diff --git a/c64/kernal/iostack/f13e.getin.s b/c64/kernal/iostack/f13e.getin.s
new file mode 100644
index 00000000..02d68bc3
--- /dev/null
+++ b/c64/kernal/iostack/f13e.getin.s
@@ -0,0 +1,13 @@
+
+//
+// Official Kernal routine, described in:
+//
+// - [RG64] C64 Programmer's Reference Guide   - page 283
+// - [CM64] Compute's Mapping the Commodore 64 - page 227/228
+//
+// CPU registers that has to be preserved (see [RG64]): for RS-232: .X, .Y
+//
+
+
+GETIN:
+	jmp getin_real
diff --git a/c64/kernal/f13e.interop b/c64/kernal/iostack/f13e.interop
similarity index 100%
rename from c64/kernal/f13e.interop
rename to c64/kernal/iostack/f13e.interop
diff --git a/c64/kernal/f13e.getin.s b/c64/kernal/iostack/getin_real.s
similarity index 97%
rename from c64/kernal/f13e.getin.s
rename to c64/kernal/iostack/getin_real.s
index 0291988d..681e2a17 100644
--- a/c64/kernal/f13e.getin.s
+++ b/c64/kernal/iostack/getin_real.s
@@ -9,7 +9,7 @@
 //
 
 
-GETIN:
+getin_real:
 
 	// Determine the device number
 	lda DFLTN