Below are a number of programming exercises. The aim is that you 1) retrieve your RISC-V implementation 2) prepare a working setup, and 3) refresh your low-level C programming skills.
As a reminder … a zip archive to get you started can be found here.
For this exercise you should simply try to get the zip file to work on your own RISC-V.
As FPGA device, you can pick a ZYNQ XC7Z020-1CLG400C. An even better solution is to pick the PYNQ-Z2 board in case you have the board drivers installed.
Add a print_dec() function.
Write a firmware function get_hamming_weight() that calculates the Hamming weight of a value.
Print the Hamming weight to the output.
unsigned int get_hamming_weight(unsigned int x);Determine how long it takes (in clock cycles) to perform the calculation !!
Write a firmware function get_hamming_distance() that calculates the Hamming distance between two values.
Print the Hamming distance to the output.
unsigned int get_hamming_distance(unsigned int x, unsigned int y);Determine how long it takes (in clock cycles) to perform the calculation !!
Write a firmware function convert() that converts temperature from Fahrenheit to degrees Celsius. The result may be rounded down to approximate the conversion.. The conversion can be calulated using this equation:
Print the result to the output.
unsigned int convert(unsigned int x);Determine how long it takes (in clock cycles) to perform the calculation !!
Be aware that the implementation of the RISC-V is RV32I!!