ym2612.h File Reference

YM2612 support. More...

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Defines
#define	YM2612_BASEPORT   0xA04000
	YM2612 base port address.
Functions
void	YM2612_reset ()
	Reset YM2612 chip.
u8	YM2612_read (const u16 port)
	Read YM2612 port.
void	YM2612_write (const u16 port, const u8 data)
	Write YM2612 port.
void	YM2612_writeSafe (const u16 port, const u8 data)
void	YM2612_writeReg (const u16 part, const u8 reg, const u8 data)
	Set YM2612 register value.
void	YM2612_writeRegSafe (const u16 part, const u8 reg, const u8 data)
void	YM2612_enableDAC ()
	Enable YM2612 DAC.
void	YM2612_disableDAC ()
	Disable YM2612 DAC.

---

Detailed Description

YM2612 support.

Author:

Stephane Dallongeville

Date:

08/2011

This unit provides access to the YM2612 through the 68000 CPU.

---

Function Documentation

u8 YM2612_read

(

const u16

port

)

Read YM2612 port.

Parameters:

port	Port number (0-3)

Returns:

YM2612 port value.

Reading YM2612 always return YM2612 status (busy and timer flag) whatever is the port read.

void YM2612_write	(	const u16	port,
		const u8	data
	)

Write YM2612 port.

Parameters:

port	Port number (0-3)
data	Data to write

This function does not perform busy check before writing to YM port.
See also YM2612_writeSafe().

void YM2612_writeReg	(	const u16	part,
		const u8	reg,
		const u8	data
	)

Set YM2612 register value.

Parameters:

part	part number (0-1)
reg	register number
data	register value

This function does not perform busy check before writing to YM port.
See also YM2612_writeRegSafe().

void YM2612_writeRegSafe	(	const u16	part,
		const u8	reg,
		const u8	data
	)

Deprecated:

Use YM2612_writeReg(..) method instead.

void YM2612_writeSafe	(	const u16	port,
		const u8	data
	)

Deprecated:

Use YM2612_write(..) method instead.