A developer building a PC Engine emulator has published a detailed technical breakdown of the console's processor, revealing why this 1987 machine occupies an unusual niche in gaming history. Marketed as the "TurboGrafx-16" in North America, the console actually runs on an 8-bit CPU—not the 16-bit architecture found in the Genesis or SNES it competed against.

The HuC6280, designed by Hudson Soft, is based on the 65C02 but runs at surprisingly high clock speeds. At its peak frequency of 7.16 MHz, it's roughly twice as fast as the SNES CPU and compares favorably to the Genesis' 7.67 MHz 68000. The chip also includes a built-in MMU expanding addressable memory from 16-bit to 21-bit (2 MB), plus integrated PSG sound and a hardware timer.

The PC Engine sold well in Japan but couldn't crack the North American market against Sega and Nintendo, never officially releasing in Europe. Its lasting legacy: being the first console to support CD-based games via the CD-ROM2 add-on. Games had only 8 KB of working RAM to work with, though the CD expansion added significantly more.