mpu(4) [netbsd man page]

MPU(4)							   BSD Kernel Interfaces Manual 						    MPU(4)

NAME

     mpu -- Roland MPU401 (and compatible) MIDI UART driver

SYNOPSIS

     mpu*  at acpi?
     mpu*  at eso?
     mpu*  at fms?
     mpu*  at isa? port 0x330 irq 9
     mpu*  at sb?
     mpu*  at ym?
     mpu*  at yds?
     midi* at mpu?

DESCRIPTION

     The mpu driver provides support for the Roland MPU401 (and compatible) MIDI UART cards.

     Access to the device is through the MIDI driver.

SEE ALSO

     eso(4), fms(4), isa(4), midi(4), sb(4), yds(4), ym(4)

HISTORY

     The mpu device driver appeared in NetBSD 1.5.

BSD
								 December 2, 2004							       BSD

SB(4)							   BSD Kernel Interfaces Manual 						     SB(4)

NAME

     sb -- SoundBlaster family (and compatible) audio device driver

SYNOPSIS

     sb0    at isa? port 0x220 irq 5 drq 1 drq2 5
     sb1    at isa? port 0x240 irq 7 drq 1 flags 1
     sb*    at isapnp?
     sb*    at pnpbios? index ?
     audio* at audiobus?
     midi*  at sb?
     mpu*   at sb?
     opl*   at sb?

DESCRIPTION

     The sb driver provides support for the SoundBlaster, SoundBlaster Pro, SoundBlaster 16, Jazz 16, SoundBlaster AWE 32, SoundBlaster AWE 64,
     and hardware register-level compatible audio cards.

     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).

     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}.

     The configuration file must use 1 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.

     With a SoundBlaster 16 card the device is full duplex, but it can only sensibly handle a precision of 8 bits.  It does so by extending the
     output 8 bit samples to 16 bits and using the 8 bit DMA channel for input and the 16 bit channel for output.

     The joystick interface (if enabled by a jumper) is handled by the joy(4) driver, and the optional SCSI CD-ROM interface is handled by the
     aic(4) driver.

     SoundBlaster 16 cards have MPU401 emulation and can use the mpu attachment, older cards have a different way to generate MIDI and has a midi
     device attached directly to the sb.

SEE ALSO

     aic(4), audio(4), isa(4), isapnp(4), joy(4), midi(4), mpu(4), opl(4), pnpbios(4)

HISTORY

     The sb device driver appeared in NetBSD 1.0.

BUGS

     Non-SCSI CD-ROM interfaces are not supported.

     The MIDI interface on the SB hardware is braindead, and the driver needs to busy wait while writing MIDI data.  This will consume a lot of
     system time.

BSD
								   June 22, 2005							       BSD