I've mentioned this to Mike and he says to give it a try. I've got a few Sony MPF-920 drives I bought from a guy, but I don't know if they work or not. First thing is to test them and see if they work on a PC.
I found a number of pages talking about modifying the drive to work with Amiga or other systems, but this one sticks out:
https://translate.google.com/transl.../index.php/floppy-sony-mpf-920-pour-un-trs-80
I think they are suggesting that the SH1 strap enables controlling the RPM from the cable, but in my case, I just need to make it spin a 360 rpm so that it can look like an 8" drive. Mike is already doing this with the Teac 55 GFR for 5.25" where it replaces an 8" drive and still stores the roughly 330K on it.
Mike also mentioned that it needs to provide an index signal while seeking, but I'm not sure why a drive would ever not provide an index signal while seeking. Wouldn't it take more logic to not do that?
Any other tips or things I should look at before opening one of these drives up? I recall someone mentioning that the FDC interface is an open collector interface.
Mike's FDC manual talks about the jumpers that need to be set and why on the Teac drive, so that is the first place I'm going to start to try to understand what the 3.5" drive "needs to be" though I don't know if all the options needed will be easy to find.
I found a number of pages talking about modifying the drive to work with Amiga or other systems, but this one sticks out:
https://translate.google.com/transl.../index.php/floppy-sony-mpf-920-pour-un-trs-80
I think they are suggesting that the SH1 strap enables controlling the RPM from the cable, but in my case, I just need to make it spin a 360 rpm so that it can look like an 8" drive. Mike is already doing this with the Teac 55 GFR for 5.25" where it replaces an 8" drive and still stores the roughly 330K on it.
Mike also mentioned that it needs to provide an index signal while seeking, but I'm not sure why a drive would ever not provide an index signal while seeking. Wouldn't it take more logic to not do that?
Any other tips or things I should look at before opening one of these drives up? I recall someone mentioning that the FDC interface is an open collector interface.
Mike's FDC manual talks about the jumpers that need to be set and why on the Teac drive, so that is the first place I'm going to start to try to understand what the 3.5" drive "needs to be" though I don't know if all the options needed will be easy to find.