he objective of this laboratory is to implement a calculator with decimal display.

Equipment and software: You can use any FPGA boards of your choice for this lab. If

you are going to use the Xilinx boards, you can download the Xilinx Vivado Development

Environment for free from the Xilinx $($now AMD$)$ website.

Specification of the calculator: This lab is going to use $8$ switches and $1$ button on the

FPGA board. You should implement the $8-$bit ISA you designed in the first lab on the board. The

$8-$bit instruction words should be mapped to the $8$ switches, and you should use one of the buttons

for clock signal.

Required instructions:

Implement the following non$-$branch instructions and your calculator should be able to produce

correct results.

$$ load

$$ add$/$negate

$$ print

Optional with extra credit:

Implement the following condition$/$branch instructions. The perfect score for this optional part will

be $30$ extra points in addition to the $100$ points for the required part.

$$ skip

$$ compare

Remember that your ISA is required to have a display instruction. For that instruction, you should

display the content on the $4-$digit seven$-$segment display on the board. All numbers are displayed

in decimal format on the $4-$digit seven$-$segment display, even though the operands are read from

the switches or registers as binary numbers. For example, if the content to display is $0101,$ the

$4-$digit seven$-$segment display should read as $[$empty$][$empty$][$empty$]5.$

Note that you may first need to implement a button debouncer that will help your calculator

implementation, if you find the buttons on your board are particularly bouncy. The button

debouncer is not required.

A sample project is provided to show the use of seven$-$segment display and an implementation of

button debouncer on the Basys $3$ board. $($ give all the code and files required to fulfill the project requiremnts $)$