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RCA Studio II Multicart

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Hi everyone,

It has taken longer than expected, but I am happy to announce I have a final version of an RCA Studio II Multicart. The newer system board versions were crippling a signal on the cartridge port, which meant that larger games (using $c00 and higher) would not work. Thanks to Ed Keefe (also active here), the cart now fixes this signal, meaning that no modification is needed to the console itself!

Using 2 hex encoders, 128 slots are available on an EEPROM - this is plenty for the existing games, both official ones and homebrew. The cartridge is compatible with clones, such as the Victory MPT-02 (though not with the Toshiba Visicom, as the slot/pinout is different). Should new games come out, or found, they can be added by flashing the EEPROM. Some photos are attached showing the cart playing Pong and Asteroids (both games by Paul Robson).

It's been designed to fit the original cartridge shells. Two holes are needed in the front for the rotary selection switches (and some internal tabs need to go as well). I have some spare shells of broken carts, courtesy of toymailman. I probably won't have time to modify them for the carts, but I'll add the shells on a first-come basis (i.e. until they run out).

The design is open source - see the schematics and the board file attached. You're welcome to build your own of course, but these are not intended to be used in a commercial product. If you'd rather have a ready-made one, I am happy to ship one anywhere in the world for US$40. Leave your username, whether you need a shell (on first come basis only - you'll have to modify it yourself to fit the cart). For those interested, I can add a small PCB that gives you composite out at no extra cost (but you need some soldering skills to add it to the console of course). Put that in your post as well...

I'll keep a list below this post with orders, to keep track of things. When your cart is ready to ship, I'll send you a PM with further details.

Any questions, feel free to ask!

 

FliP

post-41391-0-10355400-1473493635_thumb.jpg

rca_studio_II_mutli_v3.3.pdf

RCA_Studio_II_multicart_eagle.zip

post-41391-0-66713800-1473494088_thumb.jpg

post-41391-0-19273300-1473494263_thumb.jpg

post-41391-0-01236200-1473494271_thumb.jpg

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Order list - © = complementary

toymailman     1 (C)
eKeefe         1 (C)
paulrobson     1 (C)
Mpt02          1 (C)

Thank you very much! :-D

 

This is great news that it works with the newer Rev E boards now too. Excellent work.

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Darn - it seems I can't edit the 2nd post to update the orders... I'll try to come up with another system to track what going on (probably Google Sheets) and post that here...

 

FliP

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I don't currently own an RCA Studio II, but I'd like to have one of these in case I get a hold of this console. Please put me down for one multi-cart with shell and composite out. Thanks.

 

Does anyone have an RCA Studio II for sale by chance?

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Order list - © = complementary

toymailman     1 (C)
eKeefe         1 (C)
paulrobson     1 (C)
Mpt02          1 (C)
I want one. With shell, please.

 

Interested in composite too.

 

Thank you!

Edited by lazzeri

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Hi again,

 

You can track orders here (should open a Google Sheet)

 

FliP

I would like Composite board too if that's OK.

 

Thank you again!

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Very nice work!

What is that lcd module youre using to test with?

 

It's an Adafruit NTSC/PAL TFT panel - a bit small (1,5") but they have bigger ones: https://www.adafruit.com/category/110

 

The idea was to make a 'portable' Studio II :-D , but in the meantime, I've found this on e-bay... That would only require a little stereo socket on the console that could double as video out...

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I am interested in a multicart only, please! :)

Actually, on second thought, could I get a shell as well? Thanks!

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Quick update: thirteen carts built, waiting for their EEPROMs. Still waiting for the composite boards...

IMG 0837

Only one cartridge shell left, so if you want one, better be quick...

 

flip

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I'd want a multicart + composite board (unless it is dead easy to mod a Conic M1200 - feel free to point me to a page in that case). I think I can live without a shell, or reuse my spare Blackjack cartridge.

 

Hm.. so we're filling in our details on the Google sheet? I'll look it up right away.

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Quick update: thirteen carts built, waiting for their EEPROMs. Still waiting for the composite boards...

 

 

Only one cartridge shell left, so if you want one, better be quick...

 

flip

Great news! Thanks!

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