Designs a programmable timer using 8253 and 8086. Draw the interfacing diagram of 8253 with 8086. The CLK input to the timer is 1 MHz. 8253 is connected in I/O mapped I/O. The port addresses of 8253 are 50H, 52H, 54H, and 56H corresponding to counter 0, counter 1, counter 2 and control word register respectively. Write the following ALP to use 8253 as counter to count till FFFFH