity is 64 KB. | The memory capacity is 1 MB. |
What is the size of physical address of any memory location?
Physical memory is 32MB, byte-addressable, and words are 4 bytes each. Virtual addresses are 32 bits, and pages are 16kB.
How is memory organized in the 8086 microprocessor?
Even the memory is byte-addressable, yet the 8086 microprocessor an easily handle up to 16 bits of data at a time through its 16 data lines. So, to organize the memory efficiently, the entire memory in 8086 is divided into two memory banks: odd bank and the even bank.
What is the stack segment in the 8086?
The stack segment is that segment of memory which is used to store stack data. The number of address lines in 8086 is 20, 8086 BIU will send 20bit address, so as to access one of the 1MB memory locations.
What is the read and write cycle of the 8086?
8.11 MEMORY READ AND WRITE BUS CYCLES •Fig. 8-22(a) shows a memory read cycle of the 8086: • During period T 1, o The 8086 outputs the 20-bit address of the memory location to be accessed on its multiplexed address/data bus.
How is an offset address provided in an 8086?
To address a specific memory location within a segment we need an offset address. The offset address is also 16-bit wide and it is provided by one of the associated pointer or index register. Figure: Software model of 8086 microprocessor To be able to program a microprocessor, one does not need to know all of its hardware architectural features.