This article is a stub. It was designed to be a low-cost entry computer for the general public. Currently, emulation for this item does not auto-start. Print view; Search. The ZX81 was, however, a far sleeker affair than its white plastic-encased stablemate. Frogger was positively received as one of the greatest video games ever made and followed by. Online version of Frogger for Arcade. BoycottAdvance Online (BAO) [Gameboy Advance Emulator in Java] CottAGE (Cott Arcade Generic Emulator) [Multiple Arcade Emulator in Java] PlayScott (the Online Arcade JukeBox) [Multiple Arcade Music Emulator in Java] GPCott [GamePark 32 Emulator in Java] PotatoSMS [Master System/GameGear Emulator in. sz81 - a ZX81 and ZX80 emulator using SDL This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 44 for 32 bit Windows (12:18 PM 12/14/20) The Z80 Emulator is a full featured emulator designed to run CPM, Intended for Hobbyists. This program is actually a Spectrum . . _Pink_cs Scanner Internet Archive Python library 2. With the basic idea of the keyboard at hand, I needed a way to connect it to a ZX81. 2 RC1 is released. The project. EightyOne is an emulator for the range of ZX home computers made by Sinclair Research (and their clones) in the 1980s, primarily the ZX80 and ZX81 but also includes the ZX Spectrum models. The software also supports the pseudo-hi-res mode and can save and load programs in. A tribute repository for the Sinclair ZX81 homecomputer. There is many a web page or YouTube video. ZEsarUX v10. This a computer presevation project for the Sinclair ZX81. 3D Monster Maze (19xx)(J. There is information about all the items, including inlay and instruction scans, screenshots. For source code, downloads, embedding on your own site: JSSpeccy 3 on GitHub. html. 避妊薬としての利用のほか、生理不順を解消し生理痛を抑える効果もあるため、避妊薬としてだけでなく生理の悩みを解消する目的で、多くの女性が. z81 - Sinclair ZX81 and ZX80 emulator. Followers 1. p uboot. I'll try them out. Tandy CoCo. Download sz81 for free. ZX81 Tapes, Hardware and Books Collection. Older versions: v1, v2v1, v281-libretro is an work in progress port of the EightyOne (a. 9 • 61 Ratings Free Screenshots iPad iPhone Welcome to a taste of early 1980s home computing. ZEsarUX also includes a folder,. . The . 2068 Emulator Board. techie_alison Administrator Posts: 1547 Joined: Tue Aug 23, 2005 10:06 am Location: Cambridge, UK. This is the Z80 Emulator Version 1. Also included are zx81get (a ZX81. This was adapted from a Spectrum program, and is an interesting game in the "puzzle" genre. . The content is provided for educational purpose, not for entertainment purpose. Use on Other Web Sites. Para usar, acesse o link a seguir:. 25 MHz with a mere 1KB of RAM (although many users purchased a 16KB external RAM pack). It has a built-in encoder Done: 2000 – 0. e. It was the first home computer available for under $100 and you got what you paid for. The Commodore 64, also known as the C64 or the CBM 64, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, in Las Vegas, January 7–10, 1982). Features include Z80, Z180, I8080 Instruction sets. kandi ratings - Low support, No Bugs, No Vulnerabilities. It must be a complementary emulator ! Eo generalist, XuR toolkit, sZ81 sound+gamming ! We can work on the main Zx81 engine, but it steel releable as is. An emulator is available on the site to play the game online. Features. a. When using single touch one first presses Shift and then the key. For a more complete list, try this section of the Google. Z81 file is an EightyOne Snapshot file. Educational (9) Arithmetic Under 8 - Add sz81 is a Sinclair ZX80 / ZX81 emulator very much based upon the work of Ian Collier's xz80 and Russell Marks's z81 but employing the highly portable SDL and including additional functionality and features for desktop computers and portable devices. 