ref: 26cc14d67eb7a6c6e8d19d179333f205f98206a0
dir: /sys/man/1/reform/
.TH REFORM 1 .SH NAME audio, pm - MNT Reform 2 support utilities .SH SYNOPSIS .B reform/audio [ .B -1 ] [ .B -D ] [ .B -m .I mountpoint ] [ .B -s .I service ] .PP .B reform/pm [ .B -D ] [ .B -m .I mountpoint ] [ .B -s .I service ] .SH DESCRIPTION These programs provide support for certain functions of MNT Reform 2 computing device and make controlling file systems available under .BR /dev . .PP .SS Audio .I audio initializes the DAC (Digital-to-Analog Converter) on the platform and provides a standard \fIaudio\fR(3) interface to control volume and other parameters. With .I -1 only the initialization is performed and the program exits immediately. .PP The following files are provided by the program: .TP .B audioctl Shows the current status .I (on or .I off ) of the three "outputs" - .BR master , .B hp and .BR spk . Each can be enabled, disabled or toggled, by writing a single line to the same file, consisting of the output name and the desired action - .I on , .I off or .I toggle , accordingly. .IP DAC can be reinitialized by writing a single .BR reset . .TP .B volume Provides an interface for volume control (see \fIaudio\fR(3)). For ease of use, .B volume supports relative adjustments by prefixing a number with a sign. \fImaster +1\fR, for example, will increase the volume on .B master by 1%, which is 0.5dB for this particular output. For .B hp and .B spk one percent is 1dB. .IP Enhanced stereo separation can be enabled by writing .BR 3d , followed by desired percentage of the effect. .SS Power and monitoring .I pm presents a file system consisting of the following files: .TP .B light Provides a way to control the backlight of the built-in LCD by writing \fIlcd [-+]N\fR, where .I N is expressed in percentage, either as an absolute value (0-100) or relative to the current brightness - by prefixing with a sign. Reading .B light returns the current brightness. .TP .B cputemp Exposes the current temperature reading of the CPU. .SH SOURCE .B /sys/src/cmd/reform .SH SEE ALSO .IR audio (3) .SH HISTORY MNT Reform 2 support first appeared in 9front (August, 2022). .SH BUGS Only 44100Hz (default) and 48000Hz sample rates are supported with .IR audio , recording is not implemented. .PP .I Light was chosen as a shorter alternative to .IR brightness . In the future it might support controlling keyboard and trackball light levels.