Using Fidex IDE, write an assembly code including an interrupt. The interrupt signal should be generated inside the Picoblaze by your program using an I$/$O port. Make the interrupt vector address as $4095(0$xFFF$)$ from the configuration. Remember that interrupt enable flag should be set when an interrupt signal comes.

Connect an I$/$O port to the interrupt input and implement your design in Vivado. An example top module and a simulation file is provided $($out$\_$port$(7)$ is connected to interrupt input$).$ Show the instruction addresses and stack pointer before and after the interrupt call in Vivado.

Write $10$ nested interrupts and implement your design in Vivado. Show that Program Counter $($PC$)$ returns the initial instruction address $($first callee$)$ after $10$ returns.

Write $32$ nested interrupts and implement your design in Vivado. Observe the consequences and explain the behavior of Picoblaze. Does Program Counter $($PC$)$ return the initial instruction address?