2 RC1 is released. A . by Fruitcake » Mon Dec 17, 2018 2:11 pm. In my case, the listing was saved to a file called uboot. testing ZX81 emulator on iPhone 6 plus with newest iOS. The emulator uses adapted versions of js-unzip and js-inflate to access TZX files within ZIP files. As well as emulating the machines themselves, various add-on interfaces are supported, including storage devices, hi-res graphics, custom character sets, sound. A. This produces hw. The ZX81 is a home computer released by Sinclair Research back in 1981. Both machines also featured 1KB of memory and required a UHF. It uses an Arduino Nano to store tape data files and replay them to load software on the retro platform. No SDcard or USB keyboard yet alas. Robotron KC85. Any discussions related to the creation of new hardware or software for the ZX80 or ZX81. cd ~/Files/emulation/zx81 #Set az15 keyboard options, if you haven't built a az15 the comment this out. Most things expected from an emulator. The upshot of which is that the Spansih version of the Spectrum 128 ROMs is technically owned, in part, by all of the above companies. EightyOne is an emulator for the range of ZX home computers made by Sinclair Research (and their clones) in the 1980s, primarily the ZX80 and ZX81 but also. A long time ago in a land far far away Sinclair Research released unto the world a ZX81 kit computer. It wasn't until circa '92-93 that the ever-falling price of PC clones and the Mega Drive (AKA Genesis) and later SNES took over and *really* started to dominate the home market. Emulates Spectrum models: 16k, 48k, Inves Spectrum +, Spectrum 128k (English and Spanish), Spectrum. Other very popular computers were the Commodore 64 and the Apple II but were far more expensive (ZX81 was ten times cheaper than Apple II Plus). The dz80 disassembler by Mark Incley. JtyOne Online ZX81 Emulator. Random question, Has anyone tried to connect a composite modded ZX81/TS1000 to a USB video capture device? I really want to do a direct capture from it but I get constant flickering and the text cannot really be read. 81 file. * Translated from EightyOne - A Windows ZX80/81/clone emulator. If using an emulator make sure it's set for 1K. It was a huge success. tzx . DOWNLOAD OPTIONS download 1. Snapshot files allow users to save. Sinclair ZX-80. The Java ZX81 Tape Converter allows you to to convert sampled sounds to ZX81 . comment. Mike Wynne's ZX81 emulator, EightyOne is also using Fuse's Z80 core. This emulator can be installed from the experimental menu of the RetroPie-Setup script. emulator amstrad-cpc apple2 atari2600 z80. Tandy CoCo. Abstract. zip: ZX81 emulator - DOS: mtmw130b. I think the "Simple ZX81 emulator" is a little outdated now - EightyOne is the most accurate ZX81 emulator available for Windows (And probably any other system too)" :- Mike Wynne. the ZX81 tape file format and/or ZX81 emulator . Added the following tapes (total now 482): Electric Cost Analyzer , Execu-soft , Graphics Kit. One of the differences between the ZX80 and it’s younger sibling, the ZX81 is the use of decimal number. 0. 1) Program For a 1K ZX81. It also uses the Adafruit supported TinyUSB project. electron react desktop-application zx-spectrum zx81 zxdb zx80 zxinfo lambda8300 Updated. Runs on: WinXP, Win2000, Win98, Win95 (DirectX 5+ req'd) Emulates: ZX80, ZX81, TS-1000, Spectrums, Amstrads, Jupiter Ace, Enterprise. Sinclair ZX81 emulator for PSP Saturday, November 10. out. EightyOne emulates a number of ZX80, ZX81, clones, and other computers based on the same hardware: Sinclair ZX80. There are plenty of sites relating to the follow up machine the ZX Spectrum but not much on the ZX81. To access a large portion of a PS2 keyboards functionality, various modes are selectable by using the standard mode keys. 44 for 32 bit Windows (12:18 PM 12/14/20) The Z80 Emulator is a full featured emulator designed to run CPM, Intended for Hobbyists. Can load & save ZX80 programsfrom & to disk in O-files. ZX-TEAM Projects & News-Projects of HD, floppy disk and LCD, between others, for the ZX81. JtyOne was based on Mike Wynne's EightyOne Emulator (written in C#) that was notable for being able to accurately emulate ZX81 games that offered pseudo high-res graphics. Features (Hopefully). The answer is a little tool called TXText2P – a command-line utility that can convert a text file into a P-File that can then be loaded by the ZX81 Emulator. EightyOne currently emulates: Sinclair ZX Spectrum 16k/48k Amstrad/Sinclair Spectrum +2 Amstrad/Sinclair Spectrum +2a Amstrad/Sinclair Spectrum +3 Retro-Computing - Sinclair ZX81 Online Emulator Explore few programs created for the Sinclair ZX81. About this Site. EightyOne is an emulator for several home computers made by Sinclair Research (And their clones) in the 1980s. Online version of Elite for ZX Spectrum. ZXS (readonly), . Tests) The