Write a hello message

2022-03-03 11:30:49 -05:00 · 2022-03-03 11:30:49 -05:00 · 1944a3450e
commit 1944a3450e
parent 9cc2436d33
1 changed files with 9 additions and 3 deletions
--- a/kernel_main.d
+++ b/kernel_main.d
@ -1,5 +1,11 @@
 extern (C) void mykernel_main() {
-    ubyte * vidmem = cast(ubyte *) 0xB8000u;
-    vidmem[0] = 'D';
-    vidmem[1] = 0x7u;
+    write("Hello from D!");
+}
+
+void write(immutable(char) * message) {
+    ubyte * vidmem = cast(ubyte *) 0xB8000u;
+    for (size_t i = 0u; message[i] != '\0'; i++) {
+        vidmem[i * 2] = message[i];
+        vidmem[i * 2 + 1] = 7u;
+    }
 }