The correct answer is FALSE.
In Intel’s IA-32 architecture, there is no separate 16-bit address space for I/O devices. Instead, I/O devices are accessed through a special set of registers called the I/O ports. These registers are located in the same address space as the CPU registers, and they are used to control and read data from I/O devices.
The I/O ports are numbered from 0 to 65535, and each port has a specific function. For example, port 0 is used to read the keyboard, port 1 is used to write to the screen, and port 2 is used to control the mouse.
To access an I/O device, the CPU first writes the port number to the I/O port register. Then, the CPU reads or writes the data to or from the I/O device.
The I/O ports are a convenient way to access I/O devices, but they have some limitations. One limitation is that they are not very fast. Another limitation is that they are not very flexible. For example, it is not possible to use the I/O ports to access devices that are not directly connected to the CPU.
To overcome these limitations, modern operating systems use a different method to access I/O devices. This method is called the I/O bus. The I/O bus is a special hardware device that allows the CPU to communicate with I/O devices. The I/O bus is much faster and more flexible than the I/O ports, and it is used by all modern operating systems.