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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 produc‐
     ing 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

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