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TIPI - TI-99/4A to Raspberry PI interface development


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#176 RickyDean OFFLINE  

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Posted Fri Oct 6, 2017 9:52 AM

Rev 2 boards arrived last night... They are perfect match in size and alignment to the 32k board :)

attachicon.gifIMG_20171005_210052.jpg

A ton of work to do on the software still, but these should be final boards for the sideport version.

-M@

And one for me....!!!!!  :-D



#177 jedimatt42 OFFLINE  

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Posted Fri Oct 6, 2017 2:31 PM

Please note, there is no queue at this time. There will be a mechanism for that when the time is right, and it will by necessity ignore any posts to the forum requesting one.

However, we appreciate the enthusiams!

-M@

#178 Sinphaltimus OFFLINE  

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Posted Sun Oct 8, 2017 12:06 PM

I think it's safe to say that QUEUE will fill up pretty fast when the time arrives ;)



#179 --- Ω --- OFFLINE  

--- Ω ---

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Posted Wed Oct 11, 2017 12:07 PM

The TiPi is going to be a must have device!

 

I agree I'm going to :lust: ve the side port version.  Now in the future IF there is ever a version for the PEB I'll be all over that too!

Gotta admit, a card with a Rpi attached that basically gives the P-Box a hard drive and WiFi modem... OUTSTANDING!



#180 Tornadoboy OFFLINE  

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Posted Fri Oct 13, 2017 3:27 PM

If you do a PEB version,would it be possible to have it also replace the interface card and fire hose cable with something much smaller and more flexible? 



#181 mizapf OFFLINE  

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Posted Fri Oct 13, 2017 4:03 PM

You cannot easily replace the bus cable. It contains the address bus and the data bus, that is, 16+8 signal lines plus some more control lines that are in tight synchrony with the internal bus lines, up to 166 ns. You would need a system that runs with strong real-time constraints in some higher hundreds MHz area.



#182 digdugnate OFFLINE  

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Posted Sat Oct 14, 2017 4:38 AM

i have been reading through the github stuff and will be watching with much interest. :)

 

i am in awe of everyone that does this level of work on the TI, really.



#183 jedimatt42 OFFLINE  

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Posted Sat Oct 14, 2017 7:06 AM

Tornadoboy:

No.

1st, I'm not interested in that work.
2nd, if we add suggestions like that, the project will never end,
3rd, if you don't like the peb firehose cable, I would recommend you switch to a PC. or Apple product. Just kidding...

The hardware design files for TIPI are all open and available. If this is something you want, go for it!

-M@

#184 jedimatt42 OFFLINE  

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Posted Sat Oct 14, 2017 9:45 AM

The previous message, I'm told came off as "testy"... Oops.

-M@

#185 Tornadoboy OFFLINE  

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Posted Sat Oct 14, 2017 3:04 PM

The previous message, I'm told came off as "testy"... Oops.

-M@

Why you son of a bitch bastard just kidding I figured it wasn't on purpose  :-D  

 

Just thought I'd throw the idea out there, I never pretended to know what I was talking about and knew there was probably a good reason nobody has come up with a smaller replacement, you may toss the idea in the trash and go about your way :) 


Edited by Tornadoboy, Sat Oct 14, 2017 3:05 PM.


#186 --- Ω --- OFFLINE  

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Posted Sat Oct 14, 2017 4:21 PM

I'm just now starting my TIPI prep shopping for a Rpi3-B and have noticed all kinds of extras, kits, add-ons with or without the Rpi itself.

Power supplies, HDMI cables, fans, heatsinks, etc.  Have any of you purchased a specific kit (without the case) that you would recommend? I'd rather not order from 1/2 a dozen individual places.

 

Also, until TIPI comes out... any application packages that would give it something to do?



#187 Shift838 OFFLINE  

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Posted Sat Oct 14, 2017 7:49 PM

I'm just now starting my TIPI prep shopping for a Rpi3-B and have noticed all kinds of extras, kits, add-ons with or without the Rpi itself.

Power supplies, HDMI cables, fans, heatsinks, etc.  Have any of you purchased a specific kit (without the case) that you would recommend? I'd rather not order from 1/2 a dozen individual places.

 

Also, until TIPI comes out... any application packages that would give it something to do?

 

I have ordered this one multiple times and I'm very happy with all of my purchases..

 

HERE



#188 --- Ω --- OFFLINE  

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Posted Sat Oct 14, 2017 10:26 PM

 

I have ordered this one multiple times and I'm very happy with all of my purchases..

 

HERE

 

 

Thanks, I just placed the order!  :thumbsup:



#189 jedimatt42 OFFLINE  

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Posted Sun Oct 15, 2017 7:45 AM

Our goals are that heat sinks, and hdmi cables are not necessary.

But a sufficient power supply is necessary.

We plan to provide sdcard images almost all setup. TI facing software to set up the PI's networking will be provided. And then you will be able to perform any remaining maintenance with ssh from any PC/device on your network.

Eventually I intend for there to be telnet access from the TI to the PI.

-M@

#190 --- Ω --- OFFLINE  

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Posted Sun Oct 15, 2017 8:11 AM

Our goals are that heat sinks, and hdmi cables are not necessary.

But a sufficient power supply is necessary.

We plan to provide sdcard images almost all setup. TI facing software to set up the PI's networking will be provided. And then you will be able to perform any remaining maintenance with ssh from any PC/device on your network.

Eventually I intend for there to be telnet access from the TI to the PI.
 

 

I knew an HDMI cable was irrelevant to the TI/TIPI configuration, but figured I'd play with the Pi before I dedicating it for 100% TI use.

Since they are included, I'll use the heat sinks anyway, but I'm glad to hear a fan will not be necessary.  

 

I'm starting to get the impression that people use different MicroSD cards in these things for different applications/configurations... sort of like how us TI'ers (pre FinalGROM  day's) used to swap cartridges.



#191 ElectricLab OFFLINE  

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Posted Sun Oct 15, 2017 12:51 PM

I'm just now starting my TIPI prep shopping for a Rpi3-B and have noticed all kinds of extras, kits, add-ons with or without the Rpi itself.

Power supplies, HDMI cables, fans, heatsinks, etc.  Have any of you purchased a specific kit (without the case) that you would recommend? I'd rather not order from 1/2 a dozen individual places.

 

Also, until TIPI comes out... any application packages that would give it something to do?

 

There a are a lot of people doing retro gaming on the pi: https://retropie.org.uk

 

I have been a huge fan of the Raspberry Pi since they first came out. I use the old ones for temperature/humidity sensing throughout my house, so the home automation system knows to do things like turn on exhaust fans in bathrooms or laundry room. I hooked one up to a 1920s era teletype to use it as a terminal, which is kind of pointless but fun. I am in the process of replacing the Arduino board with a RPII which I use to detect RFID cards for access to my lab. I used to use microcontrollers for stuff like this but when you get a full Linux stack on an RPI for the same price as a microcontroller board with network interfaces, they're just so appealing.  

 

Of course TIPI will be the coolest use of a Raspberry Pi yet :) 



#192 ElectricLab OFFLINE  

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Posted Sun Oct 15, 2017 12:54 PM

 

I knew an HDMI cable was irrelevant to the TI/TIPI configuration, but figured I'd play with the Pi before I dedicating it for 100% TI use.

Since they are included, I'll use the heat sinks anyway, but I'm glad to hear a fan will not be necessary.  

 

I'm starting to get the impression that people use different MicroSD cards in these things for different applications/configurations... sort of like how us TI'ers (pre FinalGROM  day's) used to swap cartridges.

 

I think you'll find that the TIPI will be mostly software configurable, and you'll probably run the same MicroSD card and simply download new and shiny things right into it. 



#193 Ksarul ONLINE  

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Posted Mon Oct 16, 2017 10:03 AM

Oooooohhh! What model teletype are you running there, @electriclab? I have a soft spot in my heart for those mechanical monsters, as I maintained many of them for about 20 years. . .



