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diff --git a/stdlib/termios.tl b/stdlib/termios.tl
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+;; Copyright 2016-2021
+;; Kaz Kylheku <kaz@kylheku.com>
+;; Vancouver, Canada
+;; All rights reserved.
+;;
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions are met:
+;;
+;; 1. Redistributions of source code must retain the above copyright notice, this
+;;    list of conditions and the following disclaimer.
+;;
+;; 2. Redistributions in binary form must reproduce the above copyright notice,
+;;    this list of conditions and the following disclaimer in the documentation
+;;    and/or other materials provided with the distribution.
+;;
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+;; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+;; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+;; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+;; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+(defmeth termios set-iflags (tio . values)
+  (set tio.iflag (logior tio.iflag . values)))
+
+(defmeth termios set-oflags (tio . values)
+  (set tio.oflag (logior tio.oflag . values)))
+
+(defmeth termios set-cflags (tio . values)
+  (set tio.cflag (logior tio.cflag . values)))
+
+(defmeth termios set-lflags (tio . values)
+  (set tio.lflag (logior tio.lflag . values)))
+
+(defmeth termios clear-iflags (tio . values)
+  (set tio.iflag (logand tio.iflag (lognot (logior . values)))))
+
+(defmeth termios clear-oflags (tio . values)
+  (set tio.oflag (logand tio.oflag (lognot (logior . values)))))
+
+(defmeth termios clear-cflags (tio . values)
+  (set tio.cflag (logand tio.cflag (lognot (logior . values)))))
+
+(defmeth termios clear-lflags (tio . values)
+  (set tio.lflag (logand tio.lflag (lognot (logior . values)))))
+
+(defmeth termios go-raw (tio)
+  tio.(clear-iflags ignbrk brkint parmrk istrip inlcr igncr icrnl ixon)
+  tio.(clear-oflags opost)
+  tio.(clear-cflags csize parenb)
+  tio.(clear-lflags echo echonl icanon isig)
+  (if (boundp 'iexten)
+    tio.(clear-lflags iexten))
+  tio.(set-cflags cs8)
+  (set [tio.cc vmin] 1)
+  (set [tio.cc vtime] 0))
+
+(defmeth termios go-cbreak (tio)
+  tio.(clear-iflags icrnl)
+  tio.(clear-lflags icanon)
+  tio.(set-lflags isig)
+  (set [tio.cc vmin] 1)
+  (set [tio.cc vtime] 0))
+
+(defmeth termios string-encode (tio)
+  (let ((*print-base* 16))
+    tio.(sys:encode-speeds)
+    (downcase-str `@{tio.iflag}:@{tio.oflag}:@{tio.cflag}:@{tio.lflag}:\
+                  @{(list-vec tio.cc) ":"}`)))
+
+(defmeth termios string-decode (tio string)
+  (let ((vals (mapcar (op int-str @1 16) (split-str string ":"))))
+    (lset tio.iflag tio.oflag tio.cflag tio.lflag vals)
+    (set tio.cc (vec-list (cddddr vals)))
+    tio.(sys:decode-speeds)))