Othello Multivision¶

Overview¶

The Othello Multivision is an SG-1000 / SC-3000 compatible machine from Sega and Tsukuda Original. REG-Linux uses the multivision system group to keep its heritage aligned with SG-1000 titles.

Technical specifications¶

CPU: Zilog Z80A clocked at 3.58 MHz, the de facto standard of early 8-bit consoles.
Memory: 2 KB of system RAM with 16 KB of VRAM dedicated to tile and sprite data.
Display: TMS9918A-style video chip rendering 256×192 output with 16 colors and hardware sprites.
Sound: AY-3-8912 PSG offering three square-wave channels plus programmable noise.

Quick reference¶

ROM folder: /userdata/roms/multivision
Accepted ROM formats: .bin, .sg, .zip, .7z
Emulator/core: libretro: GenesisPlusGX
System group: multivision

BIOS¶

No BIOS files are required.

ROMs¶

Drop Multivision/SG-1000 ROMs into /userdata/roms/multivision. The same core handles related Sega 8-bit content.

Emulators¶

RetroArch¶

RetroArch runs the libretro: GenesisPlusGX core for Multivision titles. Standard SG-1000 options include sg1000.videomode, sg1000.ratio, sg1000.shaders, sg1000.pixel_perfect, sg1000.decoration, sg1000.game_translation, sg1000.audio_latency, and sg1000.video_threaded.

ES setting name	REG-Linux.conf_key	Description & values
GRAPHICS BACKEND	`sg1000.gfxbackend`	Choose OpenGL (`opengl`) or Vulkan (`vulkan`).
AUDIO LATENCY	`sg1000.audio_latency`	Buffer in milliseconds (256, 192, 128, 64, 32, 16, 8).
THREADED VIDEO	`sg1000.video_threaded`	Enable threaded rendering (`true`, `false`).

GenesisPlusGX shares the same options as listed in megadrive.md for sprite limits, controller types and NTSC filters.

Controls¶

Use the REG-Linux Retropad overlay for the default Multivision pad layout.