Hello Brian, Thanks for the detailed response. The cable that came with the DVI was for a M102. I was able to get everything tested and working thanks to the recent pickup of a M102 mentioned in the "Tandy Model 102 Portable" thread. So definitely an issue with the cable I made for the M100 and not a bad drive/ the order of operation/ ...
I did buy the DIP connector through king-cart. I ohm'd out some of the pins in what I made and thinking one isn't connected correctly. Fortunately I bought a few DIPs so I'll hopefully get to try again some day sooner than later. Regards On Wed, May 9, 2018 at 12:42 PM, Brian White <[email protected]> wrote: > 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 <[email protected]> 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 <[email protected]> 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" <[email protected]> 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 <[email protected]> >>> 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" <[email protected]> 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 >>>> >>>> >>>> >>> >>> >>
