ref: 43f160000c540b129733cbea11a492d2598758e6
parent: dce2c95f05b8f5ed734d1a1b75ccd7bfb2260557
author: Simon Howard <[email protected]>
date: Sat Sep 26 20:08:19 EDT 2009
Add documentation for OPL_DRIVER environment variable. Subversion-branch: /branches/opl-branch Subversion-revision: 1693
--- a/man/manpage.template
+++ b/man/manpage.template
@@ -28,6 +28,17 @@
options are "Linux" for the Linux console mode driver, "BSD" for the
NetBSD/OpenBSD PC speaker driver, and "SDL" for SDL-based emulated PC speaker
playback (using the digital output).
+.TP
+\fBOPL_DRIVER\fR
+When using OPL MIDI playback, this environment variable specifies an
+OPL backend driver to use. Valid options are "SDL" for an SDL-based
+software emulated OPL chip, "Linux" for the Linux hardware OPL driver,
+and "OpenBSD" for the OpenBSD/NetBSD hardware OPL driver.
+
+Generally speaking, a real hardware OPL chip sounds better than software
+emulation; however, modern machines do not often include one. If
+present, it may still require extra work to set up and elevated
+security privileges to access.
.SH FILES
.TP
\fB$HOME/.chocolate-doom/default.cfg\fR