Développé par Mike Wynne, il s’agit d’un émulateur Sinclair ZX81, Sinclair ZX80, Sinclair ZX Spectrum 16k/48k, Sinclair ZX Spectrum 128k, Amstrad/Sinclair Spectrum +2, Amstrad/Sinclair Spectrum +2a, Amstrad/Sinclair Spectrum +3, Timex TS1000, Timex TS1500, Timex TS2068, Timex TC2048, Lambda 8300, Ringo R470, MicroDigital TK85 et Jupiter ACE.
Version 1.2 – 30/11/2015 (by Paul Farrow)
* Bug fixes to:
 – Words were incorrectly displayed for the stack in debugging window
 – Labels no longer displayed for read, write, input and output breakpoints
 – Writing to Chroma QS Character RAM ignored unless QS Character mode enabled
 – Last IO accesses
* Alteration to Memory Window scrolling
Version 1.1 – 25/11/2015
ZXpand emulation source code lost: http://www.sinclairzxworld.com/viewtopic.php?f=3&t=1477
* Reconstructed ZXpand support (by SirMorris)
* Added support for (by Paul Farrow):
 – Chroma colour interface (see www.fruitcake.plus.com for details of the interface)
 – Spectra colour interface (see www.fruitcake.plus.com for details of the interface)
 – IF2, ZXC2, ZXC3, ZXC4 ROM cartridges (details available at www.fruitcake.plus.com)
 – P81 file format
* Bug fixes to (by Paul Farrow):
 – Jupiter Ace file save
 – Loading multiple ZX80 files
 – T81 file support for ZX80
 – Breakpoint at $0000 can now be hit upon a reset
 – Corrected disassembly mnemonics
 – Resolved lock up when reaching the end of playing a wav file
 – Lambda colour scheme sequence
 – QS Character Board memory size
 – Non-existent memory access
 – ComPort component updated
* Enhancements to debugger window (by Paul Farrow):
 – Controls for breakpoints on memory and IO reads and writes
 – Displays last accessed IO ports
 – Displays Spectra, Chroma and ZXC status modes
 – Increased history storage to 2000 instructions (was 1000)