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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

content/museum/czerweny-cz-1000.md

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+---
+title: Czerweny CZ-1000
+categories:
+- Computers
+types:
+- Home Computer
+origins:
+- Argentina
+years:
+- '1985'
+cpus:
+- Zilog Z80A
+params:
+  name: CZ-1000
+  company: /companies/czerweny
+  company_name: Czerweny
+  specs:
+  - label: NAME
+    value: CZ-1000
+  - label: MANUFACTURER
+    value: Czerweny
+  - label: TYPE
+    value: Home Computer
+  - label: ORIGIN
+    value: Argentina
+  - label: YEAR
+    value: '1985'
+  - label: BUILT IN LANGUAGE
+    value: Sinclair Basic
+  - label: KEYBOARD
+    value: Touch-sensitive keyboard, 40 keys
+  - label: CPU
+    value: Zilog Z80A
+  - label: SPEED
+    value: 3.5 MHz
+  - label: RAM
+    value: 2 KB
+  - label: ROM
+    value: 8 KB
+  - label: TEXT MODES
+    value: 32 x 24 (but 2 lines are reserved for system messages and commands)
+  - label: GRAPHIC MODES
+    value: 64 x 44
+  - label: COLORS
+    value: Black and white
+  - label: SOUND
+    value: None
+  - label: SIZE / WEIGHT
+    value: 167 x 175 x 40 mm / 350gr
+  - label: I/O PORTS
+    value: Z80 Bus, tape, video
+  - label: POWER SUPPLY
+    value: External 9V - 600 mA AC adaptor
+  - label: PRICE
+    value: $80 ($79.90 'Austral' in Argentina)
+  tabs:
+  - photos
+  - hardware
+  - emulators
+  - links
+  - docs
+  photos:
+  - title: CZ-1000
+    subtitle: ''
+    text: Thanks to Nestor Zangoni for this picture
+    image: null
+  - title: MANUAL COVER
+    subtitle: ''
+    text: Thanks to **Mario Villar**
+    image: null
+  - title: BOX
+    subtitle: ''
+    text: Thanks to Nestor Zangoni for this picture
+    image: null
+  hardware:
+  - title: 64 KB
+    subtitle: from Suntroncis
+    text: Suntronics T/S 1000 & ZX81 64K Memory Pack (Male Socket on Back, Female Socket on Front).
+    image: /media/museum/hardware/timex_1000-suntronics-64k_1.jpg
+  - title: TIMEX SINCLAIR 1016
+    subtitle: 16k RAM extension
+    text: ''
+    image: /media/museum/hardware/timex_sinclair-1000_16kram-1016.jpg
+  emulators:
+  - title: EightyOne
+    url: http://www.chuntey.com/eightyone/
+    platform: Windows
+    text: Excellent emulator emulating nearly all ZX computers (80, 81, Spectrums, Timex, etc.). As well as emulating the machines themselves, numerous addon cards are supported, including hi-res graphics, custom character sets, sound and colour cards.
+  - title: VB81
+    url: http://freestuff.grok.co.uk/vb81/
+    platform: Windows
+    text: Sinclair ZX81 Emulator (with Visual Basic sources). Excellent emulator
+  - title: X-Tender
+    url: http://www.delhez.demon.nl/
+    platform: Windows
+    text: The best ZX emulator for PC compatibles
+  - title: ZX 81 Homepage
+    url: http://www.maxon.de/homes/r_kurz/
+    platform: Windows
+    text: ''
+  - title: ZX81
+    url: http://www.w-4.de/~kurz/
+    platform: Apple
+    text: ''
+  - title: XZ81
+    url: http://www.zx81.nl/
+    platform: Unix / Linux
+    text: And other ZX-81 emulators there...
+  - title: ZX-81 Emulator 2.1
+    url: http://www.hh.schule.de/hhs/mjaap/ftp/zx81_v21.zip
+    platform: Atari
+    text: ''
+  - title: Java ZX81 Emulator
+    url: http://home.clara.net/rsergeant/
+    platform: Other platform
+    text: Java emulator
+  - title: Timex/Sinclair 1000 Emulator (Java)
+    url: http://www.vavasour.ca/jeff/trs80.html#ts1000
+    platform: Other platform
+    text: With this JAVA emulator, you'll be able to run a Timex/Sinclair 1000 in your browser window
+  - title: zx81emu
+    url: http://www.tlienhard.com/ap800.shtml
+    platform: Other platform
+    text: ZX-81 Emulator for the SonyEricsson P800 Smart Phone
+  - title: MESS
+    url: http://www.mess.org
+    platform: Multiplatform
+    text: MESS emulates the ZX-81, Lambda 8300, Power 3000 and other clones !
