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Computer Science |
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241)The accumulator contains 39H, register C contains 12H, what is the content of accumulator and CY (carry) after executing the following code?
ADD C DAA |
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05H, 1 | 51H, 0 | ||
50H, 1 | 50H,0 | ||
Answer : | |||
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242)The HL register pair contains 0240H, what is the content of the register pair HL after executing DAD H ? | |||
4084H | 0484H | ||
8440H | 4480H | ||
Answer : | |||
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243)The accumulator contains 85H, register B contains 68H, what is the content of accumulator and CY (carry) after executing the following code?
ADD B DAA |
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35H, 1 | 35H, 0 | ||
53H, 0 | 53H, 1 | ||
Answer : | |||
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244)The Register pair HL containd 2012H, register B and C contain 14H and 31H respectively, what is the content of H register after executing DAD B ? | |||
34H | 43H | ||
44H | 40H | ||
Answer : | |||
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245)The accumulator contains 54H and register D containd 82H, what is the content of the accumulator and the CY after executing ANA D? (8085 microprocessor) | |||
00H, 1 | ooH, 0 | ||
82H, 0 | 54H, 1 | ||
Answer : | |||
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246)The accumulator contains 54H and register D containd 82H, what is the content of the Z, P flags? (8085 microprocessor) | |||
1, 0 | 0, 1 | ||
1, 1 | 0, 0 | ||
Answer : | |||
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247)The accumulator contains 03H and register D containd 81H, what is the content of the accumulator and the CY after executing ORA D? (8085 microprocessor) | |||
83H, 0 | 83H, 1 | ||
38H, 0 | 38H, 1 | ||
Answer : | |||
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248)The accumulator contains 03H and register D containd 81H, what is the content of the S, Z flag ORA D? (8085 microprocessor) | |||
1, 0 | 0, 1 | ||
0, 0 | 1, 1 | ||
Answer : | |||
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249)The accumulator contains 77H and register D containd 56H, what is the content of the accumulator and the CY after executing XRA D? (8085 microprocessor) | |||
21H, 1 | 21H, 0 | ||
12H, 0 | 12H, 1 | ||
Answer : | |||
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250)The Accumulator contains 4AH, what is the content of the accumulator and the CY after executing ADI 59H? (8085 microprocessor) | |||
3AH, 0 | 3AH, 1 | ||
A3H, 0 | A3H, 1 | ||
Answer : | |||
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251)The accumulator contains 26H, previous operation has set the carry bit, what is the content of the accumulator and CY after executing ACI 57H? (8085 microprocessor) | |||
7EH, 0 | 7EH, 1 | ||
E7H, 0 | E7H, 1 | ||
Answer : | |||
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252)The accumulator contains 89A, what is the content of the accumulator after executing CMA | |||
00H | 89H | ||
67H | 76H | ||
Answer : | |||
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253)The accumulator contains A7H and the CY flag is reset, what is the content of the accumulator and CY after executing RAR | |||
35H, 1 | 35H, 0 | ||
53H, 0 | 53H, 1 | ||
Answer : | |||
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254)The accumulator contains A7H and the CY flag is reset, what is the content of the accumulator and CY after executing RLC | |||
F4H, 0 | 4FH, 1 | ||
F4H, 1 | 4FH, 0 | ||
Answer : | |||
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255)The accumulator contains A7H and the CY flag is reset, what is the content of the accumulator and CY after executing RRC | |||
D3H, 0 | D3H, 1 | ||
3DH, 0 | 3DH,1 | ||
Answer : | |||
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