allow disabling of serial or parallel devices (Stefan Weil)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2141 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/qemu-doc.texi b/qemu-doc.texi
index 3bf3b5c..144381f 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -506,12 +506,16 @@
This option can be used several times to simulate up to 4 serials
ports.
+Use @code{-serial none} to disable all serial ports.
+
Available character devices are:
@table @code
@item vc
Virtual console
@item pty
[Linux only] Pseudo TTY (a new PTY is automatically allocated)
+@item none
+No device is allocated.
@item null
void device
@item /dev/XXX
@@ -593,6 +597,8 @@
This option can be used several times to simulate up to 3 parallel
ports.
+Use @code{-parallel none} to disable all parallel ports.
+
@item -monitor dev
Redirect the monitor to host device @var{dev} (same devices as the
serial port).
