Table of Contents
- 1 How many different addresses can a 8-bit address bus address?
- 2 How many address lines are available in address bus?
- 3 How many address lines are there in the address bus of 8085p?
- 4 Which is not a 8-bit microprocessor?
- 5 How do I know if my image is 8-bit or 16 bit?
- 6 How many memory locations can a address bus access?
- 7 How many bytes can a CPU address directly?
How many different addresses can a 8-bit address bus address?
For example, an 8-bit-byte-addressable machine with a 20-bit address bus (e.g. Intel 8086) can address 220 (1,048,576) memory locations, or one MiB of memory, while a 32-bit bus (e.g. Intel 80386) addresses 232 (4,294,967,296) locations, or a 4 GiB address space.
How many address lines are available in address bus?
The width of the address bus (that is, the number of wires) determines how many unique memory locations can be addressed. Modern personal computers and Macintoshes have as many as 36 address lines. This theoretically allows them to access 64 gigabytes of main memory.
How many address lines are there in the address bus of 8085p?
16 bit address lines
The microprocessor 8085 has 16 bit address lines from A15-A8 and AD7-AD0. These lines are used to transfer 16 bit address of memory as well as 8-bit address of I/O ports.
What is the role of an address bus?
The sole purpose of an address bus is to identify the address of the location in cache or main memory that is to be read from or written to. Each location in memory will have its own unique address, this is known as addressability.
What will be the size of its address bus?
The size of the address bus determines how much memory the CPU can address directly. For example, a 20-bit address bus can access up to one megabyte (1MB); 24 bits reaches 16MB, and 32 bits can handle four gigabytes (GB).
Which is not a 8-bit microprocessor?
1. Which of the following microprocessors is not 8 bit microprocessor? Ans d) 68000, The Motorola 68000 (“’sixty-eight-thousand’”; also called the m68k or Motorola 68k, “sixty-eight-kay”) is a 16/32-bitCISC microprocessor core designed and marketed by Motorola Semiconductor Products Sector.
How do I know if my image is 8-bit or 16 bit?
If you aren’t sure what bit your image is set to, it’s easy to check.
- Open you image in Photoshop.
- Go to the top menu and click image > mode.
- Here you will see a check mark next to the Bits/Channel your image is set to.
How many memory locations can a address bus access?
For example , a 1 bit address bus can access 2 memory locations; a 2 bit address bus can access 4 memory locations and a 3 bit address bus can access 8 memory locations and so on. In order to know how much memory we are actually accessing, we must know how many bits can be held in each storage location.
How is the size of the address bus determined?
The size (width) of the address bus determines how many memory locations can be addressed. For example , a 1 bit address bus can access 2 memory locations; a 2 bit address bus can access 4 memory locations and a 3 bit address bus can access 8 memory locations and so on.
How many memory locations are identified by a processor with 8 bit?
Directly, a CPU with only an 8-bit address bus can only directly address 256 bytes of memory directly, though as Lawrence Stewart points out in his answer, a CPU will rarely be the only determining factor of how much memory there is in the computer. There could be all kinds of support hardware that expands the actual available memory.
How many bytes can a CPU address directly?
But in terms of actual direct addressing without external hardware, the CPU itself would only be able to address 256 bytes.