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DSP Module 1 Open Exam

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Module 1 Exam You have 20 minutes to complete the exam. Exam is open mind, open book, open eyes. Sharing answers, cheating, asking the instructor questions, anything to get the highest possible grade is completely acceptable, encouraged, and expected. Good luck!

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Module 1 Exam 1. Functional Units (5 pts) a. How many can perform an ADD? Name them. (5 pts) b. Which support memory loads/stores?.M.S.P.D.L six;.L1,.L2,.D1,.D2,.S1,.S2 X 2. C6000 Peripherals (5 pts) a. What does EMIF stand for? (5 pts) b. What do we call the C6000’s audio serial port? (5 pts) c. Which 'C6000 devices have Ethernet support? External Memory Interface (how you connect to memory) McASP C6412, C6455, DM64x, DM643x, DM644x

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3. Conditional Code (10 pts) a.Which registers can be used as cond’l registers? (10 pts) b.Which instructions can be conditional? 4. Performance (5 pts) a.What is the 'C6201 instruction cycle time? (10 pts) b.How can the 'C6201 execute 1600 MIPs? How many MIPs can the ‘C6416 execute? A1, A2, B0, B1, B2 (‘C64x allows A0, too) All of them 5 ns (C6201 can run up to 200 MHz) 1600 MIPs = 8 instructions (units) x 200 MHz 8000 MIPs * (8 instructions x 1 GHz) * not counting the affect of Packed Data Processing (like ADD4)

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4c. Performance (10 pts) c.How many 16-bit MMACs (millions of MACs) can the 'C6201 perform? How about the 'C64x+ devices? 400 MMACs (two.M units x 200 MHz) 8000 MMACs 2.M units x 4 16-bit MACs (per.M unit per cycle) x 1 GHz ---------------- 8000 MMACs If interested in 8-bit MACs, then the total would be: 8000 MMACs

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5a - 5b. Coding Problems (5 pts) a. Move contents of A0 A1 (5 pts) b. Clear register A5 MVA0, A1 orADDA0, 0, A1 orANDA0, -1, A1 orORA0, 0, A1 ZEROA5 orSUBA5, A5, A5 orMPYA5, 0, A5 orCLRA5, 0, 31, A5 orMVK0, A5 orXORA5,A5,A5 orANDA5, 0, A5

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5c - 5e. Coding Problems (5 pts) c. A2 = A0 2 + A1 (10 pts) d. If (B1 0) then B2 = B5 * B6 (5 pts) e. Load an unsigned constant (0x19ABC) into register A6. MPY.M1A0, A0, A2 ADD.L1A2, A1, A2 [B1] MPY.M2B5, B6, B2 see next two slides

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5e. Solutions that Don’t Work mvk0x19abc,a6 F F 9 A B C A6 mvkl0x9abc,a6 mvkh1,a6 F F 9 A B C mvkl mvk0x9abc,a6 mvkl0x00009abc,a6 mvkh00000001,a6 0 0 9 A B C mvkl mvkh

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5e. Solutions that Work mvkl0x9abc,a6 mvklh1,a6 F F 9 A B C mvkl mvkl0x00009abc,a6 mvklh00000001,a6 0 0 0 19 A B C mvkl mvklh mvkl0x00019abc,a6 mvkh0x00019abc,a6 F F 9 A B C mvkl mvkl0x00009abc,a6 mvkh0x00019abc,a6 0 0 0 19 A B C mvkl mvkh

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5f. Coding problems (10 pts) f.Load A7 with contents of mem1 and post- increment the selected pointer. x16 mem mem1 0x10 A7 load_mem1:MVKL.S1mem1,A6 MVKH.S1mem1,A6 LDH.D1*A6++,A7

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Chapter 1 Exam Scoring Points Earned (Questions #1-5):______/100 Grade (circle one):90-100A 80-89B 0-79C (no one likes Ds or Fs!)

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TMS320C6713 Assembly Language (cont’d). Module 1 Exam (solution) 1. Functional Units a. How many can perform an ADD? Name them. a. How many can perform.

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