41. What are the values of the condition flags N, Z, V, and C in the CCR after e

Question

41. What are the values of the condition flags N, Z, V, and C in the CCR after executing the instruction SUBA #$78, given that [A] = $00 and N = 0, C = 0, Z = 1, and V = 0 before the instruction is executed?

a. N = 1, Z = 1, V = 0, C = 0

b. N = 1, Z = 0, V = 0, C = 1

c. N = 1, Z = 0, V = 1, C = 0

d. N = 1, Z = 0, V = 1, C = 1

42. What are the values of the condition flags N, Z, V, and C in the CCR after executing the instruction ROLA, given that [A] = $00 and N = 0, C = 0, Z = 1, and V = 0 before the instruction is executed?

a. N = 1, Z = 1, V = 0, C = 0

b. N = 0, Z = 1, V = 0, C = 1

c. N = 0, Z = 1, V = 0, C = 0

d. N = 0, Z = 1, V = 1, C = 1

43. If register A contains $44, what branch instruction is activated after execution on SUBA #$20

a. BPL b. BEQ c. BVS d. BMI

44. What type of memory organization is used by the HCS12 stack?

a. LIFO b. FIFO c. LILO d. FILO

45. The best way to write a code to compute the following equation: y=x2 +2x+1, is by using:

a. Sinx b. series c. loop d. look-up table

46. BSET DDRB,000011 will force bits _______ of DDRB to go ________?

a. 7,6,1,0 HIGH

b. 5,4,3,2 HIGH

c. 7,6,1,0 LOW

d. 5,4,3,2 LOW

47. BCLR DDRB,111100 will force bits _______ of DDRB to go ________?

a. 7,6,1,0 HIGH

b. 5,4,3,2 HIGH

c. 7,6,1,0 LOW

d. 5,4,3,2 LOW

e.

48. A subroutine will always end with the ENDM instruction.

a. True b. False

49. A MACRO will always end with the RTS instruction.

a. True b. False

50. The advantage of MACROS over SUBROUTINES is

a. They run faster b. They expand and make the code less populated

c. They are more flexible with passing parameter d. none of the previous

Explanation / Answer

41.d 42. c 43.c 44.b 45.d 46.a 47.a 48.a 49.d 50.b

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