Yamaha YMF724F specifications OPL3 Block, OPL3 Status Register RO

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YMF724F

2-1. OPL3 Block

OPL3 Block is register compatible with YMF289B. However, Power Management register has been deleted because it is now controlled by the PCI Configuration Register.

The following shows the FMBase I/O map of OPL3.

FMBase	(R)	Status Register port
FMBase	(W)	Address port for Register Array 0
FMBase+1	(R/W)	Data port
FMBase+2	(W)	Address port for Register Array 1
FMBase+3	(R/W)	Data port

The default FMBase value is 0x0388.

The following shows the OPL3 Block registers.

2-1-1. Status Register

OPL3 Status Register (RO):

Address

xxh

IRQ

FT1

FT2

BUSY

September 21, 1998

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Contents Overview FeaturesSensaura LogosGM system level YMF724F-V PIN ConfigurationYMF730AC-2 Interface 6-pin PIN DescriptionPCI Bus Interface 53-pin Legacy Device Interface 16-pin YMF727AC3F2 Interface 9-pinSpdif Interface 1-pin Miscellaneous 15-pin Power Supply 39-pinOPL3 Block DiagramDOS VM System DiagramFunction Overview PCI Bus CommandPCI Configuration Register 02 03h Device ID 04 05h Command00 01h Vendor ID 06 07h Status 09h Programming Interface 08h Revision ID0Ah Sub-class Code 0Bh Base Class Code10 13h PCI Audio Memory Base Address 0Dh Latency Timer0Eh Header Type 34h Capability Register Pointer 2C-2Dh Subsystem Vendor ID2E-2Fh Subsystem ID 3Dh Interrupt Pin 3Ch Interrupt Line3Eh Minimum Grant 3Fh Maximum Latency40 41h Legacy Audio Control B1311 ......MPUIRQ MPU401 IRQ Channel Select B76 ..........SDMA Sound Blaster DMA-8 Channel SelectB108 ........SBIRQ Sound Blaster IRQ Channel Select 42 43h Extended Legacy Audio Control B15..............IMOD Legacy IRQ mode B1211 ......SMOD SB DMA mode44-45h Subsystem Vendor ID Write Register B1413 ......SBVER SB Version Select48-49h DS-1 Control Register 4A-4Bh DS-1 Power Control Register46-47h Subsystem ID Write Register PSL0 Power Save Legacy Audio Block DPLL1 Disable PLL1 Clock OscillationPSL1 Power Save Legacy Audio Block PSN Power Save PCI Audio blockB1514 ......AC-2 Power down Control 6 B12..............PR4 AC-2 Power down ControlB13..............PR5 AC-2 Power down Control 50h Capability ID 4C-4Dh D-DMA Slave Configuration51h Next Item Pointer 52-53h Power Management Capabilities58-59h Acpi Mode 54-55h Power Management Control / StatusB10 ..........PS Power State B0................ACPI Acpi Mode SelectOPL3 ISA Compatible DevicePCI OPL3 Status Register RO OPL3 BlockOPL3 Data Register Array 1 R/W OPL3 Data Register Array 0 R/WSound Blaster Pro Block CMD Sound Blaster Pro Mixer SB Mixer AC-2 SE Scan Enable B0................SBPDR Sound Blaster Power Down RequestSM Scan Mode Sbpda Sound Blaster Power Down AcknowledgementF8h Interrupt Flag Register F1h Scan In/ Out DataB70 ..........SCAN Data B0................SBI SB Interrupt FlagJoystick MPU401PC/PCI DMA Emulation ProtocolDMA Serialized IRQ Interrupt RoutingDigital Audio Interface Hardware Volume Control Absolute Maximum Ratings Electrical CharacteristicsDC Characteristics Master Clock ResetPoint to Point Input Hold Time for Pciclk PCI InterfaceAC-link AC-2 / AC3F2 Master ClockInput Hold Time for Abclk AC3F2 InterfaceAC3F2 Control Interface timing OFF External DimensionsYamaha Corporation