If it came with a cable, it's probably a working cable. But if it's home made, maybe it's not polarity keyed and it's possible to plug something in backwards? Or it might be missing 1/2 of a 2-part cable.
Can you take a picture of it? It's also possible to have a bad drive. Myself and someone else have had bad original dvi drives just in the last few months. Do you get sensible prompts on the TV? Specifically, do you get the copyright notice after closing the drive door? That would prove that the drive is working at least that much. If the drive is bad you can replace it by looking for any 360k drive, 360k not 1.2m. (the original drive is really 180k, basically a 360k drive with only one read/write head, but you're not going to find one of those) Did you follow the boot procedure from the manual exactly? The order of the steps matters, and when it's all done and worked correctly, there is very little evidense to show that it worked. The available memory drops by about 5k. Other than that it doesn't look like it's working. The TV screen will be just black, and the M100 will be at the main menu. But if you go into BASIC and type "SCREEN 1,1" then you'll know if it's working. The order is: Power-on TV, Power-off both M100 and DVI. Disk out of drive. Drive door open. Power on M100. Ctrl-break-reset M100. (This will wipe all ram. You don't usually have to cold reset and wipe all ram, but do it this time) Power on DVI. Wait for prompt on TV. Follow prompt on TV to insert disk and close drive door. Press the reset button on the M100. Just reset, not ctrl-break-reset, and just a momentary press. The TV should go black and the M100 should be at the main menu now. Go into basic and try any of the dvi commands like screen or lfiles. -- bkw On Wed, May 9, 2018, 8:44 AM Jesse Huyett <j...@huyett.us> wrote: > Hello all, > Finally got some time and was able to test using the cable my DVI came > with and the M102 mentioned in the "Tandy Model 102 Portable" thread. > The cable I made for the M100 isn't working, but remaking will be a > project for another time. > > Big thanks to Brian for the disk. Great to see a successful bootup of the > system. > > Regards > > > On Sat, Apr 28, 2018 at 1:46 PM, Brian White <bw.al...@gmail.com> wrote: > >> I don't remember what exactly the floppy controller needs. Maybe it just >> needs to be able to do double density. >> >> Steven Adolf has a a downloadable image of the later version disk that >> supports both 100/102 and 200. >> >> http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/DVI%20boot%20disk%20files >> >> You need Teledisk (and probably DOS or at least Windows XP or lower), and >> an old floppy controller and a 360k drive to write the image. >> >> There are some 1.2m drives that can mostly fake 360k, but even if they do >> double density signal strength and rpm and kbps and write compensation, and >> double-step the head to do 48 tpi, there is still the problem that the >> physical drive head is a 96 tpi drive head and writes thinner tracks, >> leaving whole full tracks untouched in between, which can be full of noise >> or old data that would screw up when a wider 48tpi drive head tries to read >> it. So really, a 1.2m drive & controller than can do 360k, is really only >> good fro reading the old disks in a new drive, not for writing and >> certainly not for formatting. >> >> I have a little info on a few drives I actually tested myself here: >> http://tandy.wiki/Disk/Video_Interface:_Drives >> and the cable >> http://tandy.wiki/Disk/Video_Interface:_Cable >> >> I think we discussed it here recently and someone had some more >> definitive knowledge than this, but I can't find it right now. >> >> -- >> bkw >> >> >> >> >> On Apr 27, 2018 11:16 PM, "Jesse Huyett" <j...@huyett.us> wrote: >> >> Hello Brian, >> Thank you for the response. >> >> > the right kind of drive but also the right kind of floppy controller >> I have been looking but been unable to find any info on this. If you >> have any pointers or documentation, I can try to make my own. Otherwise, ... >> >> > just send me an address and I'll mail you a disk. >> I can send you floppies, I can pay shipping (Paypal, Google Pay, check, >> ... ), ... Let me know what I can do. >> I'll send a PM with my address. >> >> Thanks again and super appreciate the offer. >> >> Regards, >> Jesse >> >> >> >> >> On Fri, Apr 27, 2018 at 11:57 AM, Brian White <bw.al...@gmail.com> wrote: >> >>> It's possible to write a new floppy from a download IF you have not only >>> the right kind of drive but also the right kind of floppy controller on a >>> motherboard or isa card. >>> >>> Otherwise just send me an address and I'll mail you a disk. I happen to >>> have a dvi set up and working at the moment so it's not inconvenient. >>> >>> -- >>> bkw >>> >>> On Apr 27, 2018 2:22 AM, "Jesse Huyett" <j...@huyett.us> wrote: >>> >>> Hello All, >>> I have a Tandy Model 100 Portable with the DVI (Disk Video Interface). >>> I built a cable for it I haven't been able to test since I haven't found >>> a way to create the boot disk. >>> >>> I found a download of the files at club100.org ( >>> http://club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/DVI%20boot%20disk%20files >>> ), but haven't been able to figure out how to create a boot disk from the >>> images - I do have access to older computers with a 5 1/4" floppy drive. >>> Also tried writing the disk image to an HxC figuring I can hook this >>> into the DVI, but the HxCFloppyEmulator software doesn't recognize the >>> image format. >>> >>> Ideally, I'm looking for a cable (in case I didn't make mine correctly) >>> and a boot floppy. >>> At minimum, wondering if anyone has experience creating a boot floppy or >>> getting it to write to the HxCFloppyEmulator software. >>> >>> Regards >>> >>> >>> >> >> >
