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1. #Creating the sinclair zx spectrum vega how to
2. #Creating the sinclair zx spectrum vega series
3. #Creating the sinclair zx spectrum vega tv

#Creating the sinclair zx spectrum vega series

The top data density was often hit and miss, very good magnetic tape had to be used and a special monophonic cassette recorder could be bought separately for best results.Ī series of ZX Spectrum clones was manufactured in Romania from 1985 to 1994, by ICE Felix. The modified version designed to work with the 3 data densities on the tape of up to 3 times higher than the original and the 2K ROM was also capable of loading and saving at those speeds using the whole 64K as storage. It was only 2 KB and the Sinclair BASIC or a modified version could be loaded from the tape. The first one had a particularly low quality EEPROM which was losing the data very fast. The power supply is the size and weight of a couple of bricks including a huge transformer unlike the now-standard switching power supply. Only one set of 8× 1-bit 64 KB RAMs present. The ROM is original Sinclair, although instead of the Sinclair copyright message, it states 'BASIC S'. A nicely built PCB with 45 chips (most 74-family) inside. The keyboard looks nice, but the key switches are very simple and therefore so is the 'feeling'. It is called 'Calculator pentru Instruire Personală' which means 'computer for personal teaching'. CIP and CIP-03Ī Romanian ZX Spectrum clone made by Intreprinderea Electronica. The Sparrow offers a bigger ROM (switchable per 16 KB, by a switch or a jumper).Ī ZX Spectrum clone built in Braşov, Romania. Also a power supply part was completely changed and improved.

#Creating the sinclair zx spectrum vega tv

A TV modulator has been dropped and replaced by a video signal. In addition to the use of the original ULA chip, this clone was heavily modernized, replacing part of the larger glue logic with one CPLD chip, a whole main memory with one SRAM chip and all 8 video memory chips with a second SRAM. Developments were completed and production began in 2013. The first clone of the ZX Spectrum, which was designed to replace original motherboards in standard and Spectrum+ cases. As the Mistrum was an amateur hardware design they may look very different as each builder made his own case and keyboard.Ī clone of the Pentagon 512K, made by CSS. This magazine article has been translated into the English language: ( archived) or via ftp.

#Creating the sinclair zx spectrum vega how to

An article on how to build a Mistrum was published in the Czechoslovak amateur radio magazine Amatérské Radio nr 1/89. The ROM include also chars with Czech diacritic marks. MistrumĪ Czech clone of the 48K ZX Spectrum. ULA designed from discrete 74xx ICs, screen part or RAM was synchronized perfectly, without CPU blocking. Unlike previous versions, this was an amateur project, partly combining hardware of the Didaktik Gama and the ZX Spectrum 128K.Ī Czechoslovakian clone of ZX Spectrum, developed by František Kubiš at 1984, student of EF SVŠT (Electrotechnical Faculty of Slovak Technical University) Bratislava. Last model was Didaktik Kompakt (1991) which integrated all previous M hardware with a 3,5 floppy disk and the soundchip AY-3–8912. Its screen aspect ratio and display timing is different from the original ZX Spectrum because the M uses different ULA chip, compatible with the Russian clone Baltik. The model M had a modernized case, Sinclair and Kempston Joystick ports and a keyboard with cursors and reset key (but in a less quality design than the Gama). The Gama was followed by a cheaper Didaktik M (first variant released at 1990, second variant released at 1991). The Gama has a built-in 8255 chip (used for the Kempston joystick and also as a printer port) and 80KB RAM, adding an alternative memory bank from the address 32768 to 65535.

It was produced in three variants of years 1987, 19. The first model compatible with the ZX Spectrum was the Didaktik Gama, based on the U880 or Zilog Z80 processors and the original ULA chip. The Didaktik was a series of home computers produced in Skalica, former Czechoslovakia, now Slovakia. Unlike other Czecho-slovak home-made ZX Spectrum clones, the Bobo64 gained some popularity and was made by dozens of enthusiasts. 256*256 graphics with attributes per 8*1 pixels and 512*256 graphics.