You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.6 KiB
64 lines
1.6 KiB
/***************************************************************************
|
|
*
|
|
* fm.h
|
|
*
|
|
* Copyright (c) 1991-1996 Microsoft Corporation. All Rights Reserved.
|
|
*
|
|
* This code provides VDD support for SB 2.0 sound output, specifically:
|
|
* FM Chip OPL2 (a.k.a. Adlib)
|
|
*
|
|
***************************************************************************/
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* #defines
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* OPL2/Adlib Ports
|
|
*/
|
|
|
|
#define ADLIB_REGISTER_SELECT_PORT 0x388 // select the register to write data
|
|
#define ADLIB_STATUS_PORT 0x388 // read to determine opl2 status
|
|
#define ADLIB_DATA_PORT 0x389 // write data port
|
|
|
|
/*
|
|
* FM information
|
|
*/
|
|
|
|
#define AD_MASK 0x04 // adlib register used to control opl2
|
|
#define AD_NEW 0x105 // used to determine if app entering opl3 mode
|
|
#define BATCH_SIZE 40 // how much data is batched to opl2
|
|
|
|
typedef struct { // structure written to fm device
|
|
unsigned short IoPort;
|
|
unsigned short PortData;
|
|
} SYNTH_DATA, *PSYNTH_DATA;
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Function Prototypes
|
|
*
|
|
*****************************************************************************/
|
|
|
|
void ResetFM(void);
|
|
BOOL OpenFMDevice(void);
|
|
void CloseFMDevice(void);
|
|
BOOL FMPortWrite(void);
|
|
|
|
VOID
|
|
FMDataWrite(
|
|
BYTE data
|
|
);
|
|
|
|
VOID
|
|
FMRegisterSelect(
|
|
BYTE data
|
|
);
|
|
|
|
VOID
|
|
FMStatusRead(
|
|
BYTE *data
|
|
);
|