Exploring and data recovery of retro MFM-harddrive скачать в хорошем качестве

Exploring and data recovery of retro MFM-harddrive

Exploring an old MFM-harddrive including full data recovery with just a cheap logic analyzer and an Arduino Nano board. With this project I could successfully extract the whole data from an old MFM-harddrive. The extraction of about 24MB took about 1 1/2 hours. Project data on github: https://github.com/megahelmix/MFMExplore ... Main Windows Forms program! https://github.com/megahelmix/MFMControl ... Arduino sketch for the Arduino Nano board. https://github.com/megahelmix/MFMReader ... KiCad project of the hardware setup - schematic and PCB(optional) Referenced documents in order of appearance: https://www.redhill.net.au/d/4.php ... general description of the involed harddrive NEC D5146H. https://www.ebay.com/sch/i.html?_nkw=... ... ebay search for an MFM controller card https://en.wikipedia.org/wiki/ST-506/... ... MFM Connector pinouts (Wikipedia page of similar ST-506/ST-412 harddrives) https://www.maxlinear.com/ds/sp481e_s... ... datasheet of SP485E RS-485 Transceiver https://www.alldatasheet.com/datashee... ... datasheet of 74LS74 D-flip-flop https://en.wikipedia.org/wiki/Modifie... ... MFM coding (Wikipedia page "Modified frequency modulation") https://www.analog.com/media/en/techn... .. datasheet of Clock and Data Recovery IC ADN2814 https://web.archive.org/web/201005102... ... ST 506/412 OEM manual: Figure 20 - track format. https://en.wikipedia.org/wiki/Master_... ... Structure of a classical generic MBR (Wikipedia page "Master boot record") https://saleae.github.io/logic2-autom... ... Saleae Logic 2 Automation Interface Documentation https://reveng.sourceforge.io/readme.htm ... CRC RevEng documentation Required hardware (just examplary reference sources): https://www.az-delivery.de/en/product... ... Logic Analyzer 8 CH, 24MHz with USB cable https://www.az-delivery.de/en/product... ... Arduino Nano V3 board Additionally required software: https://www.saleae.com/de/pages/downl... ... Logic2 program for the Logic Analyzer https://sourceforge.net/projects/reveng/ ... CRC RevEng program (reveng.exe must be copied into the MFMExplore directory!) https://visualstudio.microsoft.com/de... ... Microsoft Visual Studio (for building the MFMExplore application) https://www.arduino.cc/en/software/ ... Arduino IDE (for building and uploading the Arduino sketch) https://www.kicad.org/ ... KiCad software (for browsing the MFMReader project)