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T > TESLA > ONDRA   


TESLA  Tesla
ONDRA

Developed in Elstroj and produced by Tesla Liberec and later Tesla Blatna, the Ondra was a low-cost system intended for computing initiation at home and school.

It was build around the U880 processor (East-German version of the Z80). It featured 64 KB RAM, 4 KB ROM and had 320 x 255 graphic capabilities. Three peripherals could be connected, a tape recorder, a Parallel printer and a joystick.

Only 1000 units were ever made. Then Tesla wanted to give the manufacturing to other firm. Unfortunately that never happened.

Picture and information from Jan Krupka

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NAME  ONDRA
MANUFACTURER  Tesla
TYPE  Home Computer
ORIGIN  Czechoslovakia
YEAR  1985
BUILT IN LANGUAGE  None. BASIC language must be loaded from the tape.
KEYBOARD  Calculator type, 37 keys, Upper/lower case letters, Czech alphabet, arrow keys.
CPU  U880D (Z80 clone from German Democratic Republic)
SPEED  2 Mhz
RAM  64 KB
ROM  4 KB (up to 16 KB)
TEXT MODES  40 x 20 (characters matrix: 8 x 12)
GRAPHIC MODES  320 x 240 dots. Text is displayed in graphics mode
COLORS  Monochrome
SOUND  7 programmable tones (200 – 1000 Hz)
SIZE / WEIGHT  290 mm (wide) x 130 mm (deep) x 30 mm (high) / 1,5 Kg
I/O PORTS  RF TV output, Tape interface (2400 baud), Centronics (printer) + Joystick
POWER SUPPLY  External PSU +9 V
PERIPHERALS  Joystick, printer, cassette recorder
PRICE  About 20,000 Kcs (Czechoslovakian crowns) in 1987


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