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Jan 18, 2021 Mike Sandau
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See uploaded photos. Step 1: remove unnesseccary things like cables etc. remove the five red screws from the back of the chassis Step 2: open the turntable, remove the six  screws marked on the diagram Step 3: carefully lift the top mechanics plate to see it moving unscrew the other 4 screws holding the PCB and motor to chassis. step 4: carefully lift the top mechanics plate  as much as needed to remove the motor PCB below it, it'll come free. Step 5: resolder the bad soldering joints and...
Topic: Technics SL-Q300 repair soldering HIFI turntable
Miscellaneous Computer Magazines
Jan 4, 2021 HEIM Verlag
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Magazine vom Dachboden vor der Vergessenheit gerettet.
( 1 reviews )
Topics: Atari ST, Magazin
Miscellaneous Computer Magazines
Dec 21, 2020 HEIM Verlag
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Magazine vom Dachboden vor der Vergessenheit gerettet. Weitestgehend von Werbung befreit.
Topics: Atari ST, Magazin
Miscellaneous Computer Magazines
Dec 21, 2020 HEIM Verlag
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Fakturierungen im VergIeich Diskus 2.70 Pure Profiler Relax - Aktuelle Spiele ...............................,.................... 112 STarCall HARDWARE Eickmann Tower Die Hotzbox OKI Microline 590 PC-Handscanner voll kompatibel Skunk32 GRUNDLAGEN Graues wird noch grauer & Buntes noch bunter Knöpfe im neuen Gewand MultiTOS für Einsteiger Speedo-Gonzales
Topics: Atari ST, magazin
Miscellaneous Computer Magazines
Dec 20, 2020 HEIM Verlag
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Diese Ausgaben fanden sich auf dem Dachboden und sollen der Nachwelt erhalten bleiben: März Mai August Oktober
Topics: ST computer, Magazin
Miscellaneous Computer Magazines
Dec 19, 2020 HEIM Verlag
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ST-Computer went away from Atari. The shift to Apple Macintosh was owed to lacking news from Atari. Atari was sold a year later.
Topics: Atari ST, magazin
Manuals: Atari
Dec 18, 2020 Atari Corp
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Original users manual of the crispest displays:Atari SM 124 The resolution it displayed is 640 x 400 pixels in black and white
Topics: Atari st, atari 16 bit, display, monitor
Miscellaneous Computer Magazines
Dec 18, 2020 HEIM Verlag
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Grundlagen Grafikroutinen System Sprachen Utilities
Topics: Atari st, magazin
Manuals: Atari
Dec 16, 2020 Atari Corp
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Original scan of my first Atari 520 ST owners manual. -enjoy
Topics: Atari ST, Manual, Handbuch, Atari 520ST
Miscellaneous Computer Magazines
Dec 15, 2020 Heim Verlag
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Flopper-Controller Dampf gemacht 1.1 MB auf einer Diskette Druckerunabhängige Ausdrcke OMIKRON.BASIC Lovely Helper Modula 2-Kurs Pogo bringt Lisp zum Tanzen
( 1 reviews )
Topics: Atari ST, german magazine
Manuals: Atari
Nov 25, 2020 Omikron Software GmbH
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K-Spread was one of the first useful spreadsheets for the Atari computers. It had full GEMDOS GUI support, and macros were possible.
Topic: spreadsheet atari 16-bit Atari ST manual omikron
Manuals: Contributions Inbox
Nov 24, 2020 MicroTalk e.V.
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my favourate BBS at this time. Online time was costly so you were limited to BBS near to you.  Besides the description of the BBS itself (menus, bulletins, PM) it contains background information about Terminal programs you could use ARC compression  Binary file transfer protocols, X-Modem,...,Z-Modem  
Topics: file transfer protocols, X-Modem Z-Modem VT52 BBS Mailbox Stuttgart Gemany
Community Images
Nov 23, 2020 SOFTLINE
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A platform independent description on how to fly a virtual airplane with the renown    FLIGHT SIMULATOR II      by   Sublogic Some general rules of flying and navigating
Topic: FS2 8-bit Sublogic Flight Simulator tips tricks flying learn to
Community Texts
Nov 23, 2020 R Zellmer
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MEGA DRIVE was a 3rd party harddisk + controller device that was usable for the 16 bit Ataris like Atari ST. Basically it was only the controller and the driver software because mine has had a Seagate harddisk built into the casing. It could be used instead of the Atari Megafile harddisks, and was cheapter, had more storage. Mine had 86 MB on a 5,25 inch harddisk. Instead of only connecting ASCI HDs like the Megafile, this controller allowed real SCSI devices attached to the Atari. So it was...
Topic: Atari ST TT 16-bit Harddrive SCSI ASCI controller harddisk 3rd party
Community Texts
Nov 23, 2020 Friedhelm Heyer und David Neumann
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IMEX was a RAM upgrade for the Atari 16 bit machines like Atari ST. It could be used in various types of the 16 bit line of Atari.I bougt one, installed it myself and it's still working today (2011)
Topic: Atari 16 bit ST TT RAM upgrade Memory expansion product IMEX
Manuals: Contributions Inbox
Nov 9, 2020 PD Productions
software

