The PC-98 architecture, developed by NEC, has been a dominant force in the Japanese PC market since its introduction in the late 1980s. The PC-98 core, also known as the PC-98 CPU core, is the central processing unit of the PC-98 architecture, responsible for executing instructions and managing data transfer. As the PC-98 architecture continues to evolve, it is essential to verify the correctness and functionality of the PC-98 core to ensure compatibility and reliability across various systems.
In the sprawling ecosystem of digital preservation, few platforms have garnered the reverence and technical rigor of the Mister FPGA project. Unlike software emulation, which translates code for a different processor, the Mister recreates the very hardware architecture of vintage computers using programmable logic. Among its most ambitious and culturally significant cores is the one dedicated to NEC’s PC-9800 series (PC98)—a line of Japanese computers that dominated the Japanese market for nearly two decades. When the community announces that the “Mister PC98 core has been verified,” it is not a simple bug-fix update. It is a formal declaration that a complex, living history project has reached a benchmark of accuracy and reliability, transforming a digital ghost into a stable time machine for one of computing’s most fascinating and insular eras.
Once the core is loaded, press F12 (or your assigned menu button) to open the menu. Here you can: Mount hard drive images. Swap floppy disks.
However, the landscape changed with the introduction of new, experimental PC cores on the MiSTer FPGA platform. As of mid-2026, the discussion around a "verified" or functional PC-98 experience on MiSTer revolves around emerging efforts to bring 80386-compatible CPU designs to the platform.
For users of the platform, achieving a "verified" or fully playable PC98 experience has been a long-held dream. Because FPGA hardware reproduction offers cycle-accurate gameplay free of software emulation stutter, it is the ultimate way to experience retro systems.
The PC-98 was Japan’s dominant personal computer line throughout the 1980s and 1990s. Boasting a massive library of visual novels, tactical RPGs, and iconic shoot-’em-ups (including the origins of the Touhou Project ), it relied on unique architecture, specialized sound chips, and high-resolution text modes.
If you own a MiSTer, this core is . It transforms a modern setup into a high-end 90s Japanese workstation. While there is a slight learning curve to understanding the BIOS and file structures, the payoff is the most authentic PC-98 experience available outside of owning a beige box from Tokyo.
Due to copyright laws, the system BIOS files are not included with the core. You will need to source and place the following files into your media/fat/games/PC98/ directory (naming conventions may vary slightly based on the core build): FONT.ROM (The essential Japanese font ROM) ITF.ROM SOUND.ROM 3. Configure Memory and CPU Speed
The is a significant achievement for retro computing enthusiasts, effectively bringing one of Japan’s most influential computer architectures—the NEC PC-9801/9821 series—to the MiSTer FPGA platform . After extensive development and community "verification" of its features, it stands as the gold standard for experiencing this library without original hardware. Performance & Compatibility
The core supports 16 megabytes of RAM and achieves roughly
A handful of games using specific 640x400 interlaced modes (rare doujin soft) still show minor flicker, but the core maintainer has flagged a fix for the next release.
: Unlike software emulators, this core attempts to replicate the 8086/v30 architecture at a logic gate level, which is crucial for the PC-98’s unique high-resolution text and distinct Yamaha FM sound chips
The verified core handles almost all titles, including Touhou games, Policenauts , YU-NO , Star Trader , Rusty , and various Dragon Knight games. Does the Core Support Save States?
