1. Blackfin Syntax Moves and Adds
What we already know and have to remember to apply
What we need to learn

2. Assembly code “stub”
Each function written in assembly code has the same general look
The necessary #include files and Section name
Declaration of the function as “global” combined with labels for start and end of function
Setting size of link operation and using LINK instruction to save the return address
Unlink used with JUMP(P0) instruction to cause the function to return “to calling program”
R0 used for return parameter
Required code with Documentation of code
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

3. Example 1 -- stub code
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Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

4. Store/Write code
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

5. Load/read
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Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

6. Move Register
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Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

7. Conditional move register
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Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

8. Half register moves Zero extended Sign extended 8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

9. What does zero extended and sign extended mean?1 1 1 1
0 In all bits 1 1 1 1
0 In all bits
“sign bit” In all bits 1 1 1 1
1 In all bits 1 1 1 1
0 In all bits
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

10. 32 bit adds
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

11. 16 bit adds VIDEO two 16-bit Adds At same time 8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

12. Some assign statement Load immediate
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

13. Some assign statement Load immediate
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

14. 8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

15. 8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada

16. Safe way of doing immediate loads
8/9/2019
Timer Control -- Lab.3, Copyright M. Smith, ECE, University of Calgary, Canada