add comment / corrections

src/drivers/debug.asm

@@ -1,4 +1,25 @@
-
+; =============================================================================
+;  Project  : Custom BIOS / ROM
+;  File     : debug.asm
+;  Author   : frater
+;  Created  : 06 jan 2026
+;
+;  License  : GNU General Public License v3.0 or later (GPL-3.0+)
+;
+;  This program is free software: you can redistribute it and/or modify
+;  it under the terms of the GNU General Public License as published by
+;  the Free Software Foundation, either version 3 of the License, or
+;  (at your option) any later version.
+;
+;  This program is distributed in the hope that it will be useful,
+;  but WITHOUT ANY WARRANTY; without even the implied warranty of
+;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;  GNU General Public License for more details.
+;
+;  You should have received a copy of the GNU General Public License
+;  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; =============================================================================
 
 debug_puts:
 .next: