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| [[File:m100-dvi-2.jpg]] | | [[File:m100-dvi-2.jpg]] |
| [[File:m100-dvi-1.jpg]] | | [[File:m100-dvi-1.jpg]] |
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| | ==Video== |
| | [https://youtu.be/Mt6AmyLKkXQ Basic Usage Example] |
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| ==Manuals== | | ==Manuals== |
| [http://www.classiccmp.org/cini/pdf/Tandy/Disk%20Video%20Interface%20Manual.pdf Manual] | | <!-- [http://cini.classiccmp.org/pdf/Tandy/Disk%20Video%20Interface%20Manual.pdf Manual] --> |
| | [https://archive.org/details/trs-80-model-100-disk-video-interface Manual] |
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| [http://www.classiccmp.org/cini/pdf/Tandy/Disk%20Video%20Interface%20Service%20Manual.pdf Service Manual] | | [http://cini.classiccmp.org/pdf/Tandy/Disk%20Video%20Interface%20Service%20Manual.pdf Service Manual] |
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| [https://archive.org/details/DVI263806Notice 26-3806 Notice] | | [https://archive.org/details/DVI263806Notice 26-3806 Notice] |
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| [https://archive.org/details/TRS80DVICorrectionBASICErrorCodes Correction to BASIC Error Codes] | | [https://archive.org/details/TRS80DVICorrectionBASICErrorCodes Correction to BASIC Error Codes] |
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| ==Boot Disk== | | ==Other Books== |
| [http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/DVI%20boot%20disk%20files Boot Disk files from Steven Adolf on Club100] | | [https://archive.org/details/InsideTheTrs80Model100 Inside The TRS-80 Model 100] |
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| ==Cable==
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| ===For Model 100===
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| Parts:
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| *40pin DIP idc connector
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| :http://www.king-cart.com/phoenixent/product_name=HWS15322
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| *40pin female idc connector, with polarity notch and strain-relief
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| :http://www.king-cart.com/phoenixent/product_name=HWS1877
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| *40pin ribbon cable, 20 inches
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| :http://www.king-cart.com/phoenixent/product_name=HWS16014
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| Assembly:
| | ==System Disk== |
| *Crimp the cable in the DIP connector such that if you are looking at the dip connector with the #1 pin top-left and pins pointing away from you, the cable exits to the right, red stripe on top.
| | There are 2 versions of the system disk, one for Model 100 (and 102) only, and one for both Model 100 & 200. |
| *For the DVI end of the cable...
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| **This assumes you ordered the actual DIP connector linked above, or have another one that connects it's pins to the conductors in the same pattern. Not all do. See note below.
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| **Grab the red wire and the one next to it as a single pair, and peel the pair away from the rest of the cable for about 2 to 3 inches. Repeat for the rest of wires, so the cable ends in 20 loose pairs.
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| **Take a sacrificial IDC connector, with strain relief clip, all snapped together but with no cable, so that the connector makes a thin open slot that's the perfect size for a cable to fit in. This will be used as a wire guide to hold all the loose pairs into their original flat ribbon cable shape so that you can crimp them all in a connector.
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| **Take the 1st pair of wires with the red wire, twist the pair 1/2 way, and insert it into the empty slot, right against one end of the slot, so that there is a grey wire at the edge of the slot, and the red wire is one position in from the end of the slot. Repeat the twist & insert for all the remaining pairs, until the whole cable is in the slot, but with every pair twisted.
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| **Crimp a new female IDC connector on the end of the cable. Make sure the triangle marker for pin-1 is on the red-stripe side of the cable. Wiggle the bundle of cables around a little to settle all those loose pairs into their proper positions before really crimping. It doesn't matter much which way the polarty notch points. There is room for the cable to fold back over the connector under the DVI if it needs to. What matters is that the pin-1 marker is on the same side of the cable as the red wire.
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| [[File:m100_dvi_cable_1.jpg|200px]] | | [[File:DVI_system_disk_1.jpg|200px]] |
| [[File:m100_dvi_cable_5.jpg|200px]] | | [[File:DVI_system_disk_2.jpg|200px]] |
| [[File:m100_dvi_cable_3.jpg|200px]]
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| [[File:m100_dvi_cable_4.jpg|200px]]
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| [[File:m100_dvi_cable_pinout.png|200px]]
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| [[File:m100_dvi_cable_2.jpg|200px]]
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| [https://photos.app.goo.gl/DP01aAsCh7OgFULV2 More Pictures] | | Steven Adolph has dissected and copied the system disk files.<br> |
| | [http://www.club100.org/memfiles/index.php?&direction=0&order=&directory=Steve%20Adolph/DVI%20boot%20disk%20files System Disk files from Steven Adolf on Club100] |
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| ====NOTES====
| | The system disk formatting and files are fully described in the service manual. |
| *This pinout flatly violates the pinout written in the Service Manual for the DVI! Never the less, this is the way it actually needs to be wired.
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| *Some DIP IDC connectors connect pin 1 to conductor 1, and pin 40 to conductor 2
| | Arcadeshopper has copies of both versions of the system disk. |
| :While some others connect pin 1 to conductor 2, and pin 40 to conductor 1.
