opl(4) [netbsd man page]

OPL(4)							   BSD Kernel Interfaces Manual 						    OPL(4)

NAME

     opl -- Yamaha OPL2 and OPL3 FM MIDI synthesizer driver

SYNOPSIS

     opl*  at cmpci? flags 1
     opl*  at eso?
     opl*  at ess?
     opl*  at fms?
     opl0  at isa? port 0x388
     opl*  at sb?
     opl*  at sv?
     opl*  at wss?
     opl*  at yds?
     opl*  at ym?
     midi* at opl?

DESCRIPTION

     The opl driver provides support for the Yamaha OPL2 (YM3812) and OPL3 (YMF262) chips.  The chips are FM synthesizers and are capable of pro-
     ducing a wide range of sounds.

     Access to the device is through the MIDI driver.

     The opl driver usually attaches to a sound card, but it can also sit directly on the ISA bus.

     If ``flags 1'' is specified, the opl driver handles left and right channels of OPL3 swapped.  Use this flag if your device has such problem.

SEE ALSO

     cmpci(4), eso(4), ess(4), fms(4), isa(4), midi(4), sb(4), sv(4), wss(4), yds(4), ym(4)

HISTORY

     The opl device driver appeared in NetBSD 1.4.

BUGS

     The OPL3 chip is operated in OPL2 mode despite being more capable.

BSD
								  January 3, 2009							       BSD

ESS(4)							   BSD Kernel Interfaces Manual 						    ESS(4)

NAME

     ess -- ESS Technology AudioDrive family audio device driver

SYNOPSIS

     ess*   at isapnp?
     ess*   at pnpbios? index ?
     ess*   at ofisa?
     audio* at audiobus?
     opl*   at ess?

DESCRIPTION

     The ess driver provides support for the ESS 1788, 1888, 1887, and 888 AudioDrive audio devices.

     The AudioDrive 1788 is a half-duplex device, while the 1888, 1887, and 888 are full-duplex. All are capable of 8- and 16-bit audio sample
     recording and playback at rates up to 44.1kHz.

     The AudioDrive takes 16 I/O ports. The I/O port range, IRQ, and DRQ channels are set by the driver to the values specified in the configura-
     tion file (or for isapnp, pnpbios, or ofisa, the values assigned from the firmware).  The I/O port base must be one of 0x220, 0x230, 0x240,
     0x250. The IRQ must be one of 5, 7, 9, 10 (or 15 on the 1887 only). The first DRQ channel must be selected from 0, 1, 3. The second DRQ chan-
     nel (used for playback by the full-duplex 1888/1887, ignored by the 1788) can additionally be set to 5. If both DRQ channels are used they
     must be different.

     The joystick interface (if enabled) is handled by the joy(4) driver.

SEE ALSO

     audio(4), isapnp(4), joy(4), ofisa(4), opl(4), pnpbios(4)

HISTORY

     The ess device driver appeared in NetBSD 1.4.

BUGS

     The AudioDrive devices have a SoundBlaster compatibility mode, and may be detected by the SoundBlaster driver (see sb(4)) rather than the
     AudioDrive driver. The workaround is to remove the SoundBlaster driver from the kernel configuration.

BSD
								   June 22, 2005							       BSD