Refer to the following program and determine the value of Y after the program is ran. .ORIG X3000 LDI R1, X ADD R1, R1, #2 LDI R2, Y AND R2, R2, x0 ADD R2, R1, R1 ADD R2, R1, R1 ADD R2, R1, R1 STI R2, Y X.FILL x3200 Y.FILL x3201 END 04 08 06 02

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Assembly Programming Question
### Assembly Language Program Evaluation

**Refer to the following program and determine the value of Y after the program is run:**

```
.ORIG x3000
LDI R1, X
ADD R1, R1, #2
LDI R2, Y
AND R2, R2, x0
ADD R2, R1, R1
ADD R2, R1, R1
ADD R2, R1, R1
STI R2, Y
X .FILL x3200
Y .FILL x3201
.END
```

**Explanation of the program:**

- **.ORIG x3000**: Sets the starting address of the program to memory location x3000.
- **LDI R1, X**: Loads the value from the address specified in X (which is x3200) into register R1.
- **ADD R1, R1, #2**: Adds the immediate value 2 to the value in register R1.
- **LDI R2, Y**: Loads the value from the address specified in Y (which is x3201) into register R2.
- **AND R2, R2, x0**: Clears register R2 by performing an AND operation with 0.
- **ADD R2, R1, R1**: Adds the value in R1 to itself and stores the result in R2. (First ADD)
- **ADD R2, R1, R1**: Adds the value in R1 to itself again and stores the result in R2. (Second ADD)
- **ADD R2, R1, R1**: Adds the value in R1 to itself again and stores the result in R2. (Third ADD)
- **STI R2, Y**: Stores the value in R2 to the address specified in Y (which is x3201).
- **X .FILL x3200**: Defines the memory location X with the value x3200.
- **Y .FILL x3201**: Defines the memory location Y with the value x3201.
- **.END**: Indicates the end of the program.

**Step-by-step execution:**

1. **LDI R1, X**: Assuming the value at memory address x3200 is Vx, R1 now contains Vx.
2. **
Transcribed Image Text:### Assembly Language Program Evaluation **Refer to the following program and determine the value of Y after the program is run:** ``` .ORIG x3000 LDI R1, X ADD R1, R1, #2 LDI R2, Y AND R2, R2, x0 ADD R2, R1, R1 ADD R2, R1, R1 ADD R2, R1, R1 STI R2, Y X .FILL x3200 Y .FILL x3201 .END ``` **Explanation of the program:** - **.ORIG x3000**: Sets the starting address of the program to memory location x3000. - **LDI R1, X**: Loads the value from the address specified in X (which is x3200) into register R1. - **ADD R1, R1, #2**: Adds the immediate value 2 to the value in register R1. - **LDI R2, Y**: Loads the value from the address specified in Y (which is x3201) into register R2. - **AND R2, R2, x0**: Clears register R2 by performing an AND operation with 0. - **ADD R2, R1, R1**: Adds the value in R1 to itself and stores the result in R2. (First ADD) - **ADD R2, R1, R1**: Adds the value in R1 to itself again and stores the result in R2. (Second ADD) - **ADD R2, R1, R1**: Adds the value in R1 to itself again and stores the result in R2. (Third ADD) - **STI R2, Y**: Stores the value in R2 to the address specified in Y (which is x3201). - **X .FILL x3200**: Defines the memory location X with the value x3200. - **Y .FILL x3201**: Defines the memory location Y with the value x3201. - **.END**: Indicates the end of the program. **Step-by-step execution:** 1. **LDI R1, X**: Assuming the value at memory address x3200 is Vx, R1 now contains Vx. 2. **
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