SND_MPU401_UART_NEW(9) MIDI API SND_MPU401_UART_NEW(9)NAME
snd_mpu401_uart_new - create an MPU401-UART instance
SYNOPSIS
int snd_mpu401_uart_new(struct snd_card * card, int device, unsigned short hardware, unsigned long port, unsigned int info_flags, int irq,
struct snd_rawmidi ** rrawmidi);
ARGUMENTS
card
the card instance
device
the device index, zero-based
hardware
the hardware type, MPU401_HW_XXXX
port
the base address of MPU401 port
info_flags
bitflags MPU401_INFO_XXX
irq
the ISA irq number, -1 if not to be allocated
rrawmidi
the pointer to store the new rawmidi instance
DESCRIPTION
Creates a new MPU-401 instance.
Note that the rawmidi instance is returned on the rrawmidi argument, not the mpu401 instance itself. To access to the mpu401 instance, cast
from rawmidi->private_data (with struct snd_mpu401 magic-cast).
RETURN
Zero if successful, or a negative error code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_MPU401_UART_NEW(9)
Check Out this Related Man Page
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
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