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Member Since 12 May 2012
OFFLINE Last Active Apr 16 2019 1:51 PM

#4236295 Multi-cartridge for AVPS 1292 consoles

Posted by Rolo on Mon Mar 11, 2019 2:47 PM

Sorry, I did not see your posting.  ;-)

Multi-cart currently out of stock and currently is being re-furbished a little bit before next batch.

All extension-types are in stock.

You need both: Multi-cart (=memory) and special adapter for MPU 2000.

I'll do a new price calculation soon, but as always, I try to stay cheap. After all, it is a hobby project not a commercial thing, but of course, I have to pay for components and delivery, too.

Multi-cart (incl. eprom) something around maybe US$ 35 ... 40.

Extension something like US$ 15.

Shipping to your country? Just look at DHL's website and use their price calculator. Used to be cheap until 2019. Thus spoke the raven: never more...


Ordering: simply PM me on AA

Paying: Paypal or bank transfer


Best regards,



#4212356 Multi-cartridge for Dragon/CoCo 2 available

Posted by Rolo on Sun Feb 3, 2019 3:34 PM

project update:


Sorry, there is a little break. I can't work on the project at the moment. But it will go on for sure. I have a "mountain" of components waiting to be assembled and soldered on my desk at home. Just currently can't. Things hopefully will switch back to normal in a couple of weeks.


#4160206 How many Interton VC4000-type consoles in use?

Posted by Rolo on Sun Nov 18, 2018 6:54 PM

Hey, I just saw this. I'm probably not doing enough reading.


Concerning sales figures? Well, I'd guess the system is as good as dead (, at the moment). It really could use a couple of attractive homebrew games. Derek, great that you put time and effort into that console again.


I sold maybe 25 INTERTON-adapters and 15 or so 1292-AVPS-adapters. Not much going on. Maybe one order every six weeks. Just a few people, who still have some childhood memories, from all over the planet. The different 1292-families do not make it easier to cover demand. Everybody wants his special format to be covered, of course. I focussed on the two families, which I considered to be the biggest.

Yes sure, multi-cartridges are not what real collectors are fond of. They want original hardware, boxes and booklets. But multi-carts are great, to check out a system or to save storage space in the appartement.





Posted by Rolo on Thu Oct 25, 2018 10:01 AM

Not a complete new topic, but might still be helpful:




The information seems to be somewhat scattered around the place, so here again. I just made a SCART-cable for my new SCV.

This is how I made it. Maybe you need one, too.

Attached File  scart_pic01.jpg   302KB   7 downloads

Attached File  scart_pic02.jpg   150.71KB   7 downloadsAttached File  scart_pic03.jpg   195.32KB   7 downloads

It's working.


#4133956 Repairing an Arcadia 2001/HMG-2650 controller

Posted by Rolo on Mon Oct 15, 2018 9:52 AM


I have no idea what the jack plugs J1 and J2 are connected to or what role they play.

Well, obviously "they" prepared the console for paddle controllers and analog input devices, which they finally never needed.


According to the Signetics' 2637 datasheet the IC needs "external RC-networks" on its four analog input channels (pin 8/9 and pin10/11), which can't be read simultaneously by the way. The pairs have to be selected by a register flag of the chip. I did not find any application notes for the chip.

Looking at pin 8 the network is made of R20 (180K), R19 (10k) and C5 (100n), which makes a time constant of 190kOhms * 100nF = 19 ms (52 Hz).

Pin 9 the network consists of R17 (470k), R18 (10k) and C4 (47n) => 480kOhms * 47nF = 22.5 ms (44.3 Hz), which is the same, taking into account, which component values you can buy, and their tolerances (52/44 => 20 percent).

Same for the other controller port (pin10/11).


Plugging in the two paddles interrupts R8 and R20 (the two 180 kOhms-resistors) and replaces those by the paddle-pots.


Operating the controller joystick-switches, bypasses the four large resistors (2x180k and 2x470k) and is pulling the four analog inputs to nearly VCC via R9 (1K) or nearly GND via R21 (1K), with the 10k-resistors and the caps still in the circuit.


Hopefully this was not complete nonsense!


#4103776 Repairing an Arcadia 2001/HMG-2650 controller

Posted by Rolo on Sat Sep 1, 2018 5:58 PM

Repairing an Arcadia 2001 Controller


I had problems with a fire button of the left Arcadia 2001 controller, not firing anymore. :( The Arcadia-controllers are very simple and were cheaply made. Even working, they are not great controllers. In the end nothing will help, but making complete new controllers of quality components, with real switches. I might do that sometime, if there should be some games I really like and want to play decently. Not sure yet. But for the beginning a repair should be enough. Simultaneously I'm using the opportunity to preserve that technology by uploading a few pictures. 

That's my left controller: Attached File  ACR01.jpg   230.34KB   19 downloads


Inside everything is glued together. :|  By pulling carefully the parts can be separated. The mylar is quite corroded and a bit dirty:

Attached File  ACR02.jpg   238.11KB   17 downloads 


Showing the color scheme the plug: Attached File  ACR03.jpg   180.35KB   18 downloads


The wiring of the mylar itself, in case somebody wants to make a reproduction (or wonders, why pushing the "2"-key, also triggers the gun). Both red fire buttons are wired in parallel. They are just simple buttons, no rocker switches, no up and down. It is a 5x5 millimeters grid in the background.

Attached File  ArcadiaControllerMylar.jpeg   432.67KB   17 downloads


I cleaned the corrosion and without heavy rubbing, not only oxidation went off, but also the printed conducting traces. :-o They really are not bound firmly with the plastic carrier. Look at the red circle. I cleaned away part of button and wire, by using alcohol, an ear pad and too much pressure and rubbing. Cleaning must be done extremely careful: 

Attached File  ACR04.jpg   576.35KB   17 downloads


For the first time I tried to repair with conducting silver, since soldering is impossible. I made a mask of transparent tape for painting the new trace. I learnt, painting one time is not enough: To lower electric resistance, the trace must be thicker. I painted three times. Narrow traces are bad, too. They have to be wide. Contact with the original traces must overlap as far as possible to make good contact. Left picture: painting a few times.       Right picture: pulling off the tape.

Attached File  ACR05.jpg   275.31KB   17 downloadsAttached File  ACR06.jpg   513.06KB   17 downloads


I also re-painted the conductive pad of the fire-button later on. I took no photo.

Before reassembling I protected the new traces with transparent tape, since the silver color can't get inside the mylar's surface and gets scratched off quite easily. 

Reassembled the controller, checked it, working again!  :thumbsup:  ;) I can't predict, how long the new pad of the button will last, of course. Hopefully some time...






#4092921 Extension Cartridge for Emerson Arcadia 2001 family available

Posted by Rolo on Thu Aug 16, 2018 3:02 PM

project update:


Trying to make some progress. Only little spare time for retro. Burning eproms, building devices, testing, trying to process a few orders ... working ...  :rolling:

#4084038 Multi-cartridge for AVPS 1292 consoles

Posted by Rolo on Thu Aug 2, 2018 4:23 AM

Ohhh, :roll: , not a record?

But you are right. I saw the counter jump to something like 270 views, as soon as I posted the 2nd entry. And was wondering why!

#4083721 Multi-cartridge for AVPS 1292 consoles

Posted by Rolo on Wed Aug 1, 2018 2:48 PM

This really is funny, This post has been out for seven months and it collected 0 views and 0 responses!

This simply must be a record :!:

​It certainly is the most boring and irrelevant topic, that ever made it to the AtariAge-Forum!

:dunce: Yeah, I did it!  :dunce:

Try to beat it, if you can...  :lolblue:

And nonetheless, I sold a couple of those adapters.


Probably, many people simply do not know "AVPS" or "1292", but simply Radofin or  Acetronic.  :???:


#4082728 Extension Cartridge for Emerson Arcadia 2001 family available

Posted by Rolo on Tue Jul 31, 2018 3:28 AM

Extension Cartridge for Emerson Arcadia 2001 family available


Just a link, if you are looking for a multi-cartridge for Emerson Arcadia 2001: http://atariage.com/...-3#entry4082727

#4082727 Multi-cartridge for Dragon/CoCo 2 available

Posted by Rolo on Tue Jul 31, 2018 3:17 AM

Extension Cartridge for Emerson Arcadia 2001 family available

I made a new extension cartridge connecting the Dragon Multi-Cart to an Emerson Arcadia 2001-console. Wikipedia shows a huge variety of clones: https://en.wikipedia...ki/Arcadia_2001. I'm having a HANIMEX HMG-2650, which is identical to the Emerson Arcadia 2001.


Attached File  ArcadiaExt.jpg   30.46KB   2 downloads Attached File  ArcadiaExtAndMC.jpg   25.2KB   2 downloads
There are five software compatible sub-families, with unfortunately different cartridge slots. Please consider this. Currently I'm not having any plans to also build extension cartridges for the other sub-types.
I loaded an eprom with 64 games for testing, all of them are running flawlessly, as far as I noticed. :)


Attached File  Hanimex.jpg   17.4KB   2 downloads Attached File  Breakaway.jpg   36.48KB   2 downloads Attached File  3DAttack.jpg   60.95KB   2 downloads

All cartridges available in limited numbers. Please allow some time to manufacture and ship the products. It's a strictly manual (hobby-) process.
Price US$13.99 plus shipping! Please use PM.


#4057523 Multi-cartridge for Dragon/CoCo 2 available

Posted by Rolo on Tue Jun 26, 2018 12:30 PM



Where is this item at and what is the price? Will the games come pre install? If so can I delete the and install what I need? I will be getting a CocoVGA and Coco SDC as soon as I can.


If you are buying a CoCo SDC you don't need the Dragon/CoCo Multicart. One cartridge is enough.

Dragon/CoCo Multicart: 30 US$ plus shipping
Where? PM on AtariAge

You can burn the eprom in any way you like, as long as you got a burner. Of course I'd assist in that process.



#4016454 New: VECTREX Joystick Kit for sale

Posted by Rolo on Fri Apr 27, 2018 2:01 PM

project update:


Today I shipped my final VECTREX Joystick Kit:thumbsup:

So, I'm hibernating this project for probably, well, for good.  :sleep:  :sleep:  :sleep:

Almost all components are gone, except some buttons, cables, levers.


Thank you all kit-builders for the support.

Have fun and maybe for all the people, who still did not put the thing together, a little reminder:  :waving:Today is a good day to start making your own personal Vectrex joystick.

Best regards,



#3944576 New: VECTREX Joystick Kit for sale

Posted by Rolo on Thu Jan 25, 2018 3:02 PM

Will you consider releasing a schematic after the final run is sold out?

Well, the circuitry is quite straight forward, but it's just a part of the task. So, I'm not sure, if those schematics really would help somebody.


Equally important:

  • identifying suitable components,
  • ordering things from various stores,
  • designing pcbs according to the parts,
  • designing the mechanical outline
  • getting/making cables
  • getting fitting sticks (most thumbtacks simply fall of the controller, that's why I designed one of my own)
  • fix all the errors

Assuming some major demand, I could consider to provide real DIY-kits for the experts: Unsoldered, just parts and pcbs. That would speed up things considerably and would still be an easy and quick way to make an individual controller, without to much detail work.


#3941765 New: VECTREX Joystick Kit for sale

Posted by Rolo on Mon Jan 22, 2018 7:57 AM

project update:


I finished my waiting list! I contacted all people on my list and shipped all items, as ordered. Only a few spare kits are left.

This means, this project is coming to an end now.

Thanks to all supporters!  :thumbsup: