Games that played General MIDI tracks on the MT-32 initialized the MT-32's sound bank to approximate the General MIDI Level 1 (GM1) specification, but avoided any of the MT-32's hallmark music-synthesis features, adhering to GM1's rather limited set of controllers. Due to the popularity of the MT-32 as a music playback device for computer games, many modern sound cards provide a simple "MT-32 emulation mode", usually realized by way of a sound mapping comprised either of General MIDI instruments rearranged to roughly represent the MT-32's preset sound bank, or of samples directly recorded from the original unit. Results are often considered poor, as the sampling technology used can not reflect the pitch- and time-variable characteristics of the original synthesizer technology, with the programming of custom sounds (see above) not being supported at all. One exception is the Orchid SoundWave 32 card released by Orchid Technology in 1994, whose on-board digital signal processor (DSP) allowed for a more faithful reproduction of the original sound characteristics. More recently, there have been attempts at emulating the LA synthesizer technology in software using images of the original PCM and control ROMs. The most notable of these emulators is the open-source project Munt, which emulates the MT-32 hardware by way of a virtual device driver for Microsoft Windows, or a virtual MIDI device for OS X, BSD and Linux. It is also incorporated into ScummVM, an open-source adventure game interpreter, as of version 0.7.0. Munt is based on an earlier MT-32 Emulation Project, which was the source of a short-lived legal argument over distribution of the original ROM images with Roland Corporation, who manufactured the MT-32 and claims copyright on the ROM's data. Roland offers emulation of classic synthesizers via the Roland Cloud subscription service. Support for the D-50 was notably added in June 2017.