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Get the latest files - including fileserver software so you can share files from your PC to the Spectrum - from the downloads section:

  • Downloads - PC software, ROM images, utilities etc.

Latest News

The Spectranet has reached "general availability"! Currently, Ben Versteeg of Byte Delight is building and selling the Spectranet. There is also a Facebook group run by Ben Spectranet Facebook group. Ben's YouTube channel (linked from his site) also has a bunch of interesting videos, including the pick-and-place assembly machine used to build the boards.

Additionally you may find stock at RWAP Software (who also sells other useful items like replacement keyboard membranes), who sold the Spectranets assembled from around 2014 to 2016.

2022-06-04: Make a Chip Pro, an FPGA board for the Spectrum is under development.

2020-02-21: By popular demand, project sources etc. are now available on Github: see .

Latest Spectranet firmware: R600 (released 30th November 2020)

Speccytools: Development tools that use the Spectranet - debugging tools, emulators etc.

Spectranet TNFS resources index: (source code: )

Spectrum Channels Protocol API: A new way of building internet-enabled software for the Spectrum, by desertkun: see

TNFS server updated: Get it from the Downloads section (released 28th May 2013)

New! ZX SPI - an SPI interface written in Verilog for the ZX Breakout.

See the news blog for more.

Project Info

  • Make a Chip Pro - FPGA add-on for the Spectrum, like the ZX Breakout but with more stuff. For the Spectrum's 40th anniversary!
  • ZX Breakout - Provides ZX bus signals on a header, and a CPLD for logic functions. Also allows 3.3v devices to be used with the Spectrum.
    • ZX SPI - An SPI interface for the ZX Breakout allowing the Spectrum to become an SPI master.
  • Spectranet - The Spectrum ethernet card - make your Spectrum talk to the world.
  • Diagnostics - A simple diagnostics card - assists in fixing broken machines.


The software tools used for all of these projects are:

Gerber files and PostScript files will also be available, so if you don't want to edit the PCB layouts or schematics, you can produce the phototools/toner transfer sheets without needing them. You will need at least the Impact part of ISE to program a CPLD. Programming hardware can be as simple as a parallel cable since Xilinx CPLDs are programmed via JTAG rather than some byzantine high voltage programming method.