Processor Level and CPU Level Processor Level An image below presents the generic block diagram of a processor system. It represents the interface between the processor, memory, and I/O devices through the bus that we discussed in the section on memory interfacing in. The internals of a processor are a microcosm of the processor system shown in …
8086 Execution Unit The 8086 processor is divided into two main components: the execution unit and the bus interface unit. It is controlled by the EU control system which serves a dual purpose: it acts as the control unit and also as a portion of the instruction decoder. The EU also contains the ALU, the processor flags, and the general purpose and …
8086 Bus Interface The bus interface unit (BIU) controls the transfer of information between the processor and the external devices such as memory, I/O ports, and storage devices. Basically, it acts as the bridge between the EU and the external bus. A portion of the instruction decoder is located in the BIU. The instruction queue acts as a buffer …
8086 microprocessor Divided into two functional units which work simultaneously to increase system speed and throughput (inst. exe. per unit time) Bus Interface Unit Execution Unit Bus Interface Unit – Interface to outside world and responsible for all external operations e.g –Sends addresses –Fetches instructions from memory and data from mem./port –Supports instruction queue and address …
Architecture/Functional block diagram of 8086 microprocessor Read More »
8086 Microprocessor is an enhanced version of 8085Microprocessor that was designed by Intel in 1976. It is a 16-bit Microprocessor having 20 address lines and16 data lines that provides up to 1MB storage. It consists of powerful instruction set, which provides operations like multiplication and division easily. It supports two modes of operation, i.e. Maximum …