Add Sound Feature

[BBBmau]

Would be nice to implement some sounds into this, even if its as simple as just a start-up sound when booting.

[nxvvvv]

basically it will boot in an instant. so what you can do is just to edit the kernel, add the loading sound before it loads the logo and terminal.

[araujo88]

I found this function, but was unable to reproduce any sound in virtual box nor in qemu:

void beep() {
    // Set frequency (~440 Hz)
    __asm__ __volatile__ (
        "movb $0xB6, %%al;"
        "outb %%al, $0x43;"
        "movw $0x4E9, %%ax;"
        "outb %%al, $0x42;"
        "movb %%ah, %%al;"
        "outb %%al, $0x42;"
        : /* No output */
        : /* No input */
        : "al", "ax" // Clobbered registers
    );

    // Enable speaker
    __asm__ __volatile__ (
        "inb $0x61, %%al;"
        "orb $3, %%al;"
        "outb %%al, $0x61;"
        : /* No output */
        : /* No input */
        : "al" // Clobbered register
    );

    // Delay (Note: You would normally use a timer for a precise delay)
    for (volatile int i = 0; i < 0xFFFFF; ++i);

    // Disable speaker
    __asm__ __volatile__ (
        "inb $0x61, %%al;"
        "andb $0xFC, %%al;"
        "outb %%al, $0x61;"
        : /* No output */
        : /* No input */
        : "al" // Clobbered register
    );
}

[nxvvvv]

What about pcspkr