Write an assembly program which determine the subtraction of contents of port B from port A and store the result in port C by interfacing 8255 with 8088 microprocessors. The procedure is to

• Construct the control word register
• Input the data from port A and port B
• Subtract the contents of port A and port B
• Display the result on a 7-segment display using port C
• Memory address of Port A of the 8255 PPI is 0740H.

You are also required to provide an assembly language code and labeled schematic diagram as per the aforementioned instructions.