YMF715E

Hardware Volume Interrupt Channel Configuration (R/W):

Index

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17h

-

-

IRQ-B MV

IRQ-A MV

-

*

*

*

The Hardware Volume can source interrupt. This register indicates which interrupt channel will be used. If IRQ-A MV=“1”, assigned to IRQ-A.

default : 00h

Notice)

Writing to the other bit positions is invalid, though the bits remarked * (D2-D0) will retain written values. D3, D6 and D7 will always returns “0” when read.

Multi-purpose Select Pin Status (RO):

Index

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18h

”1”

SEL2

SEL1

SEL0

-

-

-

“0”

This is a status register that indicates the state of multi-purpose pin.

SEL2-0...The state of SEL2-0 pins is reflected to these bits. The multi-purpose function of YMF715E (OPL3-SA3) can be confirmed by reading the bits. These bits are read only.

default : (1xxx0000)b

9-2. Joystick

port

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

xxh

JBB2

JBB1

JAB2

JAB1

JBCY

JBCX

JACY

JACX

JACX... Joystick A, Coordinate X

JACY... Joystick A, Coordinate Y

JBCX... Joystick B, Coordinate X

JBCY... Joystick B, Coordinate Y

JAB1... Joystick A, Button 1

JAB2... Joystick A, Button 2

JBB1... Joystick B, Button 1

JBB2... Joystick B, Button 2

Notice)

The Joystick portion must be re-initialized by writing any value to the Joystick port after resuming from the power down/save or the Joystick portion power down mode.

9-3. MODEM

The following pins are for MODEM interface with PnP supported. /MCS... chip select (eight consecutive byte I/O)

MIRQ... interrupt signal

And MIN is the analog input to mix the telephone line.

MIN... analog input

May 21, 1997

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Yamaha OPL3-SA3 Joystick, Modem, Hardware Volume Interrupt Channel Configuration R/W, Multi-purpose Select Pin Status RO

OPL3-SA3 specifications

The Yamaha OPL3-SA3 is a highly regarded sound card known for its exceptional audio performance and versatility, capturing the interest of enthusiasts and professionals in the digital audio realm. As an advanced version of the popular OPL3 series, the OPL3-SA3 integrates cutting-edge technologies that enhance its sound generation capabilities, making it a sought-after component for both music production and gaming applications.

One of the key features of the Yamaha OPL3-SA3 is its use of the FM synthesis technology, which allows for the generation of rich, complex sounds that are particularly favored in electronic and video game music. The OPL3 architecture supports up to 18 channels of audio output, enabling the simultaneous playback of multiple sounds without compromising quality. This multichannel capability enhances its use in audio applications, where layering various sound elements is crucial.

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Another notable characteristic of the OPL3-SA3 is its compatibility with a wide range of operating systems, including DOS and Windows platforms, enhancing its accessibility for users of different systems. The card's drivers are designed for simplicity and reliability, ensuring that it can be easily integrated into existing audio setups.

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