1 files changed, 18 insertions, 0 deletions
diff --git a/term/term.h b/term/term.h
index 175e6ed5..433990ea 100644
--- a/term/term.h
+++ b/term/term.h
@@ -95,6 +95,24 @@ char *pterm_name;
 
 /* The queues we use */
 struct queue *inputq, *rawq, *outputq;
+
+/* Functions a bottom half defines */
+struct bottomhalf
+{
+  void (*start_output) (void);
+  void (*set_break) (void);
+  void (*clear_break) (void);
+  void (*abandon_physical_output) (void);
+  void (*pending_output_size) (void);
+  error_t (*assert_dtr) (void);
+  void (*desert_dtr) (void);
+  void (*set_bits) (void);
+  void (*mdmctl) (int, int);
+  int (*mdmstate) (void);
+};
+
+struct bottomhalf *bottom;
+extern struct bottomhalf *devio_bottom;
 
 
 /* Character queues */