dl7ukk

Hallo, to understand the Schleife/ Chaos development in GDR here are a few impressions as I experienced them. In 1987/88 the need for floppy drives for Atari computers was very big in the East of Germany, but the required money was very small. So a few friends came to Guenter S. in the Lausitz region of Saxony. They asked him to make the tape system fast-loading capable. So that games without a floppy could be loaded better and faster. Guenter S. comes from mathematics and also had an Atari 8Bit. He started programming Schleife87 and used very simple hardware. Guenther remembers that only one(!) transistor was built into his XC12. For a long time I thought "this transistor" was a changeover with the A302. Today I know that Guenter is right! This probably also explains why the first loop variants (87/88) work with the phase rotated by 180 degrees. The Schleife88 program was then sent to the university in Karl-Marx-Stadt (now Chemnitz). Probably via a computer club in Cottbus. Chemnitz was home to computer scientists (for example SGL). Schleife became Chaos and then Chaos2. At the same time, there were other programs that used the same hardware. I don't know whether these programs were replicas of Schleife or their own developments. Of course, the Schleife/ Chaos programs were also created as modules. Turbo-Star-1 and Turbo-Star-2, for example. These modules contained loader, (re)translator, Schleife/ Chaos for BASIC and also a DOS. There were also other modules (MODUL V.II2JL; S-Meyer-Cardridge-I-1988; Cardridge-II T.Kelm 1988 and others). There is also a T-Loader on one module, presumably for loading via joystick port... The last program I know of for Tape Turbo from Germany is "Turbo-Speed-89-Devilsoft" It is not from the Schleife/ Chaos team, but uses the same hardware. About the hardware... Not only were 1050/ XF551 drives missing, an XC12 was also very, very expensive. Small computers from the GDR (yes, there was such a thing) had a tape interface on board. A normal cassette player could be used as a tape. So some people started to build an interface for ATARI. This also worked. Input -> OpAmp -> A302/ 555 -> Proceed. ok! With time there were more and more XC12. Now these interfaces were built into an XC12 without much thought. This meant that there were two OpAmps in series. OpAmp(XC12) -> OpAmp (Interface) -> A302/ 555. This did not improve the signal but increased the susceptibility to interference ... But - this is my personal impression. Other users will have different experiences. I hope you can understand the translation. The programmes in the appendix are ONLY for demonstration purposes !!! They were on an old disc when I bought an XL dl7ukk Turbo-Speed.zip

Hello Mathy, Please don't make me bigger than I am. I have no training in electronics or programming. At most I am an interested user. I also do not speak English. Only German, but some Germans don't understand that ;-)) dl7ukk

Be careful when using a 555. There are differences in the 555. An additional transistor is installed in the LM555. In the circuit I know for Schleife88 & Chaos, pin 2 is low. "Unlike the NE555, the LM555 reacts in the combination L at 2 and H at 6 with L at the output (line 9). This means that 2 does not have priority over 6, and it is precisely this behavior that is important in circuits in which where 2 is permanently connected to GND. With the NE555, the output would always be H, regardless of 6. LM555, however, allows an H-L change at the output if an L changes to H at 6 and 2 is on L (lines 2 and 9). This is used when the LM555 is used as a sensitive comparator." (Electronics: 555 basics and function; 2008-2020 © Peter E. Burkhardt) Translated with DeepL.com (free version) dl7ukk

I forgot *KAS file is a real tape file only transferred to disk, so NO CAS file, please see in Hex dl7ukk

Hi, I can provide you with a program with input com/ xex file (disk) and output turbo Schleife88 (tape) (Copy an XEX file to tape with DOS and then from tape to Schleife88.) I don't use real tape. I use laptop sound cards or two XL and a board with XC12 board and other possibilities. XL -> D100/7400 -> XE Laptop -> XC12 board -> XE Laptop -> XC12 board -> A302 -> XE .... Did you search for these programs ? Please note!!! Schleife87 (brown) works with a different phase than Schleife88 (yellow) . 0 vs 180 I haven't yet found a Schleife program that uses "real" tape files (starting with 0). There are programs from other developers for this. You can also get the source code, but it will take a few days longer. I would like to remove the names of the developers first. Guenter does not want to be on stage ... I respect that Schleife87/88 = Turbo6000 Why the name Schleife? Because the developer (Guenter) comes from Schleife. And the 87/88 is the year dl7ukk SCHL87TR.KAS TLSTRANS.COM

