Copyright (c) 1996 The NetBSD Foundation, Inc.
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.Dd November 4, 1995 .Dt SB 4 .Os NetBSD .Sh NAME .Nm sb .Nd SoundBlaster family (and compatible) audio device driver .Sh SYNOPSIS .Cd "sb0 at isa? port 0x220 irq 5 drq 1" .Cd "sb1 at isa? port 0x240 irq 7 drq 1 flags 1" .Cd "sb2 at isapnp?" .Sh DESCRIPTION The .Nm driver provides support for the SoundBlaster, SoundBlaster Pro, SoundBlaster 16, Jazz 16, and hardware register-level compatible audio cards.
p The SoundBlaster series are half-duplex cards, capable of 8- and 16-bit audio sample recording and playback at rates up to 44.1kHz (depending on the particular model).
p The base I/O port address is usually jumper-selected to either 0x220 or 0x240 (newer cards may provide software configuration, but this driver does not directly support them--you must configure the card for its I/O addresses with other software). The SoundBlaster takes 16 I/O ports. For the SoundBlaster and SoundBlaster Pro, the IRQ and DRQ channels are jumper-selected. For the SoundBlaster 16, the IRQ and DRQ channels are set by this driver to the values specified in the config file. The IRQ must be selected from the set {5,7,9,10}.
p The configuration file must use 1 .Cm flags specification to enable the Jazz16 support. This is to avoid potential conflicts with other devices when probing the Jazz 16 because it requires use of extra I/O ports not in the base port range.
p The joystick interface (if enabled by a jumper) is handled by the .Xr joy 4 driver, and the optional SCSI CD-ROM interface is handled by the .Xr aic 4 driver. .Sh BUGS The 16 bit DMA channel is always channel 5. This is because there is currently no way to specify a second drq in the config file.
p The FM synthesizer, MIDI port, and non-SCSI CD-ROM interfaces are not supported. .Sh SEE ALSO .Xr aic 4 , .Xr audio 4 , .Xr joy 4 .Sh HISTORY The .Nm device driver appeared in .Nx 1.0 .
Indexes created Mon Oct 27 08:10:08 GMT 2025