1. Vodafone Chair Mobile Communications Systems, Prof. Dr.-Ing. G. Fettweis chair HW/SW Co-design Praktikum Erik Fischer & Emil Matúš erik.fischer@ifn.et.tu-dresden.de

2. chair Benefits from this Praktikum  Learn the practical use of HW/SW-Codesign from the application programmers point of view  Get familiar with the Tensilica IDE which is used by many companies today to create customized DSPs  Since the IDE is based on the very common Eclipse framework this knowledge also facilitates the access to other Eclipse based IDEs  Course attendance certificate (Seminarschein) for 2 SWS  Optional: get a grade for the final written elaboration (3 pages) TU Dresden,CATSSlide 2

3. chair TU Dresden,CATSSlide 3 Tensilica Concept Hot Spot Accelerate  RISC  Enhanced RISC (ASIP) Software Compiler

4. chair TU Dresden,CATSSlide 4 Tensilica Instruction Extension (TIE) language  Extension of Xtensa processor cores:  new processor instructions,  execution units,  register files  state variables.  TIE:  hybrid of the Verilog and C languages  easy to learn and use  Xtensa Xplorer interfaces with Tensilica TIE Compiler to rapidly explore and verify TIE implementations  Goal:  to understand the Tensilica tool set for configurable processor,  get familiar with the Xtensa Xplorer IDE,  learn how tune the processor configuration and how to use TIE.

5. chair TU Dresden,CATSSlide 5 HW architecture: Xtensa LX 2

6. chair TU Dresden,CATSSlide 6 Creating Pipelined Instructions operation MUL_SRL_16 {out AR z, in AR a, in AR b} {} { wire [31:0] m = TIEmul(a[15:0],b[15:0],1); assign z = {16'b0, m[31:16])}; } schedule ms {MUL_SRL_16} {def z 2;}

7. chair TU Dresden,CATSSlide 7 DLP: SIMD Extension operation MUL_SRL_16 {out AR z, in AR a, in AR b} {} { wire [31:0] m1 = TIEmul(a[31:16],b[31:16],1); wire [31:0] m0 = TIEmul(a[15:0], b[15:0], 1); assign z = {m1[31:16]), m0[31:16]}; } schedule ms {MUL_SRL_16} {def z 2;}

8. chair TU Dresden,CATSSlide 8 DLP: SIMD and Vector RF

9. chair TU Dresden,CATSSlide 9 Tool Flow

10. chair TU Dresden,CATSSlide 10 Work plan  Registration & Making appointment for introduction  Get Familiar with the Xtensa Xplorer  Introduction to TIE  Profile application – identify hotspots  Create Your Own TIE Instructions  Analyse & Iterate