Main article: The Didaktik was a series of home computers produced in Skalica, former, now. Later models compatible with ZX Spectrum were based on the. There were three main models of Didaktik ZX clones: First was Didaktik Gama (released in three variants 87, 88 and 89). Didaktik Gama has 80KB RAM comparing to original ZX spectrum.

Gama-series was soon followed by the Didaktik M (first variant released at 1990 second variant release at 1991), M contain much better keyboard and Sinclair and Kempston Joystick ports. Last ZX spectrum compatible model was Didaktik Kompakt (1991) which has integrated 3,5 Floppy disk mechanic and sound chipAY-3–8920 and still 48KB of RAM.

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Dubna 48K [ ]. Main article: A Soviet/Russian home computer, based on the Sinclair Research ZX Spectrum hardware architecture. It also featured a CP/M mode and mode or mode, with the Forth or LOGO operating environment residing in an on-board ROM chip. Inves Spectrum 48k plus [ ] A clone of the ZX Spectrum+ from Investronica in Spain. Released after bought. Looked much like a normal 48+.

It has compatibility problems with some games (,,, etc.). On the rear there was a Kempston joystick connector. JET [ ] A Romanian clone.

The casing was adapted from a telephone. Kay 1024 [ ]. Main article: The TK90X was the first ZX Spectrum clone made in 1985, by, a company located at, Brazil, that manufactured some clones before (TK82,, TK83 and ) and a clone (TK80). The ROM were hacked to allow an UDG editor and accented characters (incompatibility issues are very rare or none).

The keyboard membrane is more resistant than the original from ZX-Spectrum 48K (very similar to the actual PS2/USB keyboard we use now), and there is also a Sinclair-compatible joystick connector between expansion and mic/ear connectors. Microdigital TK95 [ ]. Main article: Peters MC64 [ ] A Russian ZX Spectrum clone from around 1993.

Size is 14 × 7.2 × 2 inches. The name suggest that it has 64 KB of RAM and was made by that went on to make the. Peters MC64S1 has Service monitor (additional ROM), fast loading in the RAM frequently used software. Assembler & monitor, test of a video and copyist for tape are included in first version Service monitor.

Peters MC64S2 has Service monitor 2, which included of, test of a video, copyist for tape and text editor. It has a printer slot. Peters 256 [ ] A Russian clone of the ZX Spectrum. Peters MD-256S3 has Service monitor 3, including an alternate (for TR-DOS) disk operational system IS-DOS.

Contents • • • • • • • • History [ ] The company started out as 'Spectrum Software' in 1983 selling arcade clones for various home computers including the ZX81, ZX Spectrum and VIC 20. Although not named after the ZX Spectrum, the name became confusing and was changed to Ocean Software.

Some of their Spectrum Software games were re-released on Ocean with different titles so the clone Frenzy was reissued as the Ocean game Robotics and Missile Attack became Armageddon. Their early releases ( Moon Alert,,, Gilligan's Gold, Daley Thompson's Decathlon etc.) were developed in-house, but later in 1984 Ocean Software acquired its former rival, the defunct software developer, and focus shifted from development to publication of games. Also in 1984, Ocean struck a deal with to publish their for home computers. In 1985, Ocean Software managed to secure the first movie licences, such as, and, as well as the TV show and which spent about a year on the top of the charts. In 1986, a deal was signed with and for home versions of their arcade games such as,,. Also in 1986, Ocean Software created with Marc DJAN Ocean Software France. This 16-bit studio would create most of the 16-bit arcade conversions between 1986 and 1991 then became the French marketing and sales subsidiary of Ocean Software Ltd.

In 1987, Ocean Software published original games again, after a marginal season filled with licences, resulting in,. Ocean was voted Best 8-bit Software House of the Year at the 1989, along with awards for their 8-bit and 16-bit conversions of Operation Wolf. In 1996, Ocean Software announced a merge with French publisher for £100 Million. After the merger Infogrames kept Ocean as a separate division publishing their own games. Ocean later acquired in 1998 [ ] and in the same year, Infogrames renamed Ocean Software to Infogrames United Kingdom Limited and Ocean's last titles would end up being published by Infogrames' European subsidiary,. Tape loaders [ ] One of the most recognisable features of Ocean games on the was the Ocean Loader.