Computer Engineering 1502 Advanced Digital Design

1. Computer Engineering 1502Advanced Digital Design Professor Donald ChiarulliComputer Science Dept.5427 Sennott Square624-8839don@cs.pitt.edu

2. Course Assistants and Resources Jason Bakos – TA Office – 5426 Sennott Square jbakos@cs.pitt.edu Sam Dickerson –TA Office – 271-I Benedum Hall sdickers@cs.pitt.edu Web online forum – see Course web page www.cs.pitt.edu/~don/coe1502

3. Goals of this course • Learn tools and techniques of modern digital design for large scale digital systems • Complement your Computer Architecture Course (CoE 1541) with actual design experience for the processor covered in that course. • PREREQUISITE – CoE 0501 • CO-REQUISITE – CoE 1541 Pre/Co requisites are non-negotiable

4. Things to do today • Choose a lab partner (carefully) • Read carefully, sign and return a copy of the course syllabus • Add your name and e-mail address to the electronic class roster via the course web page. Next class • Set up your account, make sure the tools work properly • Each student will have a home directory, and your group will have a shared directory (greek letters). Verify that you have proper access to this directory. • Proceed with the tools tutorial, make sure that you do the library setup part on both accounts.

5. What’s expected of you • Most of the work in this class is divided into a series of units that will be combined into your first processor design • A unit will begin with a lecture (approx 1 hour) at the beginning of class • You will have one or two weeks to complete the unit depending on the complexity • Units will be checked individually by myself or the TA -- demonstrations are required to receive credit for a unit • Units not checked on the due date will be considered late with credit deducted • Units more than one week late will receive no credit (but you will still have to do them)

6. www.cs.pitt.edu/~don/coe1502

7. Grading • Two projects plus final exam • Project 1 – due at Midterm (approx 33%) • complete multicycle CPU with interrupt controller • graded as average of four units • completed in group of two • Project 2 – due at end of term, usually on day of final (approx 33%) • complete pipeline CPU with primary cache controller • graded as four units (CPU/cache/CPU testbench/cache testbench) • project group of four students • Final Exam – Practical exam(approx 33%) • Design exam given in class • Must complete small design project in 2 hours • Completed individually

8. Units in Project 1 • ALU: design, verification and synthesis • CPU: Multi-cycle implementation of base instruction set • Exception handler: 1 external interrupt, 3 internal traps • Memory bus controller: interface to RAM on Wildfire FPGA board • Synthesis: Synthesis and test on Wildfire FPGA board

9. Project 2 • Structured to emulate industrial design experience • Work as project team of 4 students • Two students assigned as principle designers • Two students responsible of test and verification • Instructor or TA acts as project leader

10. Final Exam This is a design class, the final exam will test how effectively you have learned to tools and techniques of digital design You will be given the specification for a small device that you should be familiar with either from experiences in this or other classes You will be given two hours to implement this device using the software tools you have used in the course Grading will be based on completeness, functionality and quality of the design that you produce Since this is the only individual grade you will receive in this class, it will weigh heavily in the computation of your course grade

11. Software Tools HDL Designer Suite - Mentor Graphics Inc FGPA Advantage - Design Entry Tool ModelSim - Simulator Xilinx - Design Synthesis FPGA place and Route tools

12. Design Flow DesignEntry Verification VHDL FPGA Advantage ModelSim Xilinx LogicSynthesis Place and Route FPGA Hardware LogicAnalyzer

13. Hardware platform:Field Programmable Gate Arrays “Wildfire” reconfigurable processing card • Xilinx Virtex VP100 FPGA • 99K+ logic cells • 16MB x 64bit Ram • 64 bit channel logic analyzer interface • PCI bus host interface logic

14. FPGA Structure

15. Control Unit Integer ALU 32 x 32bit Register file Data Cache Inst. Cache Memory Interface Target CPU ArchitectureMIPS R2000* organization** • 3 address architecture • load/store machine • 32 x 32bit register file • three instruction formats • full version of the processor used in H+P text. • Intruction set reference on class web page * modified version for this class. ** Floating Point registers and ALU not shown