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11 Cards in this Set
- Front
- Back
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Which of the following program segments will not clear both accumulators?
A) CLRA CLRB B)CLRA TAB C) CLRB TBA D) CLRA ABA |
D) CLRA ABA
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Which of the following contains an opperation that can not be performed directly on a byte in memory using a single instruction?
a-Increment, decrement, shift left arithmetically b-clear, complement, compare c-rotate left, negate, test for zero d-shift right logically, rotate right, test for minus |
b-clear, complement, compare
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Which adressing mode is best suited for adding a list of numbers?
a-direct b-extended c-indexed d-relative |
c-indexed
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Which of the following program segments will successfully swar the contents of accumulators A and B?
a-TAB, TBA, b-STAA, 10, TBA, LDAB, 10 c-TAB, ABA, d-STAA, 10, LDAB, 10, TBA |
b-STAA, 10, TBA, LDAB, 10
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which of the following program segments will cause a branch if the # in mem location 8310 is odd?
a-ror, 83, 10, bcs, 07 b-asl, 83, 10, bcs, 07 c-rora, bcs, 07 d-ldaa, 83, 10, rola, bcs, 07 |
a-ror,83, 10, bcs, 07
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which of the following instructions can be used to testthe result of a subtractionof unsigned binary #s bge, bgt, bcs, blt
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c-bcs
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the program counter in the 68hc11 mpu has how many bits?
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16
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How wide is the adress bus in a 68c11mpu?
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16 bits
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What is the range of addresses of the 68hc11 mpu?
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0000-65, 535 or 0000 ffff
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List the 8 condition code flags
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z zero, carry-borrow c, overflow v, n negative, interupt mask x, stop disable s
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Besides the program counter and the address register, what other 16 bit registers are used in the 68hc11 mpu
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stack pointer and the x/y index registers
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