Great info Jerry!
Jeff Birt From: M100 <[email protected]> On Behalf Of Jerry Davis Sent: Monday, May 24, 2021 11:32 AM To: [email protected] Subject: Re: [M100] DVI + Floppy Emulation Yes. I attached one to my DVI a few weeks ago. I purchased a Gotek SFR1M44-U100 from Amazon. The Gotek is a 3.5" drive format. To mount the Gotek into the 5.25" drive bay that the DVI has I also purchased the following: (1) Startek 3.5" to 5.25" front bay adapter (Amazon) (1) Kentek 6" adapter from 4-Pin Male Molex 5.25" drive power connector to 4-pin Female 3.5" drive power connector (Amazon) (1) 34-Pin Card Edge to IDC Connector Adapter - 5.25" to 3.5" Floppy Cable (eBay) (1) Gigastone Z90 32GB USB 3.1 Flash Drive (Amazon) The flash drive I purchased is very short. I didn't want a USB drive sticking way out from the front because it gets in the way. 32GB is massive overkill in terms of space for disk images but that's what was available in a small package for a good price. I installed the latest version of "flashfloppy" by Keir Fraser (and many other contributors) onto the Gotek using the instructions on the flashfloppy Githib Wiki. The Gotek I received had the Artery chip installed which required a special build at first but I believe is now supported on the newest builds. I saw a note on the flashfloppy discussion board that folks were having fewer problems with Artery-based Gotek drives when using flash drives supporting USB 3.1. That's why I made sure I bought a USB drive with USB 3.1. That may be the standard today so getting USB 3.1 may be unavoidable. I loaded the flashfloppy software onto the Gotek using the instructions and Youtube links contained in the flashfloppy Github Wiki. Some Gotek hardware versions have to be programmed with a USB-to-TTL cable attached to header pins you soldered to the Gotek board, other hardware versions could be programmed using only a USB-to-USB cable. The Gotek hardware is subject to change so be sure to check the Wiki for the hardware version you receive. There is a lot of information on Gotek programming and hardware upgrades that will help get you going on Youtube. To start, I kept the original 180K floppy installed as Drive 0 and the Gotek installed as Drive 1. I copied the DOS system disk over to the Gotek and then reversed the drives. My DVI now boots from the Gotek, and the physical floppy drive is available for creating floppy images from physical media. Switching between the system disk and an application disk is done by pushing the image selector buttons and cycling through the images on the flash drive. The hardware upgrades available for the Gotek include adding an LCD display and a rotary encoder. I didn't do any of these as I wanted to make sure I could get the stock Gotek running before attempting any modifications. I may go back to these at a later date. My FF.CFG which configures flashfloppy features is mostly stock and contains the following entries: interface = ibmpc host = unspecified pin02 = nc pin34 = nc write-protect = no side-select-glitch-filter = 0 track-change = instant write-drain = instant index-suppression = yes head-settle-ms = 12 motor-delay = ignore chgrst = step ejected-on-startup = no image-on-startup = last display-probe-ms = 3000 autoselect-file-secs = 2 autoselect-folder-secs = 2 folder-sort = always sort-priority = folders nav-mode = default nav-loop = yes twobutton-action = zero rotary = none indexed-prefix = "DSKA" display-type = auto oled-font = 6x13 oled-contrast = 143 display-order = default display-off-secs = 60 display-on-activity = yes display-scroll-rate = 200 display-scroll-pause = 2000 nav-scroll-rate = 80 nav-scroll-pause = 300 step-volume = 10 da-report-version = "" extend-image = yes My IMG.CFG file which defines the cylinders, heads, and sectors for the 180K disk format used by the DVI looks like: [*.m100dvi.img] cyls=40 heads=1 secs=18 bps=256 h=0 The configuration above works for me but could probably be tuned for better performance. I was able to format virtual disk images, write files to the images, and read files from the images with no issues. The DVI DOS copy and backup utilities all worked as expected. Hope this helps you. Jerry On Sun, May 23, 2021, 7:21 AM Dan Eicher <[email protected] <mailto:[email protected]> > wrote: Anyone using a GoTek or HxC floppy emulator with a Tandy DVI?
