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ex1_f11 - EEL 4744C Dr Gugel Spring 2011 Exam#1 LAST NAME...

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EEL 4744C – Dr. Gugel LAST NAME ___________________________ FIRST NAME ______________ Spring 2011 Exam #1 UF ID#____________________________________ Open book and open notes, 90-minute examination to be done in pencil. No electronic devices are permitted. All work and solutions are to be written on the exam where appropriate. Point System (for instructor and TA use only) Page 2 14 points _________________ Page 3 23 points _________________ Page 4 20 points _________________ Page 5 26 points _________________ Page 6 18 points _________________ TOTAL _________________ out of 101 Grade Review Information: ( NOTE: deadline of request for grade review is the day the exam is returned .) ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________
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Page 2 Page Score = 1. A student would like to use a microprocessor with the following characteristics: I. A 16 bit Address Bus, a 16 bit Data Bus and Control Signals R/-W & -Data_Strobe (-DS) . II. Upon reset , the processor loads the PC with address 0x2000 to begin fetching the first instruction. Given the following devices (and as many as you need of each) 32Kx8 EPROMs , 8Kx8 SRAMs , 74HC273s , 74HC244s and any combinatorial logic you need, show the required circuitry (both decode circuit & memory) to place 4Kx16 of EPROM at the appropriate place in the memory map. Label all signals and assume full address decoding. (7 pt.) 2. Next, show the decode circuit and memory required to place 8Kx16 SRAM starting at 0x5000. Label all signals and assume full address decoding. (7 pt.)
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Page 3 Page Score = 3. Finally, show the decode circuit and devices required to create an input/output port at 0x8000 assuming 512 continuous images. Label all signals. (9 pt.) 4. What is the address range that corresponds to the 512 I/O port images? _______________________________ (2 pt.) 5. A student has wired up 8 low true switches and 8 low true LEDs on their board as shown below: Switches S8:5 (most significant nibble) => Inputs GPIO27:24 , Switches S4:1 (least significant nibble) => Inputs GPIO3:0 LEDs L8:1 (where L8 is the MSB)
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