Yeah that's what the home-made T102 cable that came with my dvi looked like. A regular ide cable with the middle connector still on, and a bunch of pins jammed into the connector on one end to make it male.
A proper pin header would make a pretty neat "no building" answer, except for not being keyed to force the right polarity. -- bkw On Oct 24, 2017 9:27 AM, "Stephen Adolph" <[email protected]> wrote: > for what it is worth, I seem to recall being able to use a standard IDE > HDD cable, with a long pin header for T102 <--> DVI. maybe I recall > incorrectly though. > > On Tue, Oct 24, 2017 at 9:07 AM, Brian White <[email protected]> wrote: > >> >> My new cable is like you say on the right. >> >> ---- >> >> For instance: >> >> * The Model 100 tech ref >> http://www.classiccmp.org/cini/pdf/Tandy/Model%20100%20Tech% >> 20Reference.pdf >> page 28 >> (also the service manual >> http://www.classiccmp.org/cini/pdf/Tandy/Model%20100%20Serv >> ice%20Manual%20(Final).pdf >> page 35) >> >> Says AD0 is pin 3 on the 100 >> >> * The DVI service manual >> http://www.classiccmp.org/cini/pdf/Tandy/Disk%20Video%20Inte >> rface%20Service%20Manual.pdf >> page 70 >> >> Says AD0 is pin 6 on the DVI >> >> ---- >> >> Similarly, I've now built a T102 cable with the twists. >> https://photos.google.com/share/AF1QipMkzQNqSYNaG6XGROBssfEm >> XJ5kj3-Kv-gOHMuqPQJdSUloL8ZpSs83D-tcocw8jA?key=ZzRJQnlPVXlsR >> VZJVGE1ZXlKdkpoYnlvTUh0NjhB >> >> * The T102 tech ref >> http://www.classiccmp.org/cini/pdf/Tandy/Model%20102%20Tech% >> 20Reference.pdf >> page 20 >> >> Says AD0 is pin 5 on the 102 >> >> And sure enough, this cable constructed this way, pin 5 on the T102 end >> goes to pin 6 on the DVI end. >> >> This cable visually matches up with the old ebay one too, which we can >> only assume was good. >> (I didn't buy this cabel, just downloaded the pics while the ad was still >> up) >> https://goo.gl/photos/Sm8xx3Ys2vJwpQYu7 >> >> ---- >> >> To me this corroborates the M100 cable, because it shows that both cables >> deliver the same signal to the same pin at the DVI end, and I think there >> is no argument about how to make a T102 cable, and this T102 cable also >> appears to agree with the tech references. Everything is consistent with >> everything else. >> >> This also reasserts my initial idea that they designed the DVI pinout >> specifically to accommodate the fact that the DIP connector connects >> pins-to-wires in a different pattern than than regular IDC connectors, >> specifically to allow a flat simple cable using a DIP connector like that, >> and why the T102 & 200 needs twists. >> >> I've now tried both my M100's and my T102, and none of them are booting >> my dvi, but by now, I actually think it's a problem with the dvi even >> though these cables are both new and unproven. The pinouts check out with >> the manuals, my new T102 cable also agrees visually with those pics from >> that old ebay item for a T102 cable. I got my dvi off ebay and never saw it >> actually work, nor did the seller claim it. >> >> -- >> bkw >> >> >> On Tue, Oct 24, 2017 at 1:00 AM, Mike Stein <[email protected]> wrote: >> >>> I must admit that I'm starting to get confused myself but unless I hear >>> otherwise I'm going to stick with my original opinion (Oct 17) that the DIP >>> pin 1 should connect to the IDC header pin 1 which would connect DIP 29 to >>> header 24, not 23. Sounds like your cable connects DIP 1 to Header 2 etc. >>> >>> Correct ? Yours? >>> >> DIP IDC DIP IDC >> 1 1 1 2 >> 2 3 2 4 >> 3 5 3 6 >> 4 7 4 8 >> 5 9 5 10 >> 6 11 6 12 >> 7 13 7 14 >> 8 15 8 16 >> 9 17 9 18 >> 10 19 10 20 >> 11 21 11 22 >> 12 23 12 24 >> 13 25 13 26 >> 14 27 14 28 >> 15 29 15 30 >> 16 31 16 32 >> 17 33 17 34 >> 18 35 18 36 >> 19 37 19 38 >> 20 39 20 40 >> 21 40 21 39 >> 22 38 22 37 >> 23 36 23 35 >> 24 34 24 33 >> 25 32 25 31 >> 26 30 26 29 >> 27 28 27 27 >> 28 26 28 25 >> 29 24 29 23 >> 30 22 30 21 >> 31 20 31 19 >> 32 18 32 17 >> 33 16 33 15 >> 34 14 34 13 >> 35 12 35 11 >> 36 10 36 9 >> 37 8 37 7 >> 38 6 38 5 >> 39 4 39 3 >> 40 2 40 1 >> >> >> >
