7d51bb2262
We now search in a bunch of different directories in order to find IWAD files to use to play with, and the logic is a bit complicated. Add some hopefully friendly documentation to explain where people can put their IWAD files to play with. Part of #597.
22 lines
963 B
Groff
22 lines
963 B
Groff
.TP
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\fBDOOMWADDIR\fR, \fBDOOMWADPATH\fR
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See the section, \fBIWAD SEARCH PATHS\fR above.
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.TP
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\fBPCSOUND_DRIVER\fR
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When running in PC speaker sound effect mode, this environment variable
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specifies a PC speaker driver to use for sound effect playback. Valid
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options are "Linux" for the Linux console mode driver, "BSD" for the
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NetBSD/OpenBSD PC speaker driver, and "SDL" for SDL-based emulated PC speaker
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playback (using the digital output).
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.TP
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\fBOPL_DRIVER\fR
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When using OPL MIDI playback, this environment variable specifies an
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OPL backend driver to use. Valid options are "SDL" for an SDL-based
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software emulated OPL chip, "Linux" for the Linux hardware OPL driver,
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and "OpenBSD" for the OpenBSD/NetBSD hardware OPL driver.
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Generally speaking, a real hardware OPL chip sounds better than software
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emulation; however, modern machines do not often include one. If
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present, it may still require extra work to set up and elevated
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security privileges to access.
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