#194 --- Ω --- OFFLINE  

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Posted Mon Oct 16, 2017 10:11 AM

 

I think you'll find that the TIPI will be mostly software configurable, and you'll probably run the same MicroSD card and simply download new and shiny things right into it. 

 

Well that is interesting.  I personally have never played with one and really have no clue what to expect.

My hope is that the TI/TIPI configuration will be fast booting and somewhat invisible as an "install & forget it" type of thing.



#195 ElectricLab OFFLINE  

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Posted Mon Oct 16, 2017 11:25 AM

Oooooohhh! What model teletype are you running there, @electriclab? I have a soft spot in my heart for those mechanical monsters, as I maintained many of them for about 20 years. . .

 

Ksarul, I'm glad I'm not the only one with admiration of these old mechanical beasts :) I have couple of model 15s that were Associated Press machines that have no keyboard (I'm looking to get rid of them actually, I saved them from scrap years ago) A model 15 KSR that looks like a museum piece, and one each of models 28, 32, 33, 43. As I'm sure you know, The 15 and the 28 machines pre-date ASCII by a few years and use Baudot, and these are the ones I use a Pi to print on.

 

I think I got the bug when my Dad had an old teletype in his ham shack when I was little, and got on the air with it when RTTY was done with real iron. I just love mechanical things like this and marvel over how complex and ingenious they are. They're terrible things to collect though since they are so heavy and take up space, so I really haven't added to the collection for years. The only one people are interested in is the 33 since a lot of people got their first computer experience by using one. I have no nostalgia for mine, so one of these days I'll try to sell it. 



#196 ndp630 ONLINE  

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Posted Mon Oct 16, 2017 6:50 PM

Our goals are that heat sinks, and hdmi cables are not necessary.

But a sufficient power supply is necessary.

We plan to provide sdcard images almost all setup. TI facing software to set up the PI's networking will be provided. And then you will be able to perform any remaining maintenance with ssh from any PC/device on your network.

Eventually I intend for there to be telnet access from the TI to the PI.

-M@

 

I'm just now getting back into the TI scene and I'm thrilled at the TIPi project since I have been tinkering with Pi's for a couple of years. Will TiPi pass through to the PEB connection, or will it need to be last in the chain and need the standalone 32K for memory expansion?

 

Doug



#197 jedimatt42 OFFLINE  

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Posted Mon Oct 16, 2017 6:57 PM

UI am working on a PEB card version.

-M@

#198 ndp630 ONLINE  

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Posted Mon Oct 16, 2017 7:10 PM

I saw that you were working on a PEB version, but in the meantime, does the sidecar version have a passthrough?

 

Thanks.



#199 slinkeey ONLINE  

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Posted Mon Oct 16, 2017 8:28 PM

I saw that you were working on a PEB version, but in the meantime, does the sidecar version have a passthrough?

 

Thanks.

 

Looking at this photo makes me think, "Yes".

 

post-42954-0-75976800-1505110541_thumb.j



#200 jedimatt42 OFFLINE  

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Posted Mon Oct 16, 2017 11:03 PM

Final sideport boards will look very similar to that. I don't have a picture yet. But I have one built. They are slightly smaller than the above picture, so they are now the same dimensions as the 32k board. And the Raspberry PI 2x5 header is going to be a right-angle off the back.

As for what you hook up to the left and right, well that is your business. What is supported, will be less than what is possible. The Sideport TIPI has no power port. It expects to get it from the +5v pin on the 32k board's expansion header. The 32k board won't offer +5v on that pin, unless an external power supply is used (as designed).

---

Speaking of form factors... ElectricLab and I have grown to dislike the IDC ribbon cable depicted above. Firstly, it requires a standoff to connect to the Raspberry PI's GPIO headers. Secondly, I've made a dozen from parts with a proper crimping tool, and they don't work. So I'm trying cables with Dupont connectors instead.

But I've noticed the cables are going to need to connect to the PI from the top. Pretty cases that hide the GPIO port and offer some low profile, super pretty look are probably going to need refinement if they are going to fit at all.

-M@




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