DIDAKTIK GAMA ZX Spectrum Clone Made In CSSR - Czechoslovak Socialist Republic
Item History & Price
| Reference Number: Avaluer:7052022 | UPC: Does not apply |
Real time capsule.
The clone of the famous ZX, made in Czechoslovakia. In the original packaging, was never used and was not in the work. Full original kit. Made very beautiful, and unlike the original, has more memory - 80kb.
This was a Slovak Spectrum clone made by Didaktik Skalica Ltd. in communism times (1987). It offered 80 KB RAM.
As all Z80A based computers, it was not possible to address more than 64k. So the Gama computers used a bank switching techn...ique, with two 32k additional RAMs. There was even a LED on the case, which indicated if the RAM have been switched or not!
The Gama computers had a built-in paralel i8255 interface. They used the original Ferranti ULA and had russian made memory chips.
The Gama computers were not fully compatible with the original Sinclair Spectrum due to some system variables differences.
In fact several models were made.
- The first one was black and, as it was made in 1987, it is often called Gama'87. It had a bank switching bug : if you switched the banks and the RAMTOP variable was above 32768, then the computer simply crashed...
- In 1988, the Gama'88 was launched (grey case). It's main difference is that the bank switching bug was repaired.
- One year later, the Gama'89 (guess why) was released because the '88 model was still quite buggy. Some bugs in ROM were corrected and hardware was a little bit changed, so the compatibility was improved. It has only latin character set and a print routine was implemented in ROM. The Gama'89 was the last and the best model of the Gama serie, it was manufactured up to 1992. (c) old-computers.com
This computer is new and never used and did not turn on the power. It is not tested for this reason - then it will become used. It is ~30 years old. Therefore, i am very sorry, but no any returns or exchanges are not accepted.Make a purchase only if you understand what you see.
Attention - about shipping. I always send goods by airmail. And i provide an international track.BUT. For reasons beyond my control, my goods can be shipped by sea. It may be to Canada, to the USA, and in 99% of cases it will be to Australia. On the track, it will look like a very long time import. I am very sorry, but in this case you must to wait. The goods is not lost, it is on the way.Anyone who wants to get a quick delivery, can always choose a express delivery.
Any questions please ask BEFORE purchase. Thank you.
The clone of the famous ZX, made in Czechoslovakia. In the original packaging, was never used and was not in the work. Full original kit. Made very beautiful, and unlike the original, has more memory - 80kb.
This was a Slovak Spectrum clone made by Didaktik Skalica Ltd. in communism times (1987). It offered 80 KB RAM.
As all Z80A based computers, it was not possible to address more than 64k. So the Gama computers used a bank switching techn...ique, with two 32k additional RAMs. There was even a LED on the case, which indicated if the RAM have been switched or not!
The Gama computers had a built-in paralel i8255 interface. They used the original Ferranti ULA and had russian made memory chips.
The Gama computers were not fully compatible with the original Sinclair Spectrum due to some system variables differences.
In fact several models were made.
- The first one was black and, as it was made in 1987, it is often called Gama'87. It had a bank switching bug : if you switched the banks and the RAMTOP variable was above 32768, then the computer simply crashed...
- In 1988, the Gama'88 was launched (grey case). It's main difference is that the bank switching bug was repaired.
- One year later, the Gama'89 (guess why) was released because the '88 model was still quite buggy. Some bugs in ROM were corrected and hardware was a little bit changed, so the compatibility was improved. It has only latin character set and a print routine was implemented in ROM. The Gama'89 was the last and the best model of the Gama serie, it was manufactured up to 1992. (c) old-computers.com
This computer is new and never used and did not turn on the power. It is not tested for this reason - then it will become used. It is ~30 years old. Therefore, i am very sorry, but no any returns or exchanges are not accepted.Make a purchase only if you understand what you see.
Attention - about shipping. I always send goods by airmail. And i provide an international track.BUT. For reasons beyond my control, my goods can be shipped by sea. It may be to Canada, to the USA, and in 99% of cases it will be to Australia. On the track, it will look like a very long time import. I am very sorry, but in this case you must to wait. The goods is not lost, it is on the way.Anyone who wants to get a quick delivery, can always choose a express delivery.
Any questions please ask BEFORE purchase. Thank you.
