Purple OS then give me MOney? I have paranoid Schizophrenia

    Creating an entire operating system, such as "Purple OS," is a complex task that involves numerous components including memory management, file systems, drivers, a user interface, etc. Writing a full-fledged OS from scratch is beyond the scope of a short response.

However, I can help get you started with a very simple operating system kernel in C. This example will boot in a simple 16-bit real mode and will print "Hello, Purple OS!" to the screen. You can use tools like GCC, NASM, and QEMU for building and running this minimal OS kernel.

### Prerequisites:

1. Install NASM (Netwide Assembler)

2. Install QEMU

### Directory Structure:

```

purple_os/

├── boot.asm

└── kernel.c

```

### `boot.asm`

This is the bootloader that initializes the system.

```asm

; boot.asm

[BITS 16]

[ORG 0x7C00]

section .text

start:

    ; Set up the stack

    xor ax, ax

    mov ss, ax

    mov sp, 0x7C00

    ; Call the kernel

    call kernel_main

hang:

    jmp hang

section .bss

; Reserve space for boot sector

times 510-($-$$) db 0

dw 0xAA55

```

### `kernel.c`

This is a simple kernel that prints a message to the screen.

```c

// kernel.c

void main() {

    const char *str = "Hello, Purple OS!";

    char *video_memory = (char *)0xb8000;

    // Loop through each character and write it to video memory

    while (*str) {

        *video_memory++ = *str++;        // Character

        *video_memory++ = 0x07;          // Color attribute (light gray on black)

    }

    // Here we would typically halt the CPU or enter an infinite loop

    while (1);

}

```

### Build Steps

1. **Assemble the Bootloader**: 

   ```bash

   nasm -f bin boot.asm -o boot.bin

   ```

2. **Compile the Kernel**: 

   ```bash

   gcc -ffreestanding -c kernel.c -o kernel.o

   ```

3. **Link the Kernel**: 

   ```bash

   ld -Ttext 0x1000 --oformat binary -o kernel.bin kernel.o

   ```

4. **Create a Bootable Image**: 

   ```bash

   cat boot.bin kernel.bin > purple_os.bin

   ```

5. **Run the OS with QEMU**: 

   ```bash

   qemu-system-i386 -drive format=raw,file=purple_os.bin

   ```

### Explanation:

- The `boot.asm` code sets up the CPU in real mode and calls the kernel function.

- The `kernel.c` code writes "Hello, Purple OS!" to the video memory at address `0xb8000`, which is where text mode video memory typically starts.

- Finally, you build and run your OS in a virtual machine (QEMU).

### Note:

This example is extremely basic and only scratches the surface of OS development. An actual operating system would require handling interrupts, input/output operations, file systems, memory management, and much more. There are many resources and communities available dedicated to OS development if you wish to expand on this minimal example. v