+  links:
+  - title: Achromic's ZX81 Site
+    url: http://zx81.achromic.co.uk/
+    text: A small, ZX81 fan site. With games and links to some emulators
+  - title: DOCUMENTATION
+    url: http://www.8bit.ht.st/
+    text: The Lil Old Sinclair Computer Technical Information Repository
+  - title: DOCUMENTATION
+    url: http://web.ukonline.co.uk/sinclair.zx81/
+    text: ZX-81 on-line manual. Great work !
+  - title: Jame's Sinclair ZX-81 Page
+    url: http://james.istop.com/zx81/
+    text: Some technical infos and links
+  - title: Planet Sinclair
+    url: http://www.nvg.ntnu.no/sinclair/computers/zx81/zx81.htm
+    text: Planet Sinclair has very interesting information on the ZX-81
+  - title: Sinclair ZX Hardware Website
+    url: http://www.xs4all.nl/~echorod/zx/index.htm
+    text: Features designs to build your own Sinclair computer
+  - title: The ZX81 Hardware and Software Collection
+    url: http://zx81.atspace.com/
+    text: Online museum for ZX81 hardware, software and literature
+  - title: TS1000.US
+    url: http://www.ts1000.us/
+    text: Documentation, software, hardware tips and more
+  - title: Zebra Systems, Inc.
+    url: http://www.zebrasystems.com/zebrasystems/zx81/index.html
+    text: Website where you can buy Timex/Sinclair products including ZX-81 kits !
+  - title: ZX81 Collection
+    url: http://www.zx81stuff.org.uk/
+    text: Online collection of ZX81 tapes, books and hardware
+  - title: ZX-81 forum
+    url: http://zx81.tlienhard.com/
+    text: A new ZX-81 forum. cool.
+  - title: ZX81 Home Page
+    url: http://www.honneamise.u-net.com/zx81/
+    text: FAQ and ZX81 Charts.
+  - title: ZX-81 The Archive
+    url: http://www.imarshall.karoo.net/zx81/zx81technical.htm
+    text: Lot of info here
+  - title: ZX-81 webring
+    url: http://www.zx81.de/webring/index.htm
+    text: Very useful to explore other ZX-81 related sites
+  - title: ZX-Team Homepage
+    url: http://www.zx81.de/
+    text: Quite a reference for the ZX-80, ZX-81, TS1000-1500, PC8300, Lambda and Jupiter Ace !
+  - title: ZX-TEAM-homepage & ZX-81 Web-Ring
+    url: http://www.zx81.de/
+    text: Logically useful
+  - title: Web Wiz CAPTCHA
+    url: http://www.webwizcaptcha.com
+    text: Sinclair computers
+  docs:
+  - title: SINCLAIR ZX-81 BASIC PROGRAMMING
+    url: ftp://ftp.worldofspectrum.org/pub/sinclair/books/ZX81BASICProgramming.pdf
+    cover: /media/museum/docs/couvs/sinclair_zx81_basic-programming.jpg
+    text: |-
+      [**SINCLAIR ZX-81 BASIC PROGRAMMING**](ftp://ftp.worldofspectrum.org/pub/sinclair/books/ZX81BASICProgramming.pdf)written by Sinclair Research Limited / Steven Vickers
+
+       compiled/archived by Robin Stuart\
+       type of document : PDF\
+       size : 5,2 MB\
+       source : [www.worldofspectrum.org](http://www.worldofspectrum.org/)
+
+      **... READ THE ONLINE VERSION BY CLICKING BELOW :**
+  - title: TIMEX SINCLAIR 1000 - USER MANUAL
+    url: http://www.ts1000.us/usermanuals.htm
+    cover: /media/museum/docs/couvs/timex-sinclair_1000_user-manual.jpg
+    text: |-
+      [**TIMEX SINCLAIR 1000 - USER MANUAL**](http://www.ts1000.us/usermanuals.htm)written by Timex / Sinclair / Steven Vickers
+
+       compiled/archived by Bill Hicks\
+       type of document : PDF\
+       size : 3.5 MB\
+       source : [www.ts1000.us](http://www.ts1000.us/)
+
+      **... READ THE ONLINE VERSION BY CLICKING BELOW :**
