On Sat, Sep 19, 2020 at 07:19:46PM +0200, Eric Auer wrote: > > Hi again :-) > > >>> > >>> https://retrocomputing.stackexchange.com/questions/1452/only-drive-a-detected-with-two-floppy-disk-drives > >> > >> It says controllers after 2003 tend to no longer support > >> more than one drive at the same time. From when is yours? > >> The computer mentioned on stackexchange is circa 2009. > > > > From what I see on the page > > http://www.asrock.com/mb/SiS/K7S8XE%20R3.0/?cat=Download&os=XP#BIOS > > the earliest BIOS update is from 2003/7/21, so around that "dangerous > > landmark", unfortunately > > ... > > >> So the menu actually DOES talk about TWO drives? > > > > Yes. > > Then there must be a way :-) > > > https://www.vogons.org/viewtopic.php?f=46&t=36942 > > Images are no longer available. > > > > https://www.pcreview.co.uk/threads/chinon-5-25-floppy-fz-506-jumpers.1942441/ > > > > https://nfggames.com/X68000/Documentation/Floppy%20Drives/Chinon/FZ06%20jumpers.pdf > > Thinking about the Drive Select jumpers: In 5.25inch > times, it was common to use cables which flipped a > few wires between both drives, so you had jumpered > BOTH drives to be "A:" but the one at the flipped > end of the cable would still get a different number. > > https://i.ebayimg.com/00/s/Njk0WDg5Mw==/z/AQoAAOSwYlRZLwkr/$_1.JPG?set_id=880000500F > > https://images-na.ssl-images-amazon.com/images/I/41HYsKSB4ML.jpg > > Here is a schema what the flipping does: > > http://www.minuszerodegrees.net/images3/floppy_crossover_cable_wiring.jpg
Yes, I understand that "flipping" cancels the need for different jumpering of two drives, but: - in my particular case "motor" is properly addressed; when I want to access drive selected as A:, its motor spins - and similarly trying to access B: - during my play with jumpers of course I was able to "spoil" the addressing to make both floppies spin (at the same time) during attempt to access drive A: - the problem is: it says "General failure" AFTER it spins B:drive's motor in supposed read attempt My conclusion is that drives are properly addressed, just data transfer from actual drive B: doesn't occur, probably -- regards, Zbigniew _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
