Bios Sound Support - Tandy 1000 SL Technical Reference Manual

BIOS Services
Tandy 1000 SL and Tandy 1000 TL BIOS Sound
support
The BIOS in these computers has the same support for sound as all
previous Tandy 1000 computers, as well as support for additional
sound features. The API for this new BIOS support is defined in the
following information.
Software Interrupts
1A hex (26 dec)
Function Summary
AH
=
81H: Get sound status
AH
=
82H: Input sound (from the microphone)
AH
=
83H: Output sound (to the speaker)
AH
=
84H: Stop sound input and output
Function Descriptions
Get Sound Status
Gets sound status.
Entry Conditions
AH
=
81H
Exit Conditions
Not Busy:
AX
=
OOC4H
CF
=
0
43.