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the PX2 was a hobbyist A/D converter. It had to be attached to the Atari ST printer port instead of a real printer. It was delivered with GEM based software. It was mainly used for experimental approches to sample sounds in mono (one channel). Sampled sounds of a few minutes in 8 bits 22 kHz quality. The Atari ST was a computer that had the neccessary RAM ressources to make this possible. 
Topic: Atari ST sound sampler printer port 8 bit 22 khz
Manuals: Contributions Inbox
Sep 18, 2020 Deutsche Bundespost
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Datex-P (Data Exchange, packet-oriented) is Deutsche Telekom's product name for a communication network for data transmission based on the X.25 interface protocol for packet switching. It was introduced in Germany in August 1980 by the Deutsche Bundespost (DBP); initially in free trial operation, from August 1981 in regular operation. [2] The data transfer rate could be selected from 50 baud (acoustic coupler speed) up to 64,000 bit / s. [3] Existing connections were migrated to a new technical...
Topics: packet switching, datex-p, local remote, data transfer, packet
Community Texts
Sep 2, 2020 Heyer & Neumann
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an expansion card for the Atari ST. It was a really cool kit that increased the performance of a Atari ST from 8 to 25 MHz (CPU internally only), also adding a CPU cache that the original machine didn't have. The boost wasn't rally  25-8 ----------     8 because the bus of the Atari was still running with 8 MHz. Anyhow it would speed up your system. Wasn't really cheap but - hey what! Designers of this expansion module don't seem to be active still, tried to contact them. They did a good job...
Topics: Atari ST, CPU cache, Booster, 25 MHZ, 8 MHZ
Community Texts
Sep 2, 2020
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CCC is a short name for "Chaos Computer Club" It is a German club that could be identified as liberal, independent. Up to now they work hard on protecting my and your freedom and up to now protect private data. That's what they already done in the 1980ties. The document describes how a modem is working.
Topics: CCC, Chaos computer club, modem homebrew
Manuals: Atari
Aug 28, 2020 MAXON
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This great EPROM programmer (DE:"Prommer") was both reliable as well as afforable. It still works in 2020. It was delivered as a selfbuild kit and was assembled by the customer. (Manual published with permission)
Topics: ATARI ST, ATARI TT, EPROM, programming, 27512, 27128, 2764, MAXON
Manuals: Atari
Aug 28, 2020 Galactic
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Short description how to upgrade your Atari ST for more memory. I believe it was an additional 2MB. The good thing about this design was that you still could use the original RAMs inside the Atari in addition.  Another story: Once I turned a relatively new Atari ST into a dead brick as I tried without a PCB supported upgrady. The first manuals released in magazines suggested to solder one RAM IC on top of the original, so you doubled RAM up to 1 MB. This was needed because TOS+GEM ate up...
Topics: Atari ST 520, RAM enhancement, PCB
Community Texts
Aug 28, 2020 unknown
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Tips zum Einbau der 128K Erweiterungsplatine in den 800XL Some typical 3-rd party company memory enhancement module that were avalable. As the only product to help you out of the situation. We had to solder it into the machines ourselves. Not without risk! 
Topics: Atari 8-bit, 130 xe, 128 KB memory, 800 XL, PCB
Community Texts
Aug 28, 2020 ACC
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Software brochure for Atari Falcon 030 related applications. The authors tried to boost sales of the Falcon with that, I guess. History proved the other way.
Topics: Atari Falcon 030, brochure
Catalogs Inbox and Contributions
Aug 28, 2020 American TV
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mail order / money order catalogue for all kind of Atari stuff from PCB and parts down to single screws.  Looking at the prices it must have been published whe prices for the Atari 8-bits already had hit rock bottom. Text quote: Thank you for your interest in AMERICAN TV We have one of the largest inventories in the WORLD of hard-to-find Atari replacement parts and accessorres.
Topics: Atari 8-bit, Atari 800, Atari ST 520, mail order, catalogue, American TV, hardware, parts, software
Manuals: Contributions Inbox
Aug 28, 2020 Atari Elektonik Vertriebsgesellschaft mbH
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German version of the original Atari 1010 program recorder manual. Back then in Germany everything was only in black and white ;-)
Topic: Atari 8-bit 800 1010 program recorder manual Bedienungsanleitung Programmrecorder
Magazine Contribution Inbox
Aug 28, 2020 Atari Magazin
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Documentation about very technical details on how a 1050 Happy drive works. Short explanation about the drive's architecture, memory map, etc. It's focus explains how the drive can be programmed by 6502 assembly which will be loaded into the drive (!) The commands are listed e.g. for reading and writing sectors and tracks. It describes how communication between Atari computer and Atari 1050 peripheral is working, the protocol. Some assembler listings show the hands-on
Topic: Atari 800 8-bit 1050 happy brive protocol architecture programming insight
The Software Capsules Compilation
Aug 27, 2020 Mike Sandau
software

