Atari 2600 games that do not work on the latest core

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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Sun Dec 16, 2018 5:43 pm

Neuro wrote:I was thinkong searching it in the load rom module.
If i found somenthing i will post it here.

The ROM loader on the ARM side is a generic one, used from ZX81 to Genesis. Also there isn't a large buffer space on the MCU for storing the whole ROM and search in it. I don't say the searching cannot be implemented in the FPGA (the A2600 core is a small one, there are plenty of space), but I don't have any motivation to do it. A good exercise for who want to learn some HDL coding.

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Re: Atari 2600 games that do not work on the latest core

Postby DanyPPC » Tue Dec 25, 2018 12:52 pm

Is there hope to play Scramble with this fantastic core ? :)

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Re: Atari 2600 games that do not work on the latest core

Postby vebxenon » Wed Dec 26, 2018 12:36 am

DanyPPC wrote:Is there hope to play Scramble with this fantastic core ? :)


Or Mappy :cheers:
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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Wed Dec 26, 2018 3:08 pm

Scramble uses a custom chip (called DPC) in the cart, like Pitfall II. Unless someone implements it, these games won't work.

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Re: Atari 2600 games that do not work on the latest core

Postby DanyPPC » Wed Dec 26, 2018 4:43 pm

Ah, ok. I didn't know about it. Thanks.

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Re: Atari 2600 games that do not work on the latest core

Postby Neuro » Thu Dec 27, 2018 1:44 pm

slingshot wrote:Scramble uses a custom chip (called DPC) in the cart, like Pitfall II. Unless someone implements it, these games won't work.


Victor Trucco, has an implementatiom od the dpc for the atari 2600 core.
You can see it here:
https://gitlab.com/victor.trucco/Multic ... oFlash.vhd

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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Fri Jan 11, 2019 10:09 pm

New release:
https://github.com/mist-devel/mist-bina ... 190111.rbf

- Fixed the FE mapper (Decathlon, Robot Tank)
- Some TIA fixes (Frostbite, Combat, Out of Control)
- Fixed the keyboard handler (for F9 and F10)
- Added Victor Trucco's DPC chip implementation for Pitfall II Lost Caverns. Need a .p2 extension to activate it.

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Re: Atari 2600 games that do not work on the latest core

Postby vebxenon » Sat Jan 12, 2019 8:42 am

slingshot wrote:New release:
https://github.com/mist-devel/mist-bina ... 190111.rbf

- Fixed the FE mapper (Decathlon, Robot Tank)
- Some TIA fixes (Frostbite, Combat, Out of Control)
- Fixed the keyboard handler (for F9 and F10)
- Added Victor Trucco's DPC chip implementation for Pitfall II Lost Caverns. Need a .p2 extension to activate it.


Wow. Thanks!! :cheers: Hope soon new titles like Mappy and Scramble will work also.

How about some Parker Brothers titles like Star Wars: The Arcade Game and Supercharger games in .bin format? :D
Just a computer and videogame lover :)

- Atari Jr 2600 clone
- Atari 7800 Peritel
- Atari XEGS
- Atari Lynx II
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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Sat Jan 12, 2019 12:45 pm

vebxenon wrote:
How about some Parker Brothers titles like Star Wars: The Arcade Game and Supercharger games in .bin format? :D


Parker Bros games are usually use the E0 mapper which is implemented (just rename the file to xxx.E0). You can check in the Stella emu cartridge info if not sure.

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Re: Atari 