That would be pretty cool! I’ve never seen a modern similar device made for the M100/102
Randy Sent from my iPhone > On Jul 25, 2018, at 9:40 PM, George Rimakis <[email protected]> wrote: > > Has anyone managed to reverse engineer this DVI? > > That would be a neat project. > > ~George > >> On Jul 25, 2018, at 9:30 PM, Randall Kindig <[email protected]> wrote: >> >> Thanks, Brian, that’s very helpful. >> >> Randy >>> On Jul 25, 2018, at 1:12 AM, Brian White <[email protected]> wrote: >>> >>> Randy I never answered your last question about the Model 200 cable. >>> >>> It's these two items: >>> >>> https://www.amazon.com/gp/aw/d/B003PU1EVG/ >>> >>> https://www.amazon.com/Connector-Rainbow-Ribbon-Cable-1-6ft/dp/B00XP54YKE/ >>> >>> These are just representative examples pulled up quickly from amazon on my >>> phone. You can get the same things lots of different places including ebay >>> and digikey etc. >>> >>> That's it. You just stick the gender changer into one end and stick that >>> end into the 102 or 200. >>> >>> For polarity assurance, just keep the cable flat all the way to the >>> computer. >>> >>> That's it. No soldering, and the lack of polarity key on the computer end >>> has an easy answer. And that cable works the same on both 102 and 200. >>> >>> I mean it can buch up or fold or loop any way it wants once it's connected, >>> but just imagine both the DVI and the computer are sitting on a table, with >>> the back of the computer facing the front of the DVI, and both boxes are >>> sitting right-side up on their feet. From that starting position, the cable >>> travels from under the front of the DVI to the computer without twisting or >>> folding over. Whichever side of the cable is the bottom at the dvi, is also >>> the bottom at the computer. If it was a grey cable instead of tha rainbow >>> one, you could write "bottom" & "top" or "up" & "down" right on the cable >>> at the computer end with a sharpie, and that would be enough for even an >>> unsuspecting future owner to get it right safely. The DVI end is polarity >>> keyed so you don't have to worry about that end. >>> >>> The only remaining annoyance with that cable is when you pull the cable out >>> of the computer, the gender-changer pins are just as likely to stay in the >>> computer as stay on the cable, and then they are a little difficult to get >>> out of the computer because there is nothing to get a grip on. So you might >>> want to use a tiny (tiny!) bit of super glue to keep the pins in the cable. >>> Just enough to stick the two black plastic parts together, but try to avoid >>> letting super glue wick and travel down into where the pins make contect >>> inside the connector on the cable. >>> >>> Thanks to Mike Stein for the clue about the effect that kind of >>> straight-through doulble-ended pin header ends up having on the pin mapping >>> when you use one to butt two female idc plugs up to each other. It ends up >>> having the same effect as the twists in the normal cable. >>> -- >>> bkw >>> >>>> On Tue, Jul 24, 2018, 8:10 PM Randall Kindig <[email protected]> >>>> wrote: >>>> I currently have 2. Until a few months ago I didn’t have any and had >>>> never seen a working unit. Now I have 2 great working units. >>>> >>>> I allows the M100/102 to display on a monitor rather than the small LCD. >>>> It also gives it one or 2 disk drives. They are great, if finicky. >>>> >>>> Randy >>>>> On Jul 24, 2018, at 7:42 PM, Ken Gregg <[email protected]> wrote: >>>>> >>>>> >>>>> I see one of these units up for auction on ebay right now: >>>>> https://www.ebay.com/itm/Radio-Shack-Tandy-TRS-80-model-100-disk-video-interface/223062580269 >>>>> >>>>>> On 7/24/2018 12:25 PM, [email protected] wrote: >>>>>> Oh! Well I've owned my M100 for years now and I had never seen the DVI. >>>>>> Are these rare? What advantages does this give over a stock M100 with a >>>>>> floppy drive? I gave a REX in mine, worth its weight in gold! >>>>>> >>>>>> Thanks for the replies guys, I still ashamed I didn't know what DVI was. >>>>>> >>>>>> Are these rare? Do many on the group have them? >>>>>> >>>>>> >>>>>> >>>>>> Sent from my iPad >>>>>> >>>>>> On 24 Jul 2018, at 8:12 pm, Kurt McCullum <[email protected]> wrote: >>>>>> >>>>>>> DVI = Disk Video Interface. It expanded the 100 or 200 with a 180k >>>>>>> 5.25" disk drive and an external monitor. Attaches to the system bus >>>>>>> and has it's own DOS. >>>>>>> >>>>>>> Kurt >>>>>>> >>>>>>> >>>>>>> On Tue, Jul 24, 2018, at 12:07 PM, [email protected] wrote: >>>>>>>> Perhaps I missed the memo, but I'm not familiar with DVI. Other than >>>>>>>> it being a firm video output. >>>>>>>> >>>>>>>> What is DVI in relation to the M100? >>>>>>> >>>>> >>>> >>
