ECE 449 Computer Systems Engineering - Notes

• dsim1 DRISC computer version 1
• dsim2 version 2

Spring 2010

• PIO Program example
• Nios II Command Shell
• hello: “Hello, World” for sys2, showing sections, symbols, and disassembly.

RiSC-16 computer by Bruce Jacob, University of Maryland.

• jsim1 (RiSC-16, LW and SW instructions)
• RiSC16 slides (zip file)
• Download jsim2 skeleton. This is skeleton of a multi-stage RiSC-16 computer. Lines (or sections) of code have been removed where indicated by comments.
• jsim3 v1 Non-working version of pipelined RiSC-16 processor
• jsim3 v2 Three-cycle pipeline (four-cycle for data read/write). Does not handle branch/jump instructions.
• jsim3 v3 First working version of full processor (all instructions).
• risclab1. DE2 implementaion of pipelined RiSC-16 processor.

pipelining examples

The following are the result of running pipe16nf.exe and pipe16.exe

RiSC-16 pipeline (single memory)

• prog1 (no forwarding)
• prog1 (with forwarding)
• prog2

Winter 2007

• readbin: a utility for processing binary executable files generated from Nios II executable (.elf) files.
• nios2-asm: commands for assembly, disassembly, simulation, and conversion of simple assembly programs for the Nios II processor.
• Nios II ISA - Example C Program
• Other Nios II ISA Examples

Winter 2006

• spim
• compiler tools (Flex and Bison)

Maintained by John Loomis, last updated 4 April 2011