tests are a translation of the documentation, the assembler backend is needed to write tests and stay sane and the emulator is the whole point. . p file in the emulator and play The keys are x up, n down. Only the keys required from the ZX81 keyboard are shown. ZEsarUX (Cesar Hernandez) ZX80 / ZX81 emulator for Linux, Mac OS X, Windows. The pico-zxspectrum provides basic 48k/128k ZX Spectrum emulation on the Raspberry Pi RP2040 with DVI video output. E. 0. It uses the same VB core as vbSpec, but due to differences in the display hardware and processor speed of the ZX81, this will run happily at full speed on just about any PC that is capable of running Windows at a. sZ81 – Zx80 and Zx81 Emulator. I believe that every hobbyist who would like to learn how to develop their own. It sold 1. The guts of the loader is a TZXDuino, a Spectrum tape emulator related to the Arduitape. Here is a newly made game for the ZX81 and an emulator to play it on! Let's dive in!👉 Get the Emulator: Get the G. You can download it from. Excellent emulator: X-Tender: The best ZX emulator for PC compatibles: ZX 81 Homepage: ZX81: XZ81: And other ZX-81 emulators there. ZX81 Emulator. ini, either a ZX80 program can be loaded, or the computer type ZX80 can be selected from the Modify menu. Emulator Online has all the retro games from Super Nintendo (SNES & NES), SEGA (Genesis & Mega Drive), Game Boy (GBA, GBC, GB), N64, Nintendo DS and Neo-Geo Games. v86 by Fabian Hemmer – PC/x86 (various systems) 2013. Using ANSI C to emulate a Z80 CPU, then adding hardware emulation for a 1980s Sinclair ZX81 computer. 3. And that is all… in EightyOne, the file can now be loaded by File. This emulator consisted of a 32K EPROM that replaced the 16K ROM. To associate your repository with the zx81 topic, visit your repo's landing page and select "manage topics. I'll try them out. Post Reply. 0. This one runs in on a Coleco Adam. FUSE is a ZX Spectrum emulator that provides accurate emulation of various models, including the 16K, 48K, 128K, +2, +2A, and +3, including the NTSC variant. It was launched in 1981 and sold for £49. . You can also select your local (on the device) files, convert them to sound files, and then play them. Announcing a big revamp of my site, including a new JavaScript ZX81 Emulator (based on EightyOne and FUSE's Z80 core). Quick reference Emulator: RetroArch Core: libretro: 81 Folder: /userdata/roms/zx81ZX81 - IOS An emulator for the ZX81 for your iPhone or iPad The best emulation of a ZX81 on an iPhone or iPad. The Second mode, or Standard mode attempts to provide the functionality of a PS2 keyboard. This produces hw. z81 is a Sinclair ZX81/ZX80 emulator with versions for X and the Linux console. 3. I've always wanted a ZX81 emulator with an IDE that single steps Basic and Assembly and is able to dump the contents of variables like IDEs such as Visual Studio. The Sinclair ZX81 was released 1981 in the UK and later in 1982 in a slightly modified form as the Timex Sinclair 1000 in the United States. ZEsarUX: A cross-platform emulator that supports the ZX81 and many other systems, including the ZX Spectrum and Amstrad CPC. Play web remake of 3D Monster Maze - Malcolm Evans & J. Press F6 to bring up the Modify menu. This is a video on how to setup and use EightyOne v1. OSI Challenger 1P. Updated the ZX81 Tape Converter to fix another synchronization issue, and added preferences for the maximum number of allowed errors and warnings. You'll get to see my process for building MCU simulation, drawn from my previous experience working on AVR8js , an open. Of course, the ZX Spectrum brought colors and sounds but even the ZX81 had expansions like Chroma and Zonx. The joystick will double-up as a controller for the emulator's menu system and a mouse for interacting with the underlying Linux system, so I also added a small secondary button. zip. This program is distributed in the hope. For this there are two options, either connect directly into the heart of the machine replacing the existing membrane keyboard, or build an external expansion interface card for ZX81 and keyboard. However, the quality and stability of online play can vary depending on the emulator and the game being played. The emulator uses adapted versions of js-unzip and js-inflate to access TZX files within ZIP files. Timex Sinclair 1000 Emulator Online (java applet) Roda direto do browser, sem a necessidade de instalar nada. Game: Run — R, ENTER Left — 6 Right — 8 Shoot — 0 Links: → Info about ZX80 (en) → Немного о ZX80 (ru) June 14, 2023 by Jenny List 16 Comments. MONS 3 in the ZX Spectrum, for example, changes the instruction at the break address by a CALL to an entry point in MONS. Runs any hi-res, semi-hi-res, mixedresolution, and low resolution ZX81 program. space bar or key to fire (also Cheetah joystick enabled if you play on real zx81). MORE GAMES. From here, perhaps. sz81 is a Sinclair ZX80 / ZX81 emulator very much based upon the work of Ian Collier's xz80 and Russell Marks's z81 but employing the highly portable SDL and including. The other thing it tests is the SCROLL routine, which causes the display to bounce a bit when used on a real ZX81. It is available for Windows and has a user-friendly interface with many features. The ZX Spectrum (UK: / z ɛ d ɛ k s /) is an 8-bit home computer developed and marketed by Sinclair Research. Be the first one to write a review. Emulators. sz81 is a Sinclair ZX80/ZX81 emulator very much based upon the work of Ian Collier's xz80 and Russell Marks's z81 but employing the highly portable SDL and including additional functionality and features for desktop computers and portable devices. k. Pin 4 - 8: Column lines on the ZX81 keyboard matrix. Greye Software) Notes. 1 of xz81. Squash Trainer is my entry to the PUR-80 category of the BASIC 10 Liner Contest; this means the program is 10 lines long and each line is made up of 80 characters to the upmost. They are known as the Model I, Model II, Model III, Model 4, Model 4P, Model 4D, Model 12, Model 16 and Model 6000. 5 million units from 1981. net. ZX81 Collection, the largest online collection of Sinclair ZX81 and TS1000 games, software, books and hardware. The emulator uses adapted versions of js-unzip and js-inflate to access TZX files within ZIP files. zip: Sort of an experimental unfinished ZX81 emulator - Windows: zx81. t81: Emulator: lr-81. O. ZX Spectrum emulation powered by JSSpeccy JavaScript emulator. DOWNLOAD OPTIONS download 1. Virtually all modern emulators support one (often both) or more of the following: DSK / Extended DSK Format The extended DSK image is a file designed to describe copy-protected floppy disk software. About; Team; SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900; Resources. The $4 Pi. The emulator doesn't load individual . 675 Topics. d formats). K. The ZX81 emulator, also capable of emulating ZX80, ZX Spectrum, Sinclair Spectrum, Jupiter ACE, Timex TS1000, TS1500, TS2068. You do not have the required permissions to view the files attached to this post. To make picozx81 emulate a ZX80, without changing config. P and . ZXDS is an emulator of Sinclair ZX Spectrum for Nintendo DS, written by Patrik Rak. As well as emulating the machines themselves, various add-on interfaces are supported, including storage devices, hi-res graphics, custom character sets, sound. 0. Joysticks. Emulator zx81 Emulator_ext p Identifier ZX-81_Tetris_19xx_Russel_Marks Scanner Internet Archive Python library 2. I. Play online: 3D Monster Maze with the JtyOne ZX81 emulator, with a touch keyboard for iPhone, iPad, Android mobiles and tabletsEmulating the Sinclair ZX81 in JavaScript This site demonstrates (a minor fork of) Simon Holdsworth's JtyOne JavaScript Emulator. It was first released in April 1982, and the last model was discontinued in 1992. plus-circle Add Review. ZX81 Forever-Page of André Baune, with his incridibles programs in Basic. Mocha will pick the best control scheme when possible. In the meantime, if you have an iOS / iPadOS device you could give my ZX81 emulator a whirl and see what you think of the definable gamepad option. z81 file format stores snapshot files of Sinclair ZX81 computer emulator software. Features Virtual keyboard with several adjustable properties JtyOne was based on Mike Wynne's EightyOne Emulator (written in C#) that was notable for being able to accurately emulate ZX81 games that offered pseudo high-res graphics like Forty Niner and Rocket Man from Software Farm. I know some are working on a C64 emulator possibility. The Sinclair ZX81 is presented in Swedish in the file zx81_beckman. There are actually two versions - z81 (for svgalib), and xz81 (for X). 