/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 vote129 views1 answer
User' does not contain a definition for 'Confirm Password' and no extension method 'Confirm Password' accepting a first argument of type 'User' could be found (are you missing a using directive or an assembly reference?)
Assembly
0 vote135 views1 answer
Jz contion assembly
Assembly
0 vote119 views1 answer
Re optional
Assembly
1 vote186 views1 answer
MOD OPERATOR for register in arm assembly
Assembly
0 vote121 views1 answer
Vba and
Assembly
0 vote121 views1 answer
Html drag and drop anywhere
Assembly
0 vote120 views1 answer
Socket failed: EPERM (Operation not permitted)
Assembly
0 vote129 views1 answer
Glsl uniform struct
Assembly
0 vote121 views1 answer
Scanf prototype in c
Assembly
0 vote126 views1 answer
Undefined reference to `cv::inRange
Assembly