Ares Emulator Gains Dendy Region Support, Improves GBA Input Handling

The most popular game console in post-Soviet Russia finally gained dedicated region support in a major accuracy-focused emulator. Ares published a Git build on April 8 that added Dendy region support alongside a meaningful Game Boy Advance input fix, two incremental but substantive accuracy improvements for a project whose entire identity is built on getting hardware behavior exactly right.

The Dendy (Де́нди) was a Taiwanese Famicom clone manufactured with UMC chipsets and distributed across Russia by the Steepler company starting in late 1992. Because Nintendo never released an officially licensed NES in the former USSR, the Dendy became the dominant home console of its era in the region, with cultural weight equivalent to the NES in North America. Steepler sold 1 million units by mid-1994 and was moving 100,000 to 125,000 additional consoles per month at around $30 to $35 each, down from its original 39,000-ruble (~$94) launch price. The console's elephant logo was designed by Russian animator Ivan Maksimov.

The Dendy does not map cleanly onto either NTSC or PAL NES hardware. Its CPU, a UA6527P running at 1.773447 MHz, is Ricoh 2A03-compatible, and its PPU is a UA6538, both manufactured by UMC. Without dedicated Dendy region support, ROM dumps targeting this hardware boot incorrectly or exhibit wrong timing behavior. Most Dendy software consisted of bootlegs, multicarts, and unlicensed NES copies, often with altered sprites or maps, a historically significant segment of post-Soviet gaming culture that mainstream emulators had long underserved.

The April 8 build also addressed a nuanced GBA accuracy issue: ares now re-triggers the keypad IRQ when input changes occur. The GBA's interrupt system is edge-triggered, meaning interrupts fire on signal transitions rather than sustained states. As mGBA's developer has documented, "interrupt timing is far more complex than previously believed" on Game Boy hardware, with incorrect IRQ handling cited as the cause of crashes in Pokémon Pinball. The ares GBA core is currently slower and less precise than the dedicated mGBA emulator, making this IRQ fix meaningful incremental progress on a core still gaining accuracy ground.

Ares traces its lineage to bsnes, a Super Famicom emulator that programmer Near (born David Kirk Ginder, February 22, 1983) began developing on October 14, 2004. The trigger was translation bugs in Der Langrisser visible only on original hardware, establishing an accuracy-over-speed philosophy that persists in ares today. Near's subsequent higan project became the first emulator to reach 100% Super Nintendo library compatibility, and its components were used in 2017 to emulate the text-to-speech computer used by physicist Stephen Hawking as the original hardware wore out. Near died by suicide in Tokyo on June 27, 2021; ares has continued under community maintainership since. The name itself is an homage to the protagonist of Near's favorite game, Lunar: The Silver Star.

The April 8 snapshot followed ares v147, the stable release from December 23, 2025. A GitHub nightly build dated April 9 serves as the closest public artifact and drew 20 community reactions, characteristic of the quiet, accuracy-focused audience ares attracts. The emulator currently achieves 100% WonderSwan game compatibility and exceeds 95% on both Sega 32X and Sega CD titles, with its SNES core, derived from bsnes, still considered the most accurate available for that system.

For preservationists working with post-Soviet ROM collections, the Dendy addition represents something genuinely new: hardware-accurate treatment of a console that shaped a generation of Eastern European gaming and had previously received almost no dedicated emulation attention in any major open-source project.