diff --git a/zshrc b/zshrc
index 06b6960..f57dc55 100644
--- a/zshrc
+++ b/zshrc
@@ -333,6 +333,16 @@ if __has_command cvs; then
 	}
 fi
 
+if __has_command screen; then
+	case "$(uname -s)" in
+	Linux)
+		uart() {
+			screen /dev/ttyUSB${2:=0} ${1:=115200}
+		}
+		;;
+	esac
+fi
+
 # pkgsrc does not like MAKEFLAGS including -j
 __has_command pkg_chk &&
 	alias pkg_chk="MAKEFLAGS= pkg_chk"