Assembly Language Questions Medium
In Assembly Language programming, input/output devices are addressed using specific instructions and memory addresses. These instructions and memory addresses are used to communicate with the input/output devices and perform operations such as reading data from input devices or writing data to output devices.
To address input/output devices, the programmer needs to identify the specific device they want to interact with and use the appropriate instructions and memory addresses. This can vary depending on the specific assembly language and hardware being used.
For example, in x86 assembly language, the IN and OUT instructions are commonly used to read from and write to input/output ports respectively. These instructions take a port number as an argument, which specifies the specific input/output device to be accessed.
Additionally, memory-mapped input/output (MMIO) can be used to address input/output devices. In this approach, specific memory addresses are assigned to input/output devices, and the programmer can read from or write to these memory addresses to interact with the devices.
Overall, addressing input/output devices in Assembly Language programming involves using specific instructions and memory addresses to communicate with the devices and perform input/output operations.