4. This is a (short) list of Science of Cambridge MK-14, ZX80 , ZX81 / TS1000, Sinclair QL and Jupiter ACE emulators available that may be of interest to you. OSI Challenger 1P. The emulator can be used subject to the following. You load it into your emulator, run it, then use the emulator's audio-reading capability through the sound card to actually read in the ZX81 program from your cassette. Reviews There are no reviews yet. Save . The emulator uses adapted versions of js-unzip and js-inflate to access TZX files within ZIP files. TZX file. Post by Jim Grimwood. Since the ZX81 is a Z80 based computer, the first thing we need is a Z80 emulator. During development, the ZX Spectrum was referred to as the ZX81 Colour and the ZX82. 5MHz chewing gum, not exactly a quartz oscillator, in fact, my oscilloscope tells me that my ZX81 is running at 3. zcc +zx81 -lndos -create-app hw. If you do not have a ZX81 emulator installed on your computer, and your computer is not itself a ZX81 or ZX81 compatible, you can type any of these programs into the JtyOne online ZX81 emulator and see what they do. It is generally easier to use ordinary digits for the Model 1, Model 2 and Model 3. You can help Emulation General Wiki by expanding it. 30b Release Date: 2003 Author: Paul Hodgson. About. Have fun playing the amazing Qbert game for M. which you can run within your browser - just click on the "Play" button next to the track to launch the JtyOne emulator (note: needs Javascript to be enabled in. My ZX81-emulator for the ZX Spectrum got an updated version in 2020 which is much quicker, has partly chromacharacters and can play games that use special technics on the screen. The Sinclair ZX81 was an extremely spartan home computer produced in the early 1980's. The successor of the ZX81 is the ZX. ZX81 Emulator Cartridges for Sinclair Interface 2 General description. " GitHub is where people build software. Taper. Version 1. . Surprisingly, this is a pretty complex routine on the ZX81 and a good test of how the overall emulator works and interprets the ZX81’s ROM. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"Makefile","path":"Makefile","contentType":"file"},{"name":"file2c. Sinclair ZX Spectrum TOSEC Set – The ultimate, most complete ZX Spectrum files set that have ever been. ZX81 (EightyOne) WIP¶ Background¶ 81-libretro is an work in progress port of the EightyOne (a. ZEsarUX a cross platform ZX computer emulator with binaries are available for Windows, Debian, Raspian & Mac OS X. You may not see much of a difference, but you are now in ZX80 mode. As well as emulating the machines themselves, various add-on interfaces are supported, including storage devices, hi-res graphics, custom character sets. The ZX Spectrum also has a Videopac/Odessey2 emulator coded in 2000. k. zxtext2p -o uboot. You can spend a lot of time on [Trucco’s] site. 95 in kit). Since the Adam is a Z80 system with free RAM in the right area I am able to load the ZXROM at 0h, my emulator code at 2000h and have 16k free memory. Tesla PMD-85. We, the members of the MyEmulator team are gamers. QML based ZX81 Emulator ===== Project based on SZ81/Z81 emulators (backend) and QVBAM (frontend). 25MHz ZX81. ZX80 / ZX81 emulator for Javascript enabled Web browsers. File Information. 5. Various online examples of HiRes code work perfectly within an emulator but causes severe video sync problems on a real ZX81 Mike Wynne is something of a giant in the. TSCon3. Thunor is the main contact ( sZ81 web-master/ source manager)-> SDL-Zx81 engine. 354 Views . Numbers = F1 - F10 etc byte bGraphicsShifted; // Standard ZX. I was immediately hooked and my parents bought me one of my own a few months later. Hot on the heels of the Speccy emulator, is an emulation of the Spectrum's older brother, the ZX81. The 1351 had two modes of operation, an analogue mode and a digital. zip. 3. dsk images can be loaded via the "Local File" button. Game: Run — R, ENTER Left — 6 Right — 8 Shoot — 0 Links: → Info about ZX80 (en) → Немного о ZX80 (ru) → ZX80 BASIC manual Download sourcesJune 14, 2023 by Jenny List 16 Comments. Features. ini, either a ZX80 program can be loaded, or the computer type ZX80 can be selected from the Modify menu. With the performance improvements on the PI 3, the choice of emulator is now wide open, a nice change indeed. This is a ZX-Spectrum emulator for Windows 2000. jspspemu by Carlos Ballesteros Velasco – PSP 2014. 