Sunrise MoonSound
This page was last modified 14:14, 22 June 2019 by Grauw.



The MoonSound is the original OPL4 cartridge distributed by Sunrise.

Different versions of the MoonSound were made. Also the output connector in this first series is on a different place; on top of the cartridge. In version 2 the output connector is on the right side of the cartridge.

MoonSound version 1 has 128kB SRAM (1 socket) and version 2 a socket for a second SRAM IC. This can either be a 128kB SRAM chip (Part number: SONY CXK581000AP, Memory Capacity: 1M-bit, Function: (128k × 8-bit) LL, Access: 70 ns, Pins: 32, Package: DIP) or a 512kB SRAM chip (Part number: HITACHI HM628512LP-7, Memory Capacity: 4M-bit, Access: 70 ns, Pins: 32, Package: DIP).

The MoonSound comes with a cable (mini jack to 2 × cinch; stereo) to connect it to an amplifier. Also a black & white manual and the Moonblaster software is included.


  • Yamaha YMF278B OPL4 sound chip
  • Yamaha YAC513 DAC
  • 128 kB to 1024 kB SRAM
  • Yamaha YRW-801 ROM
  • External stereo audio output (TRS 3.5mm jack)

See OPL4 page for more specifications.


MoonSound cartridge
MoonSound v1.0 PCB
MoonSound v2.0 PCB