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from my collection of selfmade  ACTION!  projects. Also some other contributors. content: FILCNT  ACT 0004  - count bytes in file  FRACT2D ACT 0009  - my calculation of a 2D fractal diagram (unfinished) GLUG    ACT 0026  - math: calculus. My plotter for equations  (unfinished) QUAD    ACT 0087  - generate a typein  game LICY    ACT 0031  - generate a typein TRON racer game: Light Cycle. It's cool!  TM      ACT 0055  - my temperature measuring, plotting program REAL   ...
Topic: atari 800 ACTION! source code Light Cycle collection library
Community Software
Aug 27, 2020 Mike Sandau and others
software

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from my collection of selfmade  ACTION!  projects. Also some other contributors. Content: PRIMES  ACT 0007 Calculate ~8000 prime numbers for speed measuring   MAUS    ACT 0002 Try to attach a mouse to 800 XL GRADEMO ACT 0002 use Plot, Drawto GUESSNUMACT 0005 like ist says SYSSTACKACT 0007 how to make your own CPU stack TSTSTACKACT 0012 how to make your own CPU stack SYSSTRX ACT 0009 ... SYSSTRNGACT 0027 TSTSTRNGACT 0004  TSTSTRX ACT 0003 REAL    ACT 0031 how to handle real numbers...
Topic: atari 800 ACTION! source code yar's revenge collection library
Manuals: Atari
Aug 24, 2020 unknown
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early versions of the Atari ST didn't have a real clock. Every time you switched of the machine the clock had to be set again.  There were several workarounds for this issue until Atari Corp finally came up with a new model that included a battery buffered clock. I also have a radio synchronized clock via DCF-77, where the Atari get's the time via 77 KHz pulses, after decoding it was the first ultra precice clock. This manual describes how to install such a clock in the Atari STs. The chip...
Topic: Atari ST addon 260 ST 520 clock IC RP5C15
Mike.2000 Favorites
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Aug 22, 2020
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Mike.2000 Favorites
Topic: favorites
Community Software
Aug 20, 2020 Mike Sandau
software

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after refurbishing this old PCB and updating it with "the latest" SW, this  schematic was created.  THE CART (and many others with FLASH) is surely the better way to do this. Back then we worked with EPROMS, which is outdated technology. For me, the result is the same : pluging in a cartridge and selecting which program to load. This cartridge holds 64 KB of read only memory. See the PDF for a detailed schematic. The memory management info can be taken from here: ...
Topic: Atari 800 cartridge Supercartridge M034 M043 091M bank switching OSS
Community Software
Aug 16, 2020 Mike Sandau
software

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  EXTENDED RAM TESTER     for Atari 130 XE and above Description: -------------  in my 35 year old Atari 800 XL there is an addtional  RAM installed with 64 KB. Recently I started reusing this  machine again for using The Last Word. It can use memory>64 KB.  As I tried it crashed. Not all RAM was usable.  Then I used the DDT debugger and switched the additional banks  and wrote/read some values to it. Soon I discovered that it  basically works. And I observed an effect, values ...
Topic: Atari800 8Bit diagnosis Memory 128KB Hardware RAM expanded
Community Software
Aug 14, 2020 OSS
software

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all existing versions of ACTION! are available in the OSS 091M bank swichting scheme. This version was modified so that it can be used as an M034 OSS cartridge
Topic: OSS Atari8 Atari800 ACTION! Cartridge M043 091M
Manuals: Contributions Inbox
Jul 25, 2020 Mike Sandau
software

