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3055f - Score Name ECE 3055 Final Exam 1(15 points Fill in...

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Score:__________ Name:_________________________________________________ ECE 3055 Final Exam 1. (15 points) Fill in each box with T for True or F for False. To correct for random guesses, wrong answers count double off. Blanks count regular points off. Feature/Function/Property of OS Unix Linux NT Supports POSIX Multiprocessing and Threads Virtual memory with page size of 4K only OS code Diskless and ROMable without changes Source code available free OS supports networking Originally Developed for PDP 11 Originally Developed for 80386 architecture Latest version includes sockets OS Source code in C/C++ Used in most RISC workstations RR and/or FCFS with same priority processes Hard Real-time OS User/Kernel mode security Tree file directory structures 2. (5 points) What are the basic file I/O OS calls you would expect to find on a system that supports random access. Briefly describe the function of each call.
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3 . ( 10 points ) The following sequence of MIPS instructions is clocked into the pipeline shown on page 472- 476. Examine this figure carefully to see exactly where each signal is located (i.e. before or after pipeline registers). After Clock cycle 5, Indicate the resulting register values in the spaces provided below. All numbers are in hex. Memory location 1 contains AAAA5555. Assume that each register contains a value equal to the register number prior to execution of this code. andi $2,$2,$4 add $3,$1,$4 lw $2,1 xor $6,$7,$5 sw $6,4 Instruction = __________________________________ Read Data 1 = _________________________________ Read Data 2 = _________________________________ ALU Result = __________________________________ (Data Memory) Read Data = ______________ Write Register (Address) = _____________________ Write Data (input at register file after mux) = __________________________________ Memread = ________________________ RegWrite = _____________________ Memtoreg = ________________________
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4. (10 points)
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