yann64andClaude Opus 5.5
b274874139
1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
107 lines
3.3 KiB
Markdown
107 lines
3.3 KiB
Markdown
---
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title: Tesla ONDRA
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categories:
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- Computers
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types:
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- Home Computer
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origins:
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- Czechoslovakia
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years:
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- '1985'
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cpus:
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- U880D
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params:
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name: ONDRA
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image: /media/museum/photos/tesla_ondra_system_s1.jpg
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company: /companies/tesla
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company_name: Tesla
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specs:
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- label: NAME
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value: ONDRA
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- label: MANUFACTURER
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value: Tesla
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- label: TYPE
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value: Home Computer
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- label: ORIGIN
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value: Czechoslovakia
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- label: YEAR
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value: '1985'
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- label: BUILT IN LANGUAGE
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value: None. BASIC language must be loaded from the tape.
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- label: KEYBOARD
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value: Calculator type, 37 keys, Upper/lower case letters, Czech alphabet, arrow keys.
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- label: CPU
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value: U880D (Z80 clone from German Democratic Republic)
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- label: SPEED
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value: 2 Mhz
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- label: RAM
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value: 64 KB
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- label: ROM
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value: 4 KB (up to 16 KB)
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- label: TEXT MODES
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value: '40 x 20 (characters matrix: 8 x 12)'
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- label: GRAPHIC MODES
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value: 320 x 240 dots. Text is displayed in graphics mode
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- label: COLORS
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value: Monochrome
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- label: SOUND
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value: 7 programmable tones (200 – 1000 Hz)
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- label: SIZE / WEIGHT
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value: 290 mm (wide) x 130 mm (deep) x 30 mm (high) / 1,5 Kg
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- label: I/O PORTS
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value: RF TV output, Tape interface (2400 baud), Centronics (printer) + Joystick
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- label: POWER SUPPLY
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value: External PSU +9 V
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- label: PERIPHERALS
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value: Joystick, printer, cassette recorder
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- label: PRICE
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value: About 20,000 Kcs (Czechoslovakian crowns) in 1987
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tabs:
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- photos
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forum_thread: 599
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photos:
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- title: LARGE VIEW
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subtitle: ''
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text: Thanks to **Jan Krupka**
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image: /media/museum/photos/tesla_ondra_system_s2.jpg
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- title: KEYBOARD CLOSE-UP
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subtitle: ''
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text: Thanks to **Jan Krupka**
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image: /media/museum/photos/tesla_ondra_keyboard_s1.jpg
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- title: INSIDE
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subtitle: ''
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text: Thanks to MUDr. Jan P. Naidr for this picture
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image: /media/museum/photos/tesla_ondra_eclate.jpg
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- title: 'WITH COLOUR TV #1'
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subtitle: ''
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text: Thanks to MUDr. Jan P. Naidr for this picture
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image: /media/museum/photos/tesla_ondra_2.jpg
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- title: 'WITH COLOUR TV #2'
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subtitle: ''
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text: Thanks to MUDr. Jan P. Naidr for this picture
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image: /media/museum/photos/tesla_ondra_3.jpg
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- title: THE BOX
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subtitle: ''
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text: Thanks to **Jan Krupka**
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image: /media/museum/photos/tesla_ondra_box_s1.jpg
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- title: ONDRA'S DESIGNER
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subtitle: ''
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text: |-
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Eduard Smutny was the designer of the Ondra.
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Thanks to MUDr. Jan P. Naidr for this picture
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image: /media/museum/photos/tesla_ondra_engineer.jpg
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oc_id: 612
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source:
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url: https://web.archive.org/web/20230608081413/http://www.old-computers.com/museum/computer.asp?c=612
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date: '2023-06-08'
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---
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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.
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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.
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Only 1000 units were ever made. Then Tesla wanted to give the manufacturing to other firm. Unfortunately that never happened.
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Picture and information from **Jan Krupka**
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