OPL(4) | Device Drivers 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 producing 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.

January 3, 2009 | NetBSD 9.2