For the following data definition: .data value: word 15 letters: byte T, T, 'm num: word 50 chars: space 10 prompt: asciiz "Enter:" Age: .byte 39 What is the address of Age? (Explain in detail why by showing the memory map)

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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### Data Definitions in Assembly Language

#### Given Data Definitions:
```assembly
.data
    value:    .word 15
    letters:  .byte 'I', 'm'
    num:      .word 50
    chars:    .space 10
    prompt:   .asciiz "Enter:"
    Age:      .byte 39
```

### Explanation of Data Definitions

1. **value**: This defines a word (typically 32 bits / 4 bytes) with the value 15.
2. **letters**: This defines an array of bytes with the characters 'I' and 'm'.
3. **num**: This defines a word with the value 50.
4. **chars**: This allocates a block of 10 consecutive bytes in memory.
5. **prompt**: This defines a null-terminated string "Enter:".
6. **Age**: This defines a byte with the value 39.

### Memory Map
To explain the memory address of `Age`, a memory map can be used.

Assuming the starting address for `.data` is `0x10000000`:

| Address Range         | Content               | Description                    |
|-----------------------|-----------------------|--------------------------------|
| `0x10000000` - `0x10000003` | 0x0000000F             | `value: .word 15`              |
| `0x10000004`          | 0x49                  | `letters[0] = 'I'` (0x49 in ASCII) |
| `0x10000005`          | 0x6D                  | `letters[1] = 'm'` (0x6D in ASCII) |
| `0x10000006`          | 0x00000032 (32 in hex)| `num: .word 50`                |
| `0x1000000A` - `0x10000013` | (0s)                 | `chars:10 free bytes`          |
| `0x10000014` - `0x10000019` | 0x45 0x6E 0x74 0x65 0x72 0x3A 0x00 | `prompt: "Enter:\0"`  |
| `0x1000001A`          | 0x
Transcribed Image Text:### Data Definitions in Assembly Language #### Given Data Definitions: ```assembly .data value: .word 15 letters: .byte 'I', 'm' num: .word 50 chars: .space 10 prompt: .asciiz "Enter:" Age: .byte 39 ``` ### Explanation of Data Definitions 1. **value**: This defines a word (typically 32 bits / 4 bytes) with the value 15. 2. **letters**: This defines an array of bytes with the characters 'I' and 'm'. 3. **num**: This defines a word with the value 50. 4. **chars**: This allocates a block of 10 consecutive bytes in memory. 5. **prompt**: This defines a null-terminated string "Enter:". 6. **Age**: This defines a byte with the value 39. ### Memory Map To explain the memory address of `Age`, a memory map can be used. Assuming the starting address for `.data` is `0x10000000`: | Address Range | Content | Description | |-----------------------|-----------------------|--------------------------------| | `0x10000000` - `0x10000003` | 0x0000000F | `value: .word 15` | | `0x10000004` | 0x49 | `letters[0] = 'I'` (0x49 in ASCII) | | `0x10000005` | 0x6D | `letters[1] = 'm'` (0x6D in ASCII) | | `0x10000006` | 0x00000032 (32 in hex)| `num: .word 50` | | `0x1000000A` - `0x10000013` | (0s) | `chars:10 free bytes` | | `0x10000014` - `0x10000019` | 0x45 0x6E 0x74 0x65 0x72 0x3A 0x00 | `prompt: "Enter:\0"` | | `0x1000001A` | 0x
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