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RCA Studio II Multicart

RCA Studio

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#1 flip OFFLINE  

flip

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Posted Sat Sep 10, 2016 2:02 AM

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

Attached Thumbnails

  • pong.jpg
  • asteroids.jpg
  • multicart_front.jpg
  • multicart_back.jpg

Attached Files



#2 flip OFFLINE  

flip

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Posted Sat Sep 10, 2016 2:05 AM

Order list - © = complementary

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


#3 mckafka99 OFFLINE  

mckafka99

    Stargunner

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Posted Sat Sep 10, 2016 5:58 AM

I'm definitely interested in one! :-) Composite out and shell if available as well.

#4 toymailman OFFLINE  

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Posted Sat Sep 10, 2016 6:20 AM

 

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.



#5 Blazing Lazers OFFLINE  

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Posted Sat Sep 10, 2016 6:55 AM

Of course I'm in for this!!! :)

I'd like one with a shell, and the extra board for composite out too :)

Edited by Blazing Lazers, Sat Sep 10, 2016 6:59 AM.


#6 flip OFFLINE  

flip

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Posted Sat Sep 10, 2016 7:10 AM

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



#7 krslam OFFLINE  

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Posted Sat Sep 10, 2016 7:34 AM

I'm in for 1 with shell and composite out!



#8 rhcocker OFFLINE  

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Posted Sat Sep 10, 2016 8:35 AM

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?



#9 lazzeri OFFLINE  

lazzeri

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Posted Sat Sep 10, 2016 8:36 AM

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, Sat Sep 10, 2016 8:36 AM.


#10 ianoid OFFLINE  

ianoid

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Posted Sat Sep 10, 2016 8:47 AM

I'd like a multicart with shell and a composite out board!

Thanks!

#11 eebuckeye OFFLINE  

eebuckeye

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Posted Sat Sep 10, 2016 9:00 AM

I want one with shell and composite please!



#12 KylJoy OFFLINE  

KylJoy

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Posted Sat Sep 10, 2016 9:27 AM

I would like one with shell and composite out, please.

#13 flip OFFLINE  

flip

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Posted Sat Sep 10, 2016 12:47 PM

Hi again,

 

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

 

FliP



#14 lazzeri OFFLINE  

lazzeri

    Moonsweeper

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Posted Sat Sep 10, 2016 8:05 PM

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!

#15 BassGuitari OFFLINE  

BassGuitari

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Posted Sat Sep 10, 2016 9:57 PM

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

Are there labels for the carts, by any chance?



#16 spaceman OFFLINE  

spaceman

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Posted Sun Sep 11, 2016 1:01 AM

I definitely want one with shell if possible please.



#17 phreak97 OFFLINE  

phreak97

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Posted Sun Sep 11, 2016 2:13 AM

Very nice work!
What is that lcd module youre using to test with?

#18 flip OFFLINE  

flip

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Posted Sun Sep 11, 2016 2:20 AM

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...



#19 rayik ONLINE  

rayik

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Posted Sun Sep 11, 2016 6:28 AM

I'm interested in multicart (with shell) and composite out board. Thank you.

#20 rayik ONLINE  

rayik

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Posted Mon Sep 12, 2016 6:43 AM

Thank you for putting me on the list. Could you please add that I'd like a shell. Thank you

#21 swlovinist OFFLINE  

swlovinist

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Posted Mon Sep 12, 2016 6:49 AM

Sign me up for one, with PCB and shell also.   



#22 BassGuitari OFFLINE  

BassGuitari

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Posted Mon Sep 12, 2016 7:56 AM

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

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



#23 flip OFFLINE  

flip

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Posted Tue Sep 13, 2016 1:56 PM

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



#24 carlsson OFFLINE  

carlsson

    Metagalactic Mule

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Posted Tue Sep 13, 2016 4:19 PM

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.



#25 lazzeri OFFLINE  

lazzeri

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Posted Tue Sep 13, 2016 4:49 PM

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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