/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

9 votes389 views2 answers
Learn assembly
Assembly
0 vote327 views1 answer
Install retroarch on Linux
Assembly
0 vote326 views1 answer
Set assembly highligh vim
Assembly
0 vote328 views1 answer
Assign value to struct variable
Assembly
2 votes411 views1 answer
Does telegrsam have its official desktop app
Assembly
0 vote331 views1 answer
Z language latex
Assembly
-1 vote319 views1 answer
Idl language
Assembly
1 vote419 views1 answer
Slt assembly
Assembly
0 vote371 views1 answer
Does filter change original array
Assembly
0 vote360 views1 answer
Windows detect system dark mode
Assembly