Hungary's
8-Bit Pioneer
Experience the PRIMO, a rare home computer, faithfully recreated in your browser. Powered by Go and Ebitengine.
System Specs
Emulator Features
Authentic Emulation
Cycle-accurate Z80 CPU emulation based on the robust koron-go/z80 library.
Experience the exact timing and quirks of the original hardware.
Tape Loading
Full support for PTP tape files. Load original software and demos directly from the web interface or your local file system.
Modern Convenience
Includes quality-of-life features like variable CPU frequency (Turbo Mode), integer scaling, and a virtual on-screen keyboard.
Primo History
The PRIMO is a true 8-bit rarity. Developed in 1984 by SZTAKI and manufactured by an agricultural cooperative in Sárisáp, it was a bold attempt to bring home computing to Hungary. Powered by a Z80-compatible U880 processor running at 3.75 MHz, it offered a unique architecture with 256x192 monochrome graphics.
Perhaps its most iconic feature was the capacitive touch keyboard of the 'A' series, which gave the machine its distinctive look and feel. Later 'B' models adopted mechanical keys, and a 'Pro' version even added color. Sound was minimal, provided by a 1-bit speaker affectionately known in the manual as the "duda" (horn).
With only about 7,000 units ever produced, the PRIMO is a collector's gem. PrimGO faithfully emulates this hardware, from the CPU timing to the monochrome display, preserving this slice of history for a new generation.
