Didaktik Gama

It was manufactured from 1987 to 1990 by Didaktik Skalica. The computer was inspired by or was successor to ZX Spectrum. Hardware is based on U880D @ 3,5MHz, 80kB RAM.

Parts of this topic may be machine translated.

The ULA circuit is a Ferranti ULA6C001E; a UB880D processor overclocked to 3.5MHz or various Z80 variants were commonly used.

Version

• Didaktik Gama '87: untreated memory page switching
• Didaktik Gama '88: fixed pagination error of version '87
• Didaktik Gama '89: bug fixes '88 and new print routine

ROM

CRC32

291CAFED Didaktik Gama 1987

4ec7e078 Didaktik Gama 1988

45c29401 Didaktik Gama 1989

Power connector

DIN5

• 1 stabilized voltage +5V
• 2 GND
• 3 input mgf
• 4 unstabilized voltages (approx. 18V, from which Gamma makes +12V)
• 5 output mgf

Didactik Gama 192k

Didaktik Gama 192k is a project by Petr Valeček (CSS), whose goal was to turn the then more easily available Didaktik Gama 80k '89 into a ZX Spectrum 128-compatible computer in the Didaktik Gama cabinet.

Computers derived from Didaktik Gama

The following computers were inspired by or derived from Didaktik Gama:

• Didaktik M (Didaktik Skalica)

References

• https://cs.wikipedia.org/wiki/Didaktik_Gama (WebArchive)
• https://www.retrobajty.cz/didaktik-gama-80kb/ (WebArchive)
• https://www.root.cz/clanky/didaktik-gama-didaktik-m-a-didaktik-kompakt/ (WebArchive)
• https://cygnus.speccy.cz/popis_prestavba_didaktik-gama-192k.php (WebArchive)
• https://bruxy.regnet.cz/web/8bit/CZ/jeste-jednou-didaktik-gama/ (WebArchive)
• https://z00m.speccy.cz/images/didaktik-gama88.png (WebArchive)
• https://z00m.speccy.cz/images/didaktik-gama89.png (WebArchive)
• https://z00m.speccy.cz/images/didaktik-gama89-clock.png (WebArchive)