/Assembly/What do you mean by io address and memory address

What do you mean by io address and memory address

Memory mapped I/O is a technique of performing I/O operations between the CPU and the I/O device. We can perform I/O simply by accessing bytes of memory and relying on the OS kernel to ensure that the changes to the memory are propagated to the mapped I/O device.

This technique can provide performance benefits like :

A normal read() or write() call involves two transfers. One between the I/O device and the kernel buffer cache, and the other between the buffer cache and a user-space buffer. Memory mapping eliminates the second of these transfers.
Memory mapping can also improve performance by lowering memory requirements. It uses one less buffer to store the data i.e. a single buffer is shared between the kernel space and user space.

What do you mean by io address and memory address

Memory mapped IO is one where the processor and the IO device share the same memory location(memory),i.e.,the processor and IO devices are mapped using the memory address

Similar codes

0 vote135 views2 answers
Wget output filename
Assembly
0 vote147 views1 answer
Pyplot name axes
Assembly
0 vote62 views1 answer
Change terminal font color
Assembly
0 vote172 views1 answer
Does filter change original array
Assembly
0 vote132 views1 answer
ARM assembly divide by 2
Assembly
0 vote134 views1 answer
Android studio manually add copyright
Assembly
1 vote194 views1 answer
Custom color bootstrap buttonm
Assembly
0 vote139 views1 answer
Open new terminal window mac
Assembly
0 vote132 views1 answer
Bidirectional binding between string Property and integerproperty
Assembly
0 vote142 views1 answer
Glsl uniform struct
Assembly