zx_go

About

zx_go is a free, MIT-licensed Go emulator for Sinclair 8-bit computers, including the ZX80, ZX81, classic ZX Spectrum models, Pentagon, SAM Coupé and Spectrum Next. It runs on Linux, macOS and Windows, with pre-built x64 and ARM64 binaries; Windows ARM64 is marked experimental. The project describes its classic-machine emulation as mature and stable, with cycle-accurate Z80 emulation and memory and port contention. Spectrum Next mode cold-boots into NextZXOS and implements custom hardware including Layer 2, sprites, tilemap, Copper, MMU and multiple clocks. Compatibility with Next games is still developing: some titles work, others have bugs, and many are unverified. Supported media includes tape, snapshot, disk, microdrive, NEX and RZX files, with load and save support varying by format. Emulated peripherals include disk interfaces, mouse, printer and joysticks; sound includes beeper, AY, DACs and Next audio. Debugging tools include visual and scriptable telnet debuggers, plus headless tracing and instrumentation. Reverse debugging cannot show memory, and rewind does not capture a +D or Opus Discovery controller. Next mode requires licensed ROMs that are not bundled.

Who it is for

zx_go suits users of Sinclair 8-bit systems who want to run classic machines or explore Spectrum Next emulation. Developers can also use its visual, telnet and headless debugging tools.

Compared on ZX spectrum emulators

Host platforms

Windows, macOS, Linuxgithub.com

Tape formats

.tap, .tzxgithub.com

Snapshot formats

.sna, .z80, .szxgithub.com

Built-in debugger

Yesgithub.com

Open source

Yesgithub.com

Peripheral support

+3 FDC, Beta Disk, Opus Discovery, Interface 1/2, DISCiPLE, Multiface, Kempston mouse, ZX Printer, joysticksgithub.com

Facts

Purpose

zx_go is a Go emulator for the Sinclair ZX80, ZX81, classic ZX Spectrum models, Pentagon, SAM Coupé, and Spectrum Next.github.com · 5 Oct 2026

Classic emulation

The project describes its classic machines as mature and stable, with cycle-accurate Z80 emulation and memory and port contention.github.com · 5 Oct 2026

Spectrum Next status

The Spectrum Next cold-boots into NextZXOS, while arbitrary .NEX game compatibility is described as young and incomplete.github.com · 5 Oct 2026

Media formats

Supported formats include SNA, Z80, SZX, TAP, TZX, multiple disk formats, MDR, NEX, and RZX recordings.github.com · 5 Oct 2026

Peripherals and sound

Emulated peripherals include +3 FDC, Beta Disk, Opus Discovery, Interface 1 and 2, DISCiPLE, Multiface, Kempston mouse, ZX Printer, and joystick schemes; sound includes beeper, AY, DACs, and Next audio.github.com · 5 Oct 2026

Debugging

It provides a visual debugger, a scriptable telnet debugger, and headless tracing and instrumentation.github.com · 5 Oct 2026

Debugging limit

Reverse debugging cannot show memory, and rewind does not yet capture a +D or Opus Discovery controller.github.com · 5 Oct 2026

Operating systems

Pre-built binaries are listed for macOS, Windows, and Linux, including x64 and ARM64 variants, with Windows ARM64 marked experimental.github.com · 5 Oct 2026

Build requirements

Building from source requires Go 1.25 or later, a C compiler, and OpenGL libraries.github.com · 5 Oct 2026

Next ROMs

The Spectrum Next requires licensed system ROMs that are not bundled; the program offers to download them from the official Spectrum Next distribution.github.com · 5 Oct 2026

License

The project is MIT licensed; its embedded FPGA loader is GPLv3, and NextZXOS system ROMs have separate licensing.github.com · 5 Oct 2026

Support and project status

The README asks users to report Next game problems through GitHub issues and describes the classic line as the mature, day-to-day-usable part of the emulator.github.com · 5 Oct 2026

What it does

zx_go is a Go emulator for Sinclair 8-bit computers, including ZX80, ZX81, classic ZX Spectrum models, Pentagon, SAM Coupé, and Spectrum Next.github.com · 5 Oct 2026

Spectrum Next

The emulator cold-boots the Spectrum Next through its FPGA boot chain into NextZXOS and implements custom hardware including Layer 2, sprites, tilemap, Copper, MMU, and multiple clocks.github.com · 5 Oct 2026

Formats

Supported media include SNA, Z80, SZX, TAP, TZX, several disk formats, microdrive MDR, NEX, and RZX files, with load and save support varying by format.github.com · 5 Oct 2026

Sound and peripherals

Emulated sound includes the ULA beeper, AY, Turbosound, SpecDrum, Covox, and Next DAC; listed peripherals include disk interfaces, microdrive, mouse, printer, and joysticks.github.com · 5 Oct 2026

Compatibility status

The maker says Spectrum Next game compatibility is still developing: some titles are playable, others have bugs, and many are unverified.github.com · 5 Oct 2026

Downloads

Pre-built binaries are listed for macOS on Apple Silicon and Intel, Windows x64 and experimental ARM64, and Linux x64 and ARM64.github.com · 5 Oct 2026

Requirements

Building from source requires Go 1.25 or later, a C compiler, and OpenGL libraries.github.com · 5 Oct 2026

Next ROM requirement

Spectrum Next mode requires two licensed ROMs and SD-card content; the maker says the ROMs are not bundled and the app can download them from the official Spectrum Next distribution.github.com · 5 Oct 2026

Support

The README asks users to open a GitHub issue when a Spectrum Next game misbehaves and links to a user manual and troubleshooting documentation.github.com · 5 Oct 2026

Where it ranks on Inferse

• Best ZX Spectrum Emulators in 2026#2 of 21

Sources

• github.com/conorarmstrong/zx_go· checked 5 Oct 2026