Contents. OPL3-SA families. YMF701 (OPL3-SA): Incorporates OPL3 and OPL3-L features, 16-bit stereo CODEC, MPU-401-compatible MIDI interface, game port, Plug and Play ISA interface, Windows Sound System (CS4231) and Sound Blaster Pro compatibility. YMF711 (OPL3-SA2): Based on OPL3-SA, it adds Plug and Play ISA compatibility, 10-pin interface supports 16-bit port address decode (top 4 bits), EEPROM interface, Zoomed video port, CPU and DAC interface for OPL4-ML, modem interface, or IDE CD-ROM interface. YMF715 (OPL3-SA3): Based on OPL3-SA2, the OPL3-SA3 family adds 3D audio support via DirectSound3D and. DS-XG family. Another Yamaha XG sound card with YMF724E-V chipset.
The last model number for controller chips used on bus cards is 719; chips used on cards start at 720 and higher. Chips for PCI bus standalone adapters are marked YMF7x4, while on-board or embedded systems are marked YMF7x0. The DS-XG series features hardware-assisted synthesis with either 32- or 64-note, full-duplex playback and recording at any samplerate (internally upsampled to 48 kHz), external game controller and MIDI interface, and a legacy block for application support. The DS-XG family processors were used in many inexpensive (sub-$50) soundcards. Relative performance was good despite the typical low cost.
The cards were usually equipped with good quality 18-bit Digital-to-Analogue Converters, providing similar low noise and harmonic distortion levels to those found in semi-professional hardware. The XG synthesizer on the DS-XG series features not only basic XG System Level 1, but also some of the additions, and can reproduce most musical data previously programmed for the popular daughterboard.
YMF7x4 cards shipped with a 2 MB bank of 8-bit by default, which must be loaded into system during. Neither the resolution nor content of the sample bank are hardware limitations.
A user can load their own banks using third-party tools to further improve sound quality or completely change the set of instruments. As with most other XG standard tone generators, YMF7x4 can switch itself into TG300B mode, which is an of the standard that allows adequate playback of musical data bearing the GS logo. Legacy support includes an FM synthesizer, Pro (22 kHz 8-bit Stereo) emulation and compatible MIDI interface.
In addition to OPL3, DOS applications running under 9x/Me can also use the XG tone generator. All of these features are available using Yamaha's driver under Windows 9x/Me. Drivers for these operating systems and later Windows 2000/XP may lack important mixer controls, like separate Line-Out and 3D Wide. is not supported under -based OSes. The original version of the DS-XG chipset series is the YMF724. It is limited to two-channel output. It is followed by the YMF744 and its variants, which feature four-channel output.
The final and most advanced version of the YMF7x4 chipset series is the YMF754, which also features standard four-channel output, but adds lower power consumption features. The most soundcards based on the YMF754 are the Labway XWave 6000 (which has an additional hardware chip to emulate 5.1 surround sound and a six-channel amplifier providing 2W per channel) and the Hoontech SoundTrack i-Phone Digital XG (which features an additional connector for an included speech-optimized headset microphone as well as support circuitry that limits feedback in telephony applications). The DS-XG.vxd drivers under Windows 95, 98, 98SE or ME can switch to Sondius-XG which allows emulation of the VL70-m tone generator (except for the distortion block). Models. YMF724 (DS-1): First model using PCI bus.
Includes 64-voice wavetable synthesizer (total 73 concurrent audio streams supported), interface to AC'97 codec, S/PDIF output, Dolby AC-3 decoder. YMF738: Integrated Sensaura 3D audio, AC'97 2.1 interface. YMF740C (DS-1L): Based on YMF724, but includes only 32-voice wavetable synthesizer (total 41 concurrent audio streams supported).
It also lacks the S/PDIF and AC-3 interfaces in YMF724. YMF744B (DS-1S): PCI 2.2-compliant, fully 3.3V power processor based on YMF724, it adds support of, secondary AC '97 2.1 CODEC.
YMF754 (DS-1E): Based on YMF744, it adds simultaneous usage of ZV port and S/PDIF input, 2.5V power for core logic and PLL filter, mixing SPDIF input from mixer without prior sample rate conversion. AC-XG family The AC-XG family features codec. YMF725: AC'97 codec for use with YMF724. YMF743: AC'97 2.1 stereo codec. YMF752: AC'97 2.1 stereo codec with sample rate converter. YMF753: AC'97 2.2 stereo codec based on YMF743. References.