Many audio devices come with a software utility that allows you to select the IRQ and DMA settings. Often, this utility does not record parameters in nonvolatile memory but in a configuration file used by DOS to set the card's configuration at each reboot. This type of configuration file is not used by the Solaris software and does not affect the operation of the card with the Solaris operating environment.
Output volume is controlled by software. Turn the volume thumbwheel to the maximum volume setting if you don't hear any sound.
Consult the manufacturer's documentation to determine if the microphone jack for your device is a mono jack or a stereo jack. Be sure your microphone plug matches; if it doesn't, use a suitable adapter.
Line-in and aux jacks typically require line level voltages, such as output from a tape or CD player line-out jack or from a powered (battery-operated) microphone. Mic jacks typically require lower voltages. Consult the manufacturer's documentation for your device's requirements.
If your card supports Plug and Play, your device resources are configured automatically. Use the following settings for devices that don't support Plug and Play. Defaults are shown in this typeface.
o I/O Address: |
0x530, 0x604, 0xE80, 0xF40 The sbpro driver automatically chooses an unused DMA channel and IRQ line for the device. |
The sbpro support for the AD1848 and compatibles uses one DMA channel for both play and record; simultaneous play/record is not supported.
o I/O Address: |
0x530 The sbpro driver automatically chooses an unused DMA channel and IRQ line for the device. |
The MWSS I/O address on the Tropez card is 0x530 at power-up. It can only be changed by software after the system is booted, and the Solaris operating environment does not do that. Therefore, the Tropez card is only supported at I/O address 0x530.
The Tropez card comes with a software utility for selecting the IRQ, DMA, and MWSS compatibility I/O address settings used by the card. However, that utility does not record those parameters in nonvolatile memory, but in a configuration file used by DOS to set the card's configuration at each reboot. This type of configuration file is not used by the Solaris software and does not affect the operation of the card under the Solaris operating environment.
Any Crystal Semiconductor CS4231-based devices supported by this driver are programmed in AD1848-compatibility mode. This driver does not include support for advanced CS4231 features; in particular, simultaneous play/record.
Some devices can detect that the IRQ you specified is "in use" by another device in the system. If this occurs, the driver prints an error message like the following, and you must change the IRQ setting of either the audio device or the conflicting device.
sbpro: MWSS_AD184x IRQ 7 is 'in use.' |
Some devices are not able to detect such a conflict. The driver will try to use the card, but that will likely result in the system hanging when the card is first used. Thus, it is important to choose an IRQ that does not conflict with another device.
Although the sbpro driver supports A-law encoding on AD1848 and compatible devices, audiotool(1) does not and produces an error message if you select A-law encoding. Use audioplay(1) to play A-law encoded audio files, or use audioconvert(1) to convert the A-law sample into a format that audiotool will accept, such as 16-bit linear. User-written applications can select A-law format using the sbpro driver on AD1848 and compatible devices.
Some system units have the headphone jack wired with its Left and Right channels reversed, so you hear Left output in your right ear and vice versa. The line-out jack at the back of the unit works as expected.
To find the active audio input jack on the back of your system, plug in a sound source. Run audiocontrol(1) and select Record. On the Record panel, turn the Record Volume and Monitor Volume sliders up so you can hear the output. Then select Line In and secondly, the Internal CD to find which audio input port produces sound. If the Internal CD button does not appear on the audiocontrol Record panel, use the Line In selection for the audio input. Use the Microphone button to select the microphone jack on the keyboard.
The quality of sound is better when using an external microphone and speakers, not the ones built into the keyboard.