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Intention of this App:            this app is meant to be used for your still operating           Atari 8 bit Computer.           It's sad but true: but your Atari is out of work! To give           it back something to work on and to give you a new purpose           for the machine I created this app.            The intention of the application is not a demo neither a           game. There are already unbelievable great demos out...
Topics: atari 8 bit, atari800, homebrew, demo, relax, screensaver, assembler, VBI, DLI, P/M, Sprites, new...
Atari 8-bit Computer Manuals
Dec 1, 2019 unknown
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ROM Wizard was a German  add-on board, which is installed in the ATARI 400/800. It provided: Four DIL sockets to plug in ROMs One EPROM carried a monitor program similar to OMNIMON A parallel printer support via Centronics connection on Joystick port 3+4 P: printer driver for the ports socket to plug in your homebrewed Atari OS Two of the versions contain the ROM components of the original operating system. Another version is for a type 2764 (8K * 8) EPROM that includes a new operating system....
Topics: atari 8 bit, atari IOCB, Atari 800, Atari printer, Atari operating system, Monitor, Omnimon
Me and my friends were involved in creating the hardware and the software. We were pioneering in Germany. This version V4.7 was written in ACTION! Hardware features: Modem connecting Atari and Radio. Baudrate limited by CB radio bandwidth. Modulation: PSK about 800 bit/s achived Controlling PTT of CB radio, using 1010 cassette motor control signal  Connected to SIO serial like a floppy drive with the same RX/TX lines  Also hardware enhancements like blinking LED if message arrived or...
Topics: atari 8 bit, atari 800, CB radio, homebrew project, hardware, software, ACTION!, modem, accoustic...
Software Library: Atari: Contributions
Oct 6, 2019 Simon Trew
software

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My daughter and I fell in love with this cute screensaver. And I had to have one to demonstrate the sharp picture of my new Sophia graphics card. There was just the  annoying ATTACT mode still active - and it changed the colours of the animal to really bizarre healthstates! (The dark pig of death) So I made an update to version 1.1 adding 55 Bytes of machine code after 12 years. It keeps the original colours of the pig and just changes the background colour. It was a rainy day today. Also had...
( 1 reviews )
Topics: atari, 400, atari 800, demo, graphics, screensaver, assembler, atari software library, cute,...
Software Library: Atari: Contributions
Sep 9, 2018 Kemal Ezkan
software

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Kemal Ezkan aka Yoda Zhang is a famous poineer in creating higher quality music on mostly Atari 8 bit computers. Also Yoda created lots of games too, that can be seen on his homepage in german. Up to now he's still into programming games the way we loved them back then and that aren't available any more - except here! Playable in a browser window you can enjoy these easy and enterteining games now. Super Snthesizer consists of a two sides Atati 8 Bit disk with 410 sektors each.  The two disks...
favoritefavoritefavoritefavoritefavorite ( 1 reviews )
Topic: Atari Basic Sound demo 8-Bit 1984 Popsongs classic songs
Bulletin Board System (BBS) History
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This is a collection of various BBS (Bulletin Board Systems) articles posted in the time between 1985 to 1988. Downloaded by modems and couplers that could go as fast as 2400 bits/s (!) These texts were public to everyone back then like if you would post an article in an internet forum today. It was a form of digital newspaper for computer enthusiasts that were the first ones to create something that later became the internet. But most of them were forgotten because the BBS were shut down. ...
Topics: BBS, Datex-P, BNT Stuttgart, PFM Stuttgart, A.U.G.E, Apple Users Group Europe, MicroTalk Stuttgart,...
Software Library: Atari: Contributions
Jun 11, 2018 various
software

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Various titles of Atari Basic examples, found on  PD diskettes. Some of them I liked playing.
Topics: Atari 800, Atari Basic, ATR, ATR Image, Games
Software Library: Atari: Contributions
Jun 11, 2018
software

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Fractal generator in TURBO BASIC    !!!  IN 3D  !!!!
Topics: 3D Fractals, Fraktale, Graphics, Atari 800, Turbo Basic, ATR, ATR Image
Software Library: Atari: Contributions
Jun 11, 2018 ?
software

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Atari 8 Bit on Atari 800 XL: one of the first ZIP tools that existed. Compresses files using Huffman algorythm.  Using TURBO BASIC  See https://en.wikipedia.org/wiki/Huffman_coding
Topics: Huffman, Zip, compress, Atari 800, TurboB Basic, ATR, ATR Image
Me and my friends were involved in creating the hardware and the software. We were pioneering in Germany.  Later professional companies introduced the idea as a buyable product. Hardware features: Modem connecting Atari and Radio. Baudrate limited by CB radio bandwidth Controlling PTT of CB radio, using 1010 cassette motor control signal  Connected to SIO serial like a floppy drive with the same RX/TX lines  Also hardware enhancements like blinking LED if message arrived or switching relais...
Topics: Atari 800, CB, Citicen Band
Computer Newsletters: User Groups and Flyers
Mar 3, 2018 Atari Club Duesseldorf
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Software an Hardware bool on Atari 8 Bit
Topic: Software Hardware computer club Atari 800 German
Atari 8-bit Computer Manuals
Mar 3, 2018 PFP
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Drawing Software Manual
Topic: Drawing Software Manual Atari 800