Projects

OStritch — A RISC-V OS Kernel

Key features:

• Page virtual memory protection
• Multiple user processes with preemptive thread switching in user space
• Expandable file system based on ext2
• VirtIO block device driver
• Can load and execute any ELF file
• VGA display driver
• User programs: POSIX-like shell, Snake game

Why "OStritch"? During development, we encountered a quirky bug: increasing the timer speed for preemptive interrupts caused random unexpected crashes. Our initial solution was to implement the "Ostrich Algorithm" which solved the problem immediately. We realized the bug was due to a locking issue on kernel bootup :)

Plants vs Zuofu

Recreation of Plants vs Zombies primarily using SystemVerilog, deployed on the Spartan 7 FPGA.