fixing the remaining issues in the kernel directory

kernel/display.c

@@ -0,0 +1,36 @@
+#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
+}