split Sound Blaster probing into a function, note future changes to eventual sound card object rather than sndsb library direct use.
split Sound Blaster probing into a function, note future changes to
eventual sound card object rather than sndsb library direct use.

joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib