1050 Posted September 7, 2018 Share Posted September 7, 2018 There is an issue with some OS chips that are coded for a different stepper motor timing that may be at fault for the stepper motor error showing up. Wrong OS could easily not be accounted for in the source code for the test disk. A nebulous place for certain, but a reminder that all is not perfect under the Atari umbrella. End of the day, it works flawlessly, there may be nothing that can be done anyway. Outside of extensive code examination and most of us have something better or more fun to do than that. IIRC, the code for the 1050 OS was found to contain some self test errors and a corrected version supplied by a couple of germans long ago. You might want to go there and get a new OS rom burnt with the corrected code to test again? http://atariage.com/forums/topic/273221-dd-disc-track-structure-kryoflux-image/?do=findComment&comment=3917681 The self testing sections begin at FAC4 in the a8_print_tmp3.txt which is the assembly report of that project. 1 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted September 7, 2018 Share Posted September 7, 2018 IIRC, the code for the 1050 OS was found to contain some self test errors and a corrected version supplied by a couple of germans long ago. Interesting idea, I've definitely reacall that particular test PASS with a stock Atari 1050 firmware, but not sure which Rev it was. I have Rev J, K, L all handy on 2732's I'll have to try each and see if any of them fail that test with my drive... It also passes using uploaded stock 1050 mode on a happy drive, again not sure which Rev that uses. Quote Link to comment Share on other sites More sharing options...
repetto74 Posted September 7, 2018 Author Share Posted September 7, 2018 Hi Nezgar, I formatted again the diskette after the speed adjustment and you were right. All tests passed . Thanks a lot the 1050 is back to business! 2 Quote Link to comment Share on other sites More sharing options...
+Nezgar Posted September 7, 2018 Share Posted September 7, 2018 Hi Nezgar, I formatted again the diskette after the speed adjustment and you were right. All tests passed . Thanks a lot the 1050 is back to business! Excellent, congrats! Your 1050 is now in tip-top shape, should be good for another 30 years. Quote Link to comment Share on other sites More sharing options...
repetto74 Posted September 7, 2018 Author Share Posted September 7, 2018 Excellent, congrats! Your 1050 is now in tip-top shape, should be good for another 30 years.  I hope so!! Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted September 7, 2018 Share Posted September 7, 2018 a drive formatted to itself will pass it needs a known good disk from elsewhere to be sure... please understand, Chances are it is perfect but... a bad alignment means it all works on that drive or all drives aligned to it the same alone. These are the cautions I used when explaining some of this. Perhaps I am being too much of a perfectionist. But disks make their way around the world and I like to be sure. If you can load protected electronics arts titles etc you are more than likely golden... -That's my 2 cents, for what it appears to worth. Quote Link to comment Share on other sites More sharing options...
repetto74 Posted September 7, 2018 Author Share Posted September 7, 2018 a drive formatted to itself will pass it needs a known good disk from elsewhere to be sure... please understand, Chances are it is perfect but... a bad alignment means it all works on that drive or all drives aligned to it the same alone. These are the cautions I used when explaining some of this. Perhaps I am being too much of a perfectionist. But disks make their way around the world and I like to be sure. If you can load protected electronics arts titles etc you are more than likely golden... -That's my 2 cents, for what it appears to worth. I will try to dig out some Atari disks somewhere and test the drive with them . Quote Link to comment Share on other sites More sharing options...
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