Microprocessor Engineering Handbook In this Introduction to Microprocessor Architecture Diagram of 8086 mp Pin configuration of 8086 Microprocessor Timing Diagram of 8086 Microprocessor Instruction set and Programming of 8086 mp Fundamentals of Semiconductor Memory and their Interfacing Interrupts of 8086 mp Programmable peripheral interface - 8255 Programmable Interval Timer 8254 (PIT) Direct memory access controller 8237 Universal Synchronous - Asynchronous Receiver Transmitter 8251 Programmable Keyboard / Display Interface - 8279