GMC-OPM: OPM Module †
A module mounted with an OPM(YM2151) sound chip.
OPM is an eight-channel, four-operator FM sound chip.
It differs from the OPN series in that it has hardware LFO and the DT2 parameter.*1
These grant OPM a wider range of sound creating possibilities.
Features †
- Authentic YM2151, the FM LSI from YAMAHA used by SHARP X1*2 and X68000*3, as well as various arcade game systems and digital synthesizers.
- High clarity of sounds attained through abundant use of high quality components and extensive revision to the original board design of the 80s to meet the modern standard.
- Variable clock rate that can be set to anything within the module's operating frequency (3MHz-4MHz). This first-in-indie-hardware feature enables a highly faithful emulation of arcade game sound systems, whose clock rate is not always uniform.
Clock rate gets instantly adjusted at the start of each song.
3 MHz
4 MHz
- Ability to be remounted with another sound chip which is pin-compatible with OPM, such as YM2164 (OPP). The IC socket makes the replacement quite effortless.*4