═══ 1. Help for Selecting Number of Adapters ═══

This field allows you to select the number of Thinkpad Crystal Semi 4231 Audio 
adapters that you have installed in your system. The maximum number of Crystal 
Semi 4231 Audio Adapters is one. 

Note:   If you select zero, audio support for the adapter will not be installed 
        and if installed, it will be removed. 


═══ 2. Help for Crystal Semi 4231 Audio Adapter Install Values ═══

This field lets you customize the required system configuration interfaces that 
let your computer communicate with your adapter.  Select OK to accept the 
default values and continue. 

Note:   If you change the default values, you must select OK.  If you close the 
        window without selecting OK, the new values are not saved, and the 
        system uses the default values. 

Note:   In some cases, incorrect I/O port, hardware interrupt and DMA 
        selections can cause conflicts with other installed hardware.  If your 
        system fails to initialize after install, reinstall and select values 
        which do not conflict. 

See also: 

o I/O Base Address 
o DMA Channel 
o Interrupt (IRQ) 


═══ 3. I/O Base Address ═══

This field allows you to select the I/O Port Base Address for your Crystal Semi 
4231 Audio adapter. 

Use the drop down box to select an Address other than the default displayed. 

See also: 

o I/O Base Address 
o DMA Channel 
o Interrupt (IRQ) 


═══ 4. DMA Channel ═══

This field allows you to select the DMA channel for audio playback and record. 

Use the drop down box to select a channel other than the default displayed. 

See also: 

o I/O Base Address 
o DMA Channel 
o Interrupt (IRQ) 


═══ 5. Interrupt (IRQ) ═══

This field allows you to select the hardware interrupt level for your Crystal 
Semi 4231 Audio adapter. 

Use the drop down box to select an Interrupt other than the default displayed. 

See also: 

o I/O Base Address 
o DMA Channel 
o Interrupt (IRQ)