ClassicOS/kernel/display.c

#include "display.h"
#include "io.h" // Include your I/O header for port access
#include "vga.h"

// Initialize the display
void init_display(void) {
    // Initialize VGA settings, if necessary
    // This could involve setting up the VGA mode, etc.
    set_display_mode(0x13); // Example: Set to 320x200 256-color mode
}

// Enumerate connected displays
void enumerate_displays(void) {
    // This is a simplified example. Actual enumeration may require
    // reading from specific VGA registers or using BIOS interrupts.
    
    // For demonstration, we will just print a message
    // In a real driver, you would check the VGA registers
    // to determine connected displays.
    clear_display();
    // Here you would typically read from VGA registers to find connected displays
    // For example, using inb() to read from VGA ports
}

// Set the display mode
void set_display_mode(uint8_t mode) {
    // Set the VGA mode by writing to the appropriate registers
    outb(VGA_PORT, mode); // Example function to write to a port
}

// Clear the display
void clear_display(void) {
    // Clear the display by filling it with a color
    // This is a placeholder for actual clearing logic
    // You would typically write to video memory here
}