new OS

kernel/isr.c

@@ -0,0 +1,21 @@
+#include "terminal.h"
+#include "serial.h"
+
+void isr_handler(uint32_t int_num, uint32_t err_code) {
+    terminal_write("Interrupt occurred: ");
+    // Add simple int-to-string printing here
+    serial_write("INT triggered\n");
+
+    if (int_num == 0) {
+        terminal_write(" -> Divide by zero error!\n");
+    } else if (int_num == 13) {
+        terminal_write(" -> General Protection Fault!\n");
+    } else {
+        terminal_write(" -> Unknown interrupt\n");
+    }
+
+    // Halt CPU
+    while (1) {
+        asm volatile ("hlt");
+    }
+}