1. Just enough information to program a Blackfin 90% of this course can be done knowing less than 10% of the Blackfin Instructions Familiarization assignment for the Analog Devices’ VisualDSP++ Integrated Development Environment

6. Analog Devices CONFIGURATOR

7. Run VisualDSP – Add New Project

8. WRITE main.cpp , ADD to Project

10. Then Debug | Run the code

11. Prepare for Assignment – C++ result

12. C++ Version of assignment

13. Assignment talks about “auto-increment”. Here is how to “try” to get compiler to do it

14. Prepare main( ) to call assembly code and CHECK the results

17. Result using “Assembly code” stub Exactly the result we expected

19. Keyword – P0 – 32-bit pointer Register 32 bit pointer register -- P0, P1, P2, P3, P4 Final exam question from last year Careful – when not in the assembler, the linker may give errors which mention p0 which stands for processor 0. The blackfin hardware can come in multi-core version (p0 and p1 for BF561) or multi-processor version.

20. Keyword 32-bit Frame pointer 32 bit Frame pointer -- FP As on many processors LINK and UNLINK instructions involve hidden operations on FP and SP (stack pointer) More on that in a later class

21. Keyword – Memory operations 32 bit memory read [ ] – long-word access R0 = [FP + 4]; If FP contains the value 0x20000000 then fetch the 32-bit value starting at memory location 0x20000004 and place in data register R0

22. Keyword – Memory operations 16 bit memory read W[ ] –word access R1.H = W[FP + 28]; If FP contains the value 0x20000000 then fetch the 16-bit value starting at memory location 0x20000028 and place in data register R1.H which is the UPPER part of the register R1 (R1.H and R1.L)

23. Keyword – Memory operations 8 bit memory reads are also possible B[FP + 4];