Yes, they are 1.44 (diskettes and drive) formatted to 180k as the original 5.25" drives. I had to use drives with drive select jumpers and set drive 0 and 1 on each drive. I created the original boot diskette with a PC and then made others using the DVI.
There is switching that can be done using the M100 cassette port to control side switch, but that has too much risk to the DVI for my taste. I'd rather try the emulator before hacking the DVI to swap sides on a diskette. Only hacking I might try on the DVI is a new ROM to allow SSDD. DS is certainly out of the question, but maybe some other features could be added via a new ROM; e.g. CP/M? ----- Original Message ----- From: "Brian White" <[email protected]> To: [email protected] Sent: Monday, July 23, 2018 12:41:41 PM Subject: Re: [M100] GOTEK USB Floppy Emulator vs DVI You made a copy of the dvi system disk on 3.5" ? You somehow got a dvi and dvi-dos to use more than 180K per disk side? Or is the dvi just creating bizarrely formatted 3.5" disks that only use the first 40 tracks, or double-spaced evey other track, or something ? It's really using HD disks? (1.44M instead of DD 720K) I guess a 3.5" DD disk (ie: 720K, not HD 1.44M), a single side of that would be 360K on 80 tracks, and 40 tracks of that would be 180K, which would be the same as the original single-sided DD 40-track 5.25" drive & disk. And I think 3.5" always runs at 300 rpm whether HD or DD, same as 5.25" DD (5.25" HD 1.2M runs at 360rpm), so I guess dvi dos and the controller chip & firmware in the dvi could do it that way.
