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8k games into a 4k CHIPS???? How is it possible??? (ATARI 2600)

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2 hours ago, Pilot99 said:

I start the tests with the 4 in 1 "27C256_Phoenix_Hero_Kangaroo_Ms pac man" and only Hero don't worked, so I separeted the 4 games and replaced "Hero" with other "Hero" from the 4x1 dump of the thread above, so the 4 games work.

So the roms I sent you haves the same bankswitch scheme as that weird cart?
Then The other ones I sent you might work too.. All of them works in the same board I tested here, so I think if one of them works all other must work too.

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13 hours ago, Pilot99 said:

I start the tests with the 4 in 1 "27C256_Phoenix_Hero_Kangaroo_Ms pac man" and only Hero don't worked, so I separeted the 4 games and replaced "Hero" with other "Hero" from the 4x1 dump of the thread above, so the 4 games work.

Good Morning
What PCB did you use for these games would you give me?

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8 hours ago, Robson Zandoná said:

Good Morning
What PCB did you use for these games would you give me?

I used the pcb below...
The friend alex_79 member here in the forum, traced the schematics.
I converted this circuit to use a 27C512 adding two more switches and now it is able to run eight 8K games. But the bankswitching is the same.. It was not changed..

WhatsApp Image 2020-09-04 at 23.16.39 (3).jpegWhatsApp Image 2020-09-04 at 23.16.39 (1).jpegboard.jpgschem.png

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6 hours ago, pcrock said:

I used the pcb below...
The friend alex_79 member here in the forum, traced the schematics.
I converted this circuit to use a 27C512 adding two more switches and now it is able to run eight 8K games. But the bankswitching is the same.. It was not changed..

WhatsApp Image 2020-09-04 at 23.16.39 (3).jpegWhatsApp Image 2020-09-04 at 23.16.39 (1).jpegboard.jpgschem.png

Are you Brazilian @pcrock, if you can help me because I don't understand electrical projects and schemes?
I am too
 
 
Edited by Robson Zandoná

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On 9/19/2020 at 1:11 AM, Robson Zandoná said:
Are you Brazilian @pcrock, if you can help me because I don't understand electrical projects and schemes?
I am too
 
 

Please. Send me a private message

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On 9/16/2020 at 6:40 PM, Pilot99 said:

 

Hello my friend, I need games with the same bankswitch of this cartridge, have you done a dump? know where I can find 8k games with the same bankswitch?

Sorry for the delay. Covid-19 time it is been a hard days and hard night here.
I dumped my two carts today an sent zip files here.

Please note that this is a weird strange cart.

It uses a kind of special 16K chip that fits a 32K data content.
So I did two types of reading. Firstly I did a read as a 27128 chip and after I did a read as 27256 chip. Please Keep in mind that the actual chip is a NMC27CP128Q. I sent attached all the data I got. I placed some pics from the board too.
Hope be useful for you.
Once more sorry for the delay on dumping the files...
 

WhatsApp Image 2020-12-07 at 21.19.39 (1).jpeg

WhatsApp Image 2020-12-07 at 21.19.39 (2).jpeg

WhatsApp Image 2020-12-07 at 21.19.39 (3).jpeg

WhatsApp Image 2020-12-07 at 21.19.39 (4).jpeg

WhatsApp Image 2020-12-07 at 21.19.39.jpeg

READ AS 27C128.zipx READ AS 27C256.zipx

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THE GAMES INSIDE THE ROMS I PLACED ABOVE IS:

E.T

Press Cooker
Robot Tank
Pigs in Space   (ALL BY RENTACON)

H.E.R.O. (By Rentacon)
Pole Position (By Rentacon)
Moon Patrol (By Rentacon)
Beam Raider (By JVP)

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