Microprocessors and Interfaces Tutorials

Problems and Solutions, Solved Examples on 8086 interfaces 8255A PPI/8254 Timer and 8259A PIC. Control word to configure 8255A, Modes of 8255A, Read an ASCII character from a keyboard via PORT A of an 8255, reading counts on the fly, display seconds by calling the subroutine, Pulse gerenration, Pulse in every 50 us later from counter 0, ALP to initialize the 8259A in single level-triggered mode non buffered on special fully nested mode, set the 8259A to operate with IR6 masked and specific EOI mode, 8259A interfacing connections with 8086.