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@@ -89,19 +89,22 @@ and use the interleaved 4 channel data.
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There are some control switchs affecting to the speaker connections:
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-"Line-In As Rear" - As mentioned above, the line-in jack is used
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- for the rear (3th and 4th channels) output.
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-"Line-In As Bass" - The line-in jack is used for the bass (5th
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- and 6th channels) output.
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-"Mic As Center/LFE" - The mic jack is used for the bass output.
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- If this switch is on, you cannot use a microphone as a capture
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- source, of course.
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-
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+"Line-In Mode" - an enum control to change the behavior of line-in
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+ jack. Either "Line-In", "Rear Output" or "Bass Output" can
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+ be selected. The last item is available only with model 039
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+ or newer.
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+ When "Rear Output" is chosen, the surround channels 3 and 4
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+ are output to line-in jack.
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+"Mic-In Mode" - an enum control to change the behavior of mic-in
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+ jack. Either "Mic-In" or "Center/LFE Output" can be
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+ selected.
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+ When "Center/LFE Output" is chosen, the center and bass
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+ channels (channels 5 and 6) are output to mic-in jack.
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Digital I/O
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-----------
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-The CM8x38 provides the excellent SPDIF capability with very chip
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+The CM8x38 provides the excellent SPDIF capability with very cheap
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price (yes, that's the reason I bought the card :)
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The SPDIF playback and capture are done via the third PCM device
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@@ -122,8 +125,9 @@ respectively, so you cannot playback both analog and digital streams
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simultaneously.
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To enable SPDIF output, you need to turn on "IEC958 Output Switch"
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-control via mixer or alsactl. Then you'll see the red light on from
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-the card so you know that's working obviously :)
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+control via mixer or alsactl ("IEC958" is the official name of
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+so-called S/PDIF). Then you'll see the red light on from the card so
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+you know that's working obviously :)
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The SPDIF input is always enabled, so you can hear SPDIF input data
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from line-out with "IEC958 In Monitor" switch at any time (see
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below).
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@@ -205,9 +209,10 @@ In addition to the standard SB mixer, CM8x38 provides more functions.
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MIDI CONTROLLER
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---------------
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-The MPU401-UART interface is enabled as default only for the first
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-(CMIPCI) card. You need to set module option "midi_port" properly
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-for the 2nd (CMIPCI) card.
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+The MPU401-UART interface is disabled as default. You need to set
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+module option "mpu_port" with a valid I/O port address to enable the
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+MIDI support. The valid I/O ports are 0x300, 0x310, 0x320 and 0x330.
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+Choose the value which doesn't conflict with other cards.
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There is _no_ hardware wavetable function on this chip (except for
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OPL3 synth below).
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@@ -229,9 +234,11 @@ I don't know why..
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Joystick and Modem
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------------------
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-The joystick and modem should be available by enabling the control
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-switch "Joystick" and "Modem" respectively. But I myself have never
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-tested them yet.
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+The legacy joystick is supported. To enable the joystick support, pass
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+joystick_port=1 module option. The value 1 means the auto-detection.
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+If the auto-detection fails, try to pass the exact I/O address.
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+
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+The modem is enabled dynamically via a card control switch "Modem".
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Debugging Information
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Takashi Iwai