diff options
Diffstat (limited to 'sound/fmopl.cpp')
| -rw-r--r-- | sound/fmopl.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/fmopl.cpp b/sound/fmopl.cpp index f8f6b97fcc..8fdddc20f8 100644 --- a/sound/fmopl.cpp +++ b/sound/fmopl.cpp @@ -39,6 +39,12 @@ enum OplEmulator { kDOSBox = 2 }; +OPL::OPL() { + if (_hasInstance) + error("There are multiple OPL output instances running."); + _hasInstance = true; +} + const Config::EmulatorDescription Config::_drivers[] = { { "auto", "<default>", kAuto, kFlagOpl2 | kFlagDualOpl2 | kFlagOpl3 }, { "mame", "MAME OPL emulator", kMame, kFlagOpl2 }, |