81-libretro. Create a Project; Open Source Software; Business Software; Top Downloaded Projects; Company. Clock Signal, also known as CLK, is an MIT-licensed, free and open-source emulator of a collection of 8- and 16-bit computers and consoles for Linux, macOS and BSD. It can be used as a virtual tape unit in conjunction with a real ZX Spectrum. Thunor. By July 01, 2018 Add-ons , Arduino , Hardware , Mouse , ZX Spectrum , The ZeaMouse version 2 firmware should take a USB mouse and have it function in a similar fashion to a Commodore 64s 1351 mouse. The ZX81 was designed as the low-cost successor to the ZX80, accessible to the general public. SDL. The emulator can be used subject to the following license: /* JtyOne - A JavaScript ZX81 emulator. Home; Updates; Emulator;. 23 - GW-BASIC emulator #osdn Zx81 Emulator written. Rom Folder. P to a text file of Sinclair BASIC. It uses the same VB core as vbSpec, but due to differences in the display hardware and processor speed of the ZX81, this will run happily at full speed on just about any PC that is capable of running Windows at a. There are also many original games for the Zeddy, check Bob's Stuff for some high quality games. 77 Views . This app focuses on the Sinclair ZX81 experience and is loaded with. It accurately emulates Spectrum 48k, 128k and Pentagon, and supports SNA/Z80/SZX snapshots, TAP/TZX/PZX tape files, TRD/SCL disk files and RZX replay files. This has some side effects: the Tape recordertape recorder can also record from audio-in. ColEm is one of the best emulator of the ColecoVision videogame system running on. This is the USA version of the game and can be played using any of the Mame emulators available on our website. This article needs some TLC. Sir Clive Sinclair’s ZX81 was a phenomenal sales success as one of the cheapest machines available in the early 1980s, but even its most fervent admirers. . 15 Retro computing emulators that run online! Relive the early days of computing in your browser (but do remember to pause to eat and sleep). The microcontroller for the keyboard is an Arduino Pro Micro. Support for up to 320 by 240 pixel display, i. (Input Only: applies when using the keyboard with the ZX-Key Interface Expansion). tap which you can then load into a Spectrum emulator such as Fuse or ZEsarUS. As well as emulating the machines themselves, various add-on interfaces are supported, including storage devices, hi-res graphics, custom character sets, sound. Download consoles computers Roms, for free and play handheld arcade games on your devices windows pc , mac ,ios and androidThe Sinclair ZX81 was my first computer, I learned how to program (in basic) using this machine in late 80's. The ZX81 was designed as the low-cost successor to the ZX80, accessible to the general public. ) Mac OS X 10. Show all ZX80 MicroAce ZX81 TS 1000 TS 1500 TS 2000 TS 2048 TS 2068 TC 2068 ZX Spectrum QL Z88 Downloadable. The ROMs are not included with the software, and have to be obtained separately. z80_303. 3. comment. 25MHz The clock frequency is gained from a high tolerance 6. There is little difference technically speaking between these two systems aside from the build of the machine. NO$ZX81 . Game Boy Advance games and all other games are in high quality! Play all the Retro Games that you used to play back in the day, and with our recommendation. Quiltrex • 6 May • The Royal Game Of UR [70] • 1 May • Ataque Cibernético • Ms. World of Spectrum-Site dedicado ao ZX Spectrum, mas com muita informação sobre o ZX81. for PC (Windows) Name: Multimachine Emulator Version: 1. Nine Tiles Networks permits distribution under the GNU GPL. All about ST/STE games. Rom Folder Extension; lr-81: zx81. retro; Day: Saturday;. Since the ZX81 had a touch keyboard the feeling is similar. 81-libretro is an work in progress port of the EightyOne (a. dsk and . The ZX81 was a Z80-based home computer produced by Sinclair Research and manufactured in Scotland by Timex Corporation released on March 5, 1981, and had a retail price of $99. Thanks. zx81-javascript-emulator. If you have updated from a much older version of EightyOne then you will need to delete the EightyOne. Mostly stuff for people who've never seen one before.