Yes, exactly. The empty PLCC68 socket is meant to take the Creative Signal Processor.

Like the above post yes.

It isn't that useful in DOS except for one game called TFX which takes advantage of "3D audio" of the CSP chip.

On Windows (especially in slower computers) it can be used to reduce CPU usage while playing audio. For example: "Accelerating" Windows 95 with Creative's Advanced Signal Processor (CSP)

Gmlb256 wrote on 2022-04-09, 16:50:

Like the above post yes.

It isn't that useful in DOS except for one game called TFX which takes advantage of "3D audio" of the CSP chip.

On Windows (especially in slower computers) it can be used to reduce CPU usage while playing audio. For example: "Accelerating" Windows 95 with Creative's Advanced Signal Processor (CSP)

Thanks for the update, yeah I mainly use this card for DOS games in a 386.