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neo(4) [netbsd man page]

NEO(4)							   BSD Kernel Interfaces Manual 						    NEO(4)

NAME
neo -- NeoMagic MagicMedia 256 audio device driver SYNOPSIS
neo* at pci? dev ? function ? audio* at audiobus? DESCRIPTION
The neo driver provides support for the NeoMagic MagicMedia 256AV and 256ZX AC'97 audio devices, found on many laptops. The MagicMedia 256AV also comes in a variant (usually found on Dell and HP laptops) that works in Windows Sound System emulation mode, not in AC'97 mode. That variant of the chip must be used with the wss(4) driver. The neo driver will not attach to such chips. SEE ALSO
ac97(4), audio(4), intro(4), midi(4), pci(4), wss(4) HISTORY
The neo device driver appeared in NetBSD 1.5.1. BUGS
The MagicMedia 256 series is not well-documented. No MIDI or FM synthesizer capability is provided with the MagicMedia 256 in AC'97 mode. While those capabilities are provided by the Windows driver for the chip, they are emulated by the Windows driver, and not directly supported by the hardware. BSD
June 22, 2005 BSD

Check Out this Related Man Page

WSS(4)							   BSD Kernel Interfaces Manual 						    WSS(4)

NAME
wss -- Windows Sound System hardware audio driver SYNOPSIS
wss0 at isa? port 0x530 irq 10 drq 0 drq2 1 wss0 at isa? port 0x530 irq 10 drq 0 flags 1 wss* at acpi? wss* at isapnp? wss* at pnpbios? index ? audio* at audiobus? opl* at wss? DESCRIPTION
The wss driver supports Microsoft's Windows Sound System, the MAD16 chip based hardware, and their clones. The base I/O port is set by a jumper on the board; valid choices are 0x530, 0x604, 0xE80, or 0xF40. Both IRQ and DMA channels are software programmable. The IRQ may be set to 7, 9, 10, or 11, and the DMA channel may be set to 0, 1, or 3. The device flags must have bit 0 (value 1) set to enable the MAD16 support. This is to avoid potential conflicts with other devices when probing the MAD16 because it requires use of extra I/O ports not in the base port range. Chips needing this flag include the OPTi 82C928, 82C929, 82C831, and the OAK OTI-601D. Setting bit 1 (value 2) in flags disables the joystick port on MAD16 hardware. SEE ALSO
acpi(4), audio(4), isa(4), isapnp(4), joy(4), opl(4), pnpbios(4) BSD
June 22, 2005 BSD

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