INT 62 u - FGDRIVER v3.03 - "FG_SOUND" - MAKE SOUND FOR SPECIFIED DURATION
        AX = 009Dh
        BX = frequency in Hertz (18-32767)
        CX = duration in clock ticks (0000h or negative for continuous sound)
Notes:  For FGDRIVER v1.10, this function was "FG_ALLOCCMS" (see AX=0001h);
          "FG_SOUND" was AX=0088h
        This call is ignored if asynchronous sound (AX=0089h,AX=008Bh,
          AX=008Dh) is already in progress
SeeAlso: AX=0048h,AX=006Ah,AX=009Eh,AX=00A0h,AX=00AAh

.