What is addressable memory of microprocessor?
Byte addressable memory refers to architectures where data can be accessed and addressed in units that are narrower than the bus. An eight-bit processor like the Intel 8008 addresses eight bits, but as this is the full width of the bus, this is regarded as word-addressable.
What is addressable memory in computer?
Content-addressable memory (CAM) is a special type of computer memory used in certain very-high-speed searching applications. It is also known as associative memory or associative storage and compares input search data against a table of stored data, and returns the address of matching data.
How is addressable memory calculated?
So to work out the amount of addressable memory, we must multiply the number of addresses by their size.
- Total Addressable Memory = (2^address bus width) * Data bus width.
- IE a machine with a 16 bit Data Bus and 32 bit address bus would have.
- (2^32)*16 bits of accessible storage.
- or 8GB – Do the math yourself to prove it.
What maximum main memory is addressable by 8 bit address bus?
13.6 Memory addressing size
| Address bus size | Addressable memory (bytes) |
|---|---|
| 7 | 128 |
| 8 | 256 |
| 9 | 512 |
| 10 | 1K* |
Is memory byte addressable or word addressable?
In reality, memory is only byte addressable. It means: A binary address always points to a single byte only. A word is just a group of bytes – 2 , 4 , 8 depending upon the data bus size of the CPU.
Why is MIPs byte addressable?
for MIPs 32-bit, the main memory has a 32-bit address input bus, each slot in memory holds 8-bit, so each address can refer to 8-bits of memory (which is why its byte addressable); since register size is 32-bit, “words” in main memory start at every 4th byte (so that each word is 4 consecutive slots in memory – 4 * 8 = …
What is a word addressable memory?
In computer architecture, word addressing means that addresses of memory on a computer uniquely identify words of memory. It is usually used in contrast with byte addressing, where addresses uniquely identify bytes.
What is content-addressable memory used for?
Also known as “associative storage,” content-addressable memory is a chip that provides fast table lookups, most notably in network routers and switches. For example, Internet routers search a lookup table millions of times per second to find the appropriate port to output packets to.
What is the maximum addressable memory capacity?
16 address bits, 16 address pins The memory on these CPUs is addressable at the byte level. This leads to a memory addressable limit of 216 × 1 byte = 65,536 bytes or 64 kilobytes.
What is the maximum directly addressable memory capacity?
Since 24 bits is used to address the operands the range of address lies between and , the maximum directly addressable memory capacity is which is equivalent to 16 Mega Bytes.
What is the maximum memory size of a microprocessor with a 16 bit address bus?
A 16-bit integer can store 216 (or 65,536) distinct values. In an unsigned representation, these values are the integers between 0 and 65,535; using two’s complement, possible values range from −32,768 to 32,767. Hence, a processor with 16-bit memory addresses can directly access 64 KB of byte-addressable memory.
What is the maximum size of addressable primary memory on a 24 bit machine?
At any rate, with 24-bit addresses, we’d have 224=16777216=16M possible addresses, hence that many possible chunks. If each chunk was a byte that would mean that the total addressable memory would be 16777216 bytes, or 16MB.
What’s the difference between Byte and word addressable memory?
Now we can clearly state the difference between Byte Addressable Memory & Word Addressable Memory. When the data space in the cell = 8 bits then the corresponding address space is called as Byte Address. When the data space in the cell = word length of CPU then the corresponding address space is called as Word Address.
Is there a limit to the size of addressable memory?
Flat memory is conceptually the easiest architecture to appreciate. Each memory location has an address, and each address refers to a single memory location. The maximum size of addressable memory has a limit, which is most likely to be defined by the word size of the chip.
Which is an example of an addressable memory chip?
The maximum size of addressable memory has a limit, which is most likely to be defined by the word size of the chip. Examples of chips applying this scheme are the Freescale Coldfire and the Zilog Z80. Typically]
How much memory can a 24 bit address bus address?
A 20-bit address bus can address up to 2 20 addresses (1 MB). A 24-bit address bus can address up to 16 MB. A 32-bit address bus can address up to 4 GB. Flat memory is conceptually the easiest architecture to appreciate.