--- uae/src/include/serial.h	2018/04/24 16:38:39	1.1.1.1
+++ uae/src/include/serial.h	2018/04/24 16:40:25	1.1.1.3
@@ -3,14 +3,23 @@
   *
   * Serial Line Emulation
   *
-  * Copyright 1996 Stefan Reinauer
+  * Copyright 1996, 1997 Stefan Reinauer <stepan@linux.de>
+  * Copyright 1997 Christian Schmitt <schmitt@freiburg.linux.de>
   */
 
 extern void serial_init(void);
 extern void serial_exit(void);
+extern void serial_dtr_off(void);
 
-extern UWORD SERDATR(void);
-extern void  SERPER(UWORD w);
-extern void  SERDAT(UWORD w);
+extern uae_u16 SERDATR(void);
+extern int   SERDATS(void);
+extern void  SERPER(uae_u16 w);
+extern void  SERDAT(uae_u16 w);
 
-extern UWORD serdat;
+extern uae_u16 serial_writestatus(int, int);
+extern int serial_readstatus (void);
+extern uae_u16 serdat;
+
+extern int doreadser, serstat;
+
+extern void serial_flush_buffer(void);