ECE 533 Computer Design Assignment 4

1. Write a PIC32 program to flash the LEDs sequentially red-yellow-green at a rate of 1 cycle (3 flashes) per second. Submit both written documentation and properly packaged project files. Demonstrate to instructor.

2. Demonstrate that you can use the Nios II Command Shell by running the nios2-elf-size and nios2-elf-readelf utilities on one of your Nios II software projects. Write a shell script to capture the outputs to files.

3. Either write a C program to demonstrate addition/subtraction and the logic operations or modify one of my examples. Run the program on the PIC32 and the Nios II (using the simulators). Capture the disassembly for each platform and extract the main progam. Use debug mode (vs. release) so that the associated C statements are in the disassembly.

4. Using either the previous program or a new program, try to force the compiler to use various instructions. For example, on the Nios II, see if the compiler will choose the appropriate instruction for andi or andhi. Does this do the job?

        nb = na & 0x37;    // should use andi
        nc = nb & 0x370000; // should use andhi
   

Maintained by John Loomis, last updated 17 September 2008