A computer system must meet the following specifications. The system has a $16-$bit address bus,an $8-$bit data bus, and READ and WRITE control signals. $8$K $8$ of RAM starting at address $4000$H constructed using $4$K $4$ chips $4$K $8$ of ROM starting at address F$000$H constructed using $2$K $8$ chips An input port with no READY signal at memory$-$mapped address $1000$HDesign the memory subsystem and the I$/$O subsystem for this computer system.