/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

1 vote347 views1 answer
Json vulnerabilities
Assembly
0 vote325 views1 answer
Where correlation is used
Assembly
2 votes380 views1 answer
Django template url with parameter
Assembly
0 vote343 views1 answer
Javafx fxml loader example
Assembly
0 vote301 views1 answer
Chrome extension debug log messages
Assembly
0 vote319 views1 answer
Latex image textwidth
Assembly
0 vote311 views1 answer
Vmware workstation player disable side channel mitigations
Assembly
0 vote351 views1 answer
Jz contion assembly
Assembly
1 vote323 views1 answer
Pickle write in directory
Assembly
2 votes413 views1 answer
Cancel shutdown timer
Assembly