60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
|
/***************************************************************************
|
||
|
|
*
|
||
|
|
* mixer.h
|
||
|
|
*
|
||
|
|
* Copyright (c) 1991-1996 Microsoft Corporation. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* This code provides VDD support for SB 2.0 sound output, specifically:
|
||
|
|
* Mixer Chip CT1335 (not strictly part of SB 2.0, but apps seem to like it)
|
||
|
|
*
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
*
|
||
|
|
* #defines
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Mixer Ports
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define MIXER_ADDRESS 0x04 // Mixer address port
|
||
|
|
#define MIXER_DATA 0x05 // Mixer data port
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Mixer Commands
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define MIXER_RESET 0x00 // reset mixer to initial state
|
||
|
|
#define MIXER_MASTER_VOLUME 0x02 // set master volume
|
||
|
|
#define MIXER_FM_VOLUME 0x06 // set opl2 volume
|
||
|
|
#define MIXER_CD_VOLUME 0x08 // set cd volume
|
||
|
|
#define MIXER_VOICE_VOLUME 0x0A // set wave volume
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
*
|
||
|
|
* Function Prototypes
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
void ResetMixer(void);
|
||
|
|
void MixerSetMasterVolume(BYTE level);
|
||
|
|
void MixerSetVoiceVolume(BYTE level);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
MixerDataRead(
|
||
|
|
BYTE *pData
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
MixerDataWrite(
|
||
|
|
BYTE data
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
MixerAddrWrite(
|
||
|
|
BYTE data
|
||
|
|
);
|