+  - title: THE COMPLETE TIMEX TS1000 & SINCLAIR ZX81 ROM DISASSEMBLY
+    url: null
+    cover: /media/museum/docs/couvs/sinclair_zx81_rom-disasembly.jpg
+    text: |-
+      **THE COMPLETE TIMEX TS1000 & SINCLAIR ZX81 ROM DISASSEMBLY**\
+      written by Dr. Ian Logan & Dr. Frank O'Hara
+
+       compiled/archived by Bill Hicks\
+       type of document : PDF\
+       size : 5 MB\
+       source : [www.ts1000.us](http://www.ts1000.us/)
+
+      **... READ THE ONLINE VERSION BY CLICKING BELOW :**
+  - title: TIMEX SINCLAIR 2020 COMPUTER PROGRAM RECORDER
+    url: null
+    cover: /media/museum/docs/couvs/ts2020_tape-recorder_manual.jpg
+    text: |-
+      **TIMEX SINCLAIR 2020 COMPUTER PROGRAM RECORDER**\
+      written by Timex Computer Corporation
+
+       compiled/archived by Bill Hicks / www.ts1000.us\
+       type of document : Online reader
+
+      **... READ THE ONLINE VERSION BY CLICKING BELOW :**
+  comments:
+  - author: Diego Sapena Pastor (Argentina)
+    date: Monday 14th February 2011
+    text: As quoted by Marcelo, you could attach 16kb of extra RAM, but the price you had to pay for it (apart from the money, ''cause it was pretty expensive) was an increased reset time and a desperating slow response time when typing BASIC programs. Other drawbacks were it''s slow transfer rate cassette interface, it''s alarming high working temperature and the fact that many IC''s of the previous ZX80 were replaced by the Ferranti''s ULA (cost-saving idea) yielding the computer useless and repairless if you had it wrong, unless, of course, you could "cannibalizate" another one! Nevertheless, it was for us at that time, an adorable tiny self-contained computer with which we learnt BASIC and Z80 code in an inexpensive way!
+  - author: Marcelo O. Garcia (Hearth)
+    date: Monday 25th September 2006
+    text: I owned in the 80's (and still do) a CZ-1000, which is exactly the same as you show in your record, and had 2 Kb of RAM memory. I would add that at that at that time it was also possible to buy a RAM memory expansor, which connected to the CZ-1000 from behind. It featured 16 Kb of memory, which was "a lot" for that that time standards.
+  related:
+  - /museum/czerweny-cz-1000-plus
+  - /museum/lambda-electronics-ltd-pc-8300
+  - /museum/microace
+  - /museum/sinclair-zx-80
+  - /museum/sinclair-zx-81
+  - /museum/timex-sinclair-1000
+  - /museum/tonel-pc
+  oc_id: 925
+  source:
+    url: https://web.archive.org/web/20230604045301/http://www.old-computers.com/museum/computer.asp?c=925
+    date: '2023-06-04'
+---
+
+TADEO CZERWENY "CZ" is a an electromechanical company, which was founded by Tadeo Czerweny in September 1958. It is located in Parana, Entre Rios province, in Argentina. The company made transformers, electric motors, etc. In the 80´s Czerweny marketed the Timex Sinclair´s models, under its own name.
+
+The CZ-1000 is thus a rebadged [Timex Sinclair 1000](/museum/timex-sinclair-1000/), which is itself a [Sinclair ZX-81](/museum/sinclair-zx-81/) with 2 KB RAM.
+
+In Argentina Czerweny models competed with Brazilians TK 83, 85, 90x and genuine Sinclair machines, but CZ sold more machines than them.
+
+---
+
+**Marcelo Garcia** comments:\
+In the 80's in Argentina it was possible to find a memory expansion module (16 KB), which was simply a box with extra memory chips which plugged into the back of the Czerweny CZ 1000
+
+<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>