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| :So, you may possibly NOT need to seperate & twist all those wires, depending on which type of DIP connector you happen to have. | | [https://www.arcadeshopper.com/wp/?page_id=11#!/Disk-Video-Interface-system-disk-26-314-Model-100-102/p/141587103/category=28313042 26-314 for Model 100] |
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| :The DIP IDC connector linked above connects pin 1 to conductor 2, and DOES need to have the conductors split into pairs and twisted. | | [https://www.arcadeshopper.com/wp/?page_id=11#!/Disk-Video-Interface-system-disk-26-3806-Model-200/p/143281618/category=28313042 26-3806 for Model 200] |
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| *More sources for crimp-on dip40 plugs
| | ==Cable== |
| :http://ebay.com/itm/182240437070 | | [[Disk/Video Interface: Cable|Cable]] |
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| ===For Model 102=== | | ==Drives== |
| Parts:
| | [[Disk/Video Interface: Drives|Drives]] |
| *40pin boxed male idc connector, with polarity notch
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| :http://www.king-cart.com/phoenixent/product_name=HWS15924
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| *40pin female idc connector, with polarity notch and strain-relief
| | ==ROM dumps== |
| :http://www.king-cart.com/phoenixent/product_name=HWS1877 | | [[File:M40_P.bin]] is the main rom<br> |
| | [[File:M17 CG.bin]] is the character generator<br> |
| | https://drive.google.com/drive/folders/1yqVh_mj5vtBJhYng-Uitvsjnykq0Knnt |
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| *40pin ribbon cable, 20 inches
| | ==Wonderful Hacks from Days Gone By== |
| :http://www.king-cart.com/phoenixent/product_name=HWS16014
| | [https://raw.githubusercontent.com/LivingM100SIG/Living_M100SIG/main/M100SIG/Lib-09-PERIFERALS/DVI2ND.INF Use the cassette motor control to use both sides of a double-sided drive!] |
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| Assembly:
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| *Crimp the male connector on one end of the cable. Make sure the red wire goes on the Pin-1 marker on the connector, and ideally put the polarity notch at the end of the cable.
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| *On the other end of the cable, same as for the DVI-end above for Model 100.
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| :(TODO: Make a new cable and update pics reflecting the following notes.)
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| :Note: These pictures show the wires twisted on the computer end instead of the DVI end. It actually doesn't make a difference where you put the twists, electrically. But it's better to put the twists on the DVI end for a few reasons. The twisted end of the cable is weaker, because the wires have been seperated from each other, making it more likely for individual pairs to have their connections weakened from pulling.
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| :*Neater looking. The twists are hidden under the DVI.
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| :*The DVI end suffers a less flexing than the computer end, because the computer moves around more than the DVI, and the computer end of the cable is handled more than the DVI end.
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| :*The female connector on the DVI end has a strain relief clip.
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| :*The socket in the DVI has latches that eject the connector out without having to pull on the cable.
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| [[File:t102-dvi-1.jpg|200px]]
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| [[File:t102-dvi-2.jpg|200px]]
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| [[File:t102-dvi-3.jpg|200px]]
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| [[File:t102-dvi-4.jpg|200px]]
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| [[File:t102-200-dvi-pinouts.png|200px]]
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| [https://photos.app.goo.gl/rJI6McVf9jRmI7Is2 More Pictures]
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| ===For Model 200=== | | ==Search the entire M100SIG archive for anything related to the Disk/Video Interface== |
| | | https://github.com/LivingM100SIG/Living_M100SIG/search?q=Disk%2FVideo |
| The Model 200 needs the same wiring as the 102, but the boxed male idc connector for the 102 above does not fit in the Model 200.
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| The simplest way to make a working cable for 200 is to use a cable with female IDC connectors on both ends (most ordinary IDE cables work), and then add a [http://www.ebay.com/itm/272898119517 gender-changer male pin header] to the computer end.
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| This is not ideal, because the resulting assembly is not polarity keyed, and the male pins are not protected from shorting or bending, and the pin header sometimes stays in the computer when you remove the cable instead of coming out with the cable, requiring you to pry it out with something.
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| But it's very simple to put together, especially if you use an ordinary IDE cable, you don't even have to crimp the connectors yourself. Just buy the pin header and stick it in any common pre-made IDE cable. And, this cable works on Model 102 exactly the same as Model 200.
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| [[File:T200_DVI_Cable_1.jpg|200px]]
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| [[File:T200_DVI_Cable_2.jpg|200px]]
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| [[File:T200_DVI_Cable_3.jpg|200px]]
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| [[File:T200_DVI_Cable_4.jpg|200px]]
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| [[File:T200_DVI_Cable_5.jpg|200px]]
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| [[File:T200_DVI_Cable_6.jpg|200px]]
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| [https://photos.app.goo.gl/beTUKxXHDnvlLg083 More Pictures for Model 102/200 Easy Cable]
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| The actual original cable for Model 102 & 200 looked like this on the computer end. You can't get this thin close shroud on a crimp-on connector today, only pcb solder.
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| [[File:T200_DVI_Cable_Original_Plug_1.jpg|200px]]
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| ===Quick-n-Dirty neat trick===
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| Another much easier way to get the wires crossed the right way (instead of that tedious and finnicky peeling & twisting 20 pairs), is just join 2 ordinary female idc connectors with a double ended male-male idc pin header. The arrangement of the connectors matters, and the rule is just match up the red stripe from both cables. For 102 & 200, you can dispense with one cable and use the 200 cable above. Thanks Mike Stein for this trick.
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| http://www.ebay.com/itm/272898119517
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| [[File:flip-pairs-idc-cable-trick.jpg|200px]]
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| ==Wonderful Hacks from Days Gone By==
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| [ftp://salsa.net/pub/M100SIG/Lib-09-PERIFERALS/DVI2ND.INF Use the cassette motor control to use both sides of a double-sided drive!]
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