+Larry Posted October 23, 2017 Share Posted October 23, 2017 That's great, Steve. Presume you can copy, read, and write to those disks ok? Those cables can bite! -Larry Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted October 23, 2017 Share Posted October 23, 2017 (edited) good you are ready for more.... 8 inch 5 inch and 3.5 inch have inverted switches for certain control... we either mod the drive, the cable, the controller and/or the code to finish the job... https://majzel.blogspot.com/2009/04/converting-from-8-to-35-inch-floppy.html http://www.classiccmp.org/dunfield/img/index.htm http://retrotechnology.com/herbs_stuff/drive.html http://matthieu.benoit.free.fr/Intel_iPDS100_resources.htm https://groups.google.com/forum/#!topic/comp.os.cpm/QvLjVP6c_hM and for giggles a floppy drive jumpers reference for 3.5's all ancient info and will give a person at a firmware mod.... 3.5 diskette jumpers.pdf and for some more understanding of some why's and how's Model4_35_Drives.pdf I cant find the 8 inch jumper config for all density on a drive but it required minimal mod and just just a bit of jumper block trickery to do....but that was for 8 inch... there is a link missing and I can't for the life of me think of or find it either. It will turn up of some one will find it.. you will find the group discussion informative and can glean correction and experiences from it... good info all being lost to time Edited October 23, 2017 by _The Doctor__ 1 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted October 23, 2017 Share Posted October 23, 2017 (edited) That's great, Steve. Presume you can copy, read, and write to those disks ok? Those cables can bite! -Larry Yep. As long as a disk formats without any bad sectors I'm good to go. The floppy cable I originally made for the ATR8000 eventually wore out. Years of attaching/dettaching. By the time I needed a new cable parts were not something I could just pick up an Radio Shack. I found a few AT floppy cables and one of them was unkeyed, necessary for the ATR8000 end. At some point I added a 34 pin header to try these 1.44MB mechs. When I tried again this past weekend I discovered the retaining clip for the IDC is missing. Only friction is holding the connector in place. I guess "the bite" (of the IDC) is what is keeping me in business. It's not going to hold up for long though. It took me 20 years for to accidentally get 1.2MB drives working on my ATR8000. It was a tip (putting tape over the HD holes) that did it this time. I can now check off 3.5" drives from my imaginary to-do list for the ATR8000. 8088 copressor and HDD interface were on there at one time but it would be too costly and it's plain too late to bother. I have a little trinkett that I cobbled together recently. It's a homebrew Strikelink wifi modem. Actually there wasn't much homebrew about it. Just a Nodemcu dev board with the Strikelink firmware. Works great connected directly the SIO port but as one last ATR8000 project maybe I'll try connecting it, or rather a second one, to the ATR8000. I still have several MAX233 ICs and probably a couple of 14C89s kicking around. Edited October 23, 2017 by a8isa1 1 Quote Link to comment Share on other sites More sharing options...
talanthalus Posted January 4, 2018 Share Posted January 4, 2018 I'm happy to find this thread. Years ago, I'd started working on getting 3.5" 1.44M drives working with my ATR8000 (I have two also.), but I ended up running out of time and interest back then. Now, I'm just trying to remember how anything works. At one point, I was running two dual 8" drive cabinets off one of mine for my BBS, but I've long since allowed the 8" drives to disappear, even though I have boxes of disks still. Once I figure out how I want to set everything up again, I'll fire up the ATR8000s and see what happens. I definitely have a lot of reading to do to catch up. 1 Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted January 5, 2018 Share Posted January 5, 2018 I dont think I ever had a 3.5 on my ATR (when Ihad it), but CP/M is so flexible with the DPB that almost anything is possible. Quote Link to comment Share on other sites More sharing options...
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