0
A memory mapped register is a register that has its specific address stored in a known memory location.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
What is a memory register?
A memory mapped register is a register that has its specific address stored in a known memory location.
Differentiate between memory mapped IO and IO mapped IO?
Memory mapped IO is one where the processor and the IO device share the same memory location(memory) while IO mapped IO is one where the processor and the IO device have different memory located to each other.
What is the meaning of memory mapped bus?
Memory mapped buses helps in the extension of the address of the physical ram through which the devices can access the address
What is memory mapping in microprocessor?
Memory mapping is the technique of assigning specific memory locations to specific capabilities. For example, the stack can be "mapped" or placed in memory (usually towards the high end of memory). The "heap" is often placed just below the stack. Not only are software constructs placed (mapped) into specific locations in memory, but peripherals can be mapped to memory as well. For example, a serial port may have several registers "mapped" into memory at specific locations. The means that if you want to send a message out the serial port, you would perform the same operation as you would writing to memory, except that you would provide the address of the write register of the serial port. In this way, peripherals appear exactly the same as memory. The technique replaces the older "port" access in which peripherals were accessed via a different set of signals. (basically a different address space which was access via the "port" command rather than the memory read/write).
What is the Difference between memory mapped IO and IO mapped IO?
In memory mapped I/O, a chunk of the CPU's address space is reserved for accessing I/O devices. In I/O mapped I/O, I/O devices are handled distinctly by the CPU and hence occupy a separate chunk of addresses predetermined by the CPU for I/O. In case of Memory mapped I/O the same address BUS is used for accessing both Memory (RAM) and the Registers of I/O devices. For I/O Mapped I/O, separate address BUS is used. As Address space is generally larger for Memory than I/O registers, the length of I/O address is larger in case of Memory Mapped I/O. For a system which uses I/O Mapped I/O, there is a requirement for a extra h/w Circuitry.
What are the types of memory register?
what is register
Graphic images where each pixel is bit-mapped and take up more memory?
Graphic images where each pixel is bit-mapped and take up more memory?
What is the advantage and disadvantage of interrupt in memory mapped IO?
disadvantages of interrupt
What is a difference between register and a memory location?
difference between register and memory location
Cache memory and register memory?
Register memory are smaller in size than cache memory and registers are faster than cache..Cache memory store the frequently used data from main memory..
Advantage of using a CPU register over memory locations?
CPU register is faster than memory loacations
Memory address register is used to store?
memory addres register is used hold data addresses that refer to the data portion of the memory(by umar farooq.pk) memory addres register is used hold data addresses that refer to the data portion of the memory(by umar farooq.pk)