Hi, I had written the origin under the circuit diagram sorry: Quelle=source Source: The (East) German magazine for radio amateurs, year 1990, number 5, page 228 dl7ukk

Hi Baktra, What are you looking for? I don't understand the translation ... We have (parts of?) the source code from the developer. Maybe I can help. dl7ukk

Hi Chris Yes you can try a TCA345A. There is information where a TCA345A is also used. I have never tried it with a TCA345A. (Source: SGL TH Karl-Marx-Stadt/ Chemnitz). One (!!) transistor used in switching mode is also sufficient. (Source: Guenter S.) I have not tried this variant either. Or you can use the rarely used 2 channel in XC12. I have tried this variant. It works. Please use a clean band Each pulse is sent to Proceed. Noise/crackling too. I use a reset-proof loader for this variant. And press RESET on the pre-tone! Please look at the circuit. You can also bridge C12 . (Source: Dr.J & Michael T.) Translated with DeepL.com (free version) dl7ukk

Hi, there is always too much hardware used for Turbo 6000 (we say Schleife88 or Chaos). Simple goes with this circuit A302 in a XC12. Quelle: FA 05/1990 I replaced the 47K/ 47K voltage divider on A302-PIN2 with an adjustable voltage divider. And adjusted with an oscilloscope for the best result. Nothing more is required! Connection 1 -> XC12 LM324 PIN8 (U1C) Connection 2 -> Atari-Sio PIN8 Motor-Control Connection 3 -> Atari-Sio PIN 9 Proceed Connection 4 -> Atari-Sio PIN 4/6 Ground Unfortunately there are too many software variants, some of which are not compatible. I have not yet been able to test all variants. Unfortunately, it is often not clear whether these variants have been reprogrammed or just given a new label. Whether Schleife/ Chaos can do 6000Bd or not is irrelevant. It depends too much on the low or high in the game. The information whether a low or high is transmitted is determined by the distance from the last high to low change. But Baktra can explain this better. Translated with DeepL.com (free version); I hope Deepl.com has done a good job best regards to manterola dl7ukk

Hi, if it is possible please for Abbuc in Berlin 10 pieces (5+5) Thank you

Hello if it is possible I would like to order 10 pieces Thanks a lot dl7ukk

Apparently not, me neither. But first of all, many thanks to andreasB for providing the replacement forum. Of course, I wonder why the Abbuc Forum has to be out of order for so long. And also why there is no information about our club (also about the forum) on abbuc.social. Keiner mehr da? Have a nice Sunday. dl7ukk

Hi, Is it still possible to get four (4) pieces ? Thanks a lot. Gruß

Hello, one question please, are there any concerns about the security of the server (tnfsd) for the (my) home network? Greeting Andreas Hallo, eine Frage bitte, gibt es Bedenken wegen der Sicherheit des Servers (tnfsd) für das (mein) Heimnetz? Gruß Andreas

Hello, here is a screenshot of my new Freezer2020 Special thanks to Hias for the software 3.11 Greeting Andreas/ dl7ukk

Hallo, If it is possible, please place a collective order for the "ABBUC in Berlin" (AiB - Abbuc Regional Group Berlin) 6-8 pieces with adapter XL/XE (if possible) Thanks Andreas Wenn es möglich ist, bitte eine Sammelbestellung für den "ABBUC in Berlin" (AiB - Abbuc Regionalgruppe Berlin) 6-8 Stück mit Adapter XL/XE (wenn möglich) Danke Andreas

Hi, kannst Du bitte Deinen ersten Beitrag noch(mal) in deutsch schreiben, würde gern beim Testen behilflich sein. Danke! Andreas

Hi "Abbuc in Berlin" Regionalgruppe Berlin hätte Interesse für 4 bis 6 Stück "Abbuc in Berlin" regional group Berlin would have interest for 4 to 6 pieces

"Abbuc in Berlin" regional group Berlin would have interest for 4 to 6 pieces "Abbuc in Berlin" Regionalgruppe Berlin hätte Interesse für 4 bis 6 Stück

Hello tffh, please 5 pieces for me. Regards

.... ungünstiger Zeitpunkt Aber Carsten bekommt das schon hin, da bin ich sicher. andreas

Hello Simius 5 for me, please! Danke andreas

Hi, Are 2 pieces possible for me? Thanks andreas

Hello, I have a change. Please 5 pieces for myself and others ABBUC User. thank you andreas (translated by G)

Hi, this is a good idea please 2 piece for me greetings andreas