Quiz 4 F10 soln

Quiz 4 F10 soln - B Accumulator Mem Loc $43 Before...

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ECE265 Quiz 4 NAME: ______________________________________________ Fall 2010 THIS IS AN OPEN BOOK/NOTES QUIZ (10 points) Consider the Instructions Below Fill in the boxes as to the contents in the A and B accumulators after the execution of each instruction. The contents in the accumulators after each instruction are 2 points each. 0000 0000 Xxxx xxxx 0000 1111 A Accumulator B Accumulator Mem Loc $10 Before Execution 0000 0000 CC Reg SXHI NZVC LDAA #$80 $80 xxxx $0F A Accumulator B Accumulator Mem Loc $10 After Execution 0000 1 0 0 0 CC Reg SXHI NZVC Show the contents of these registers/memory after execution of the instruction X means the value is unknown 3) What addressing mode is used? 0000 0011 xxxx xxxx 1111 0101 A Accumulator
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Unformatted text preview: B Accumulator Mem Loc $43 Before Execution 0000 0000 CC Reg SXHI NZVC STAB $43 0000 0011 $F 5 $F 5 A Accumulator B Accumulator Mem Loc $43 After Execution 0000 1 0 0 0 CC Reg SXHI NZVC Show the contents of these registers/memory after execution of the instruction X means the value is unknown 2) What addressing mode is used? 0000 0011 0001 0000 1111 0101 A Accumulator B Accumulator Mem Loc $11 Before Execution 0000 0000 CC Reg SXHI NZVC ADCB $11 $0 3 $F 5 0000 0101 A Accumulator B Accumulator Mem Loc $43 After Execution 0000 0 0 1 1 CC Reg SXHI NZVC Show the contents of these registers/memory after execution of the instruction X means the value is unknown 3) What addressing mode is used?...
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This note was uploaded on 04/01/2012 for the course ECE 265 taught by Professor N /a during the Spring '08 term at Ohio State.

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