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Mr. Undo

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About Mr. Undo

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  1. Thanks! The site is based on a very customized Wordpress template. So, yes, it uses databases. But all the the content is updated manually, entry by entry, in a similar way you publish posts in a WP site. Marty Goldberg pointed me also to this site yesterday on Facebook. As I told him, Michael Current’s work was the starting point for this project. I cite many of the sources that he points to on his site. Michael Current made a priceless research to create those timelines. This decision was made to optimize the loading time. I have to find a better way, allowing a progressive loading without leaving the lightbox (pop-up) mode. The design is still in progress
  2. So far I have the timeline in draft mode until the end of 1986, pending to be adapted and published. My intention is to keep up with the research and expand the timeline up to the end of Atari Corp’s life.
  3. If you have some spare time and you want to delve a bit into how the Atari ST was conceived and its first months of life, take a look at this website I'm working on: http://atarivt.com/
  4. Besides @Allan effort uploading Current Notes to Archive.org (thanks again, man!!!) there are more CN issues uploaded to archive.org by the Atari historian Kay @Savetz(host of the ANTIC 8-bit podcast) https://archive.org/details/@savetz and Scott Stilphens (the man behind ataricompendium.com) https://archive.org/details/@scottithgames As Allan said, it would be great to have all the Current Notes into one section on archive.org. Meanwhile, there is a compilation of all these Current Notes issues here: http://www.ataricompendium.com/archives/magazines/current_notes/current_notes.html, although the following uploads by Allan are not still registered in the page: MARCH 1986: https://archive.org/details/current-notes-volume-6-number-2-march-1986 APRIL 1990: https://archive.org/details/current-notes-volume-10-number-3-april-1990 JUNE 1990: https://archive.org/details/current-notes-volume-10-number-5-june-1990 SEPTEMBER 1990: https://archive.org/details/current-notes-volume-10-number-7-september-1990 NOVEMBER 1990: https://archive.org/details/current-notes-volume-10-number-9-november-1990 DECEMBER 1990: https://archive.org/details/current-notes-volume-10-number-10-december-1990 MARCH 1991: https://archive.org/details/current-notes-volume-11-number-2-march-1991 DECEMBER 1991: https://archive.org/details/current-notes-volume-11-number-10-december-1991 JUNE/JULY 1994: https://archive.org/details/current-notes-volume-14-number-5-june-july-1994/mode/2up
  5. There is a reference to the Atari second disk here: http://captive.atari.org/Main/ReleaseInfo/ReleaseInfo.php "The Atari ST version came with 2 floppy disks even though the second disk is usually not used. The first floppy is a double-sided disk, but in the case where a system is equiped with a floppy drive that only supports single-side floppies, the second disk will be required to read the unreadable side of the first floppy disk. In other words, the second disk is a copy of the second side of the first disk. When the second disk is required, the system will display a request to insert disk two. A way to see it is by removing the floppy disk during the "Federation War" screen (the bouncing lines) and hitting a key."
  6. @SoulBuster Thanks for sharing and the preservation effort!
  7. And this one: Atari Mega STE with 1mb memory and hard disk. Mouse and manual included. Cleaned and tested. Box of floppies included. Sold for EUR 500 / aprox. $604
  8. @calimero You’re right. So, this one: Atari Mega STE 4MB Computer Atari SC1435 Monitor Atari Mouse and Keyboard - sold for EUR 1260 / aprox. $1,522
  9. There is also a C07115 REV 2B PCB https://imgbb.com/7KLXgY3 not listed here: https://temlib.org/AtariForumWiki/index.php/Atari_ST_motherboard_revisions
  10. Maybe I didn’t explain myself very well here. In this case I’m wondering if there’s any other variation (besides the change in ROM) between this specific PCB (C07115 REV 2) and the drawings of the schematics I’m referring in this topic, which are numbered C07112. Regarding PCB versions, you’re right, the list is long. Here is a good compilation, maybe still incomplete: https://temlib.org/AtariForumWiki/index.php/Atari_ST_motherboard_revisions 😂
  11. The earliest 520ST motherboard found up to now is labeled as C070115 REV. 2 The schematics found have drawing number C070112. Really close!. Besides the change of ROM, (192K in 6 32K chips instead 128K in 2 64K chips) I don't know if there's any other variation
  12. I let here the schematics I've just uploaded to archive.org (drawn on Jan. 29 and Feb. 4 '85) and the already known schematics for the 520ST/260ST (drawn on June 5, July 16 and July 22 '85). It would be great if someone who can fully understand these schematics could tell us the differences Atari_520ST_Schematics_Jan_Feb_1985.pdf Atari_520ST_Schematics_Jun_Jul_1985.pdf
  13. Hi! A few weeks ago I discovered a pair of schematics of the 520ST on eBay. Looking at them in detail it struck me they still included a 128K ROM in the design and the fact that they were drawn at a very early date, January and February 1985. These aren't any of the 520ST schematics that can easily be found on archive.org or any of the existing online Atari repositories so, although they are just copies of the originals, I decided to adquire them. They have a lot of historical significance as they are the first ST schemes that we have evidence of so far. I've scanned them at high resolution, cleaned and uploaded to archive.org https://archive.org/details/atari-520-st-schematics-jan-feb-1985 PS: I say they are almost unknown because in 2009 @Cebus Capucinis found these same schematics inside the box of a 520ST that he acquired in 2009 and uploaded some images of them in this forum. This is the only previous reference I have been able to find on these schematics.
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