After the bitwise AND instruction is executed in the code sequence below, the final value of BX determines the values for the FLAGS. What is the value for the FLAGS? MOV BX, 91BAH AND BX, 91B2h a. CF= 0, ZF= 0, SF= 1, AF= 0, PF= 1. Ob. CF= 0, ZF= 0, SF= 1, AF= 1, PF= 1. Oc. CF= 0, ZF= 1, SF= 1, AF= 0, PF= 1. Od. CF= 1, ZF= 0, SF= 1, AF= 0, PF= 1.
After the bitwise AND instruction is executed in the code sequence below, the final value of BX determines the values for the FLAGS. What is the value for the FLAGS? MOV BX, 91BAH AND BX, 91B2h a. CF= 0, ZF= 0, SF= 1, AF= 0, PF= 1. Ob. CF= 0, ZF= 0, SF= 1, AF= 1, PF= 1. Oc. CF= 0, ZF= 1, SF= 1, AF= 0, PF= 1. Od. CF= 1, ZF= 0, SF= 1, AF= 0, PF= 1.
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Transcribed Image Text:**Understanding Flag Values in Assembly Language**
After the bitwise AND instruction is executed in the code sequence below, the final value of BX determines the values for the FLAGS. What is the value for the FLAGS?
```assembly
MOV BX, 91BAh
AND BX, 91B2h
```
**Choose the correct flag values:**
- **Option a:** CF = 0, ZF = 0, SF = 1, AF = 0, PF = 1.
- **Option b:** CF = 0, ZF = 0, SF = 1, AF = 1, PF = 1.
- **Option c:** CF = 0, ZF = 1, SF = 1, AF = 0, PF = 1.
- **Option d:** CF = 1, ZF = 0, SF = 1, AF = 0, PF = 1.
**Explanation:**
The **CF** (Carry Flag), **ZF** (Zero Flag), **SF** (Sign Flag), **AF** (Auxiliary Flag), and **PF** (Parity Flag) are used to indicate different states or outcomes after an operation in assembly language. Each flag can have a value of 0 (false) or 1 (true).
- **Carry Flag (CF):** Indicates an overflow was occurred in an arithmetic operation.
- **Zero Flag (ZF):** Set if the result of an operation is zero.
- **Sign Flag (SF):** Set if the result of an operation is negative (most significant bit is set).
- **Auxiliary Flag (AF):** Used in binary-coded decimal (BCD) arithmetic.
- **Parity Flag (PF):** Set if the number of set bits is even.
To determine the correct option, perform the bitwise AND operation and analyze the result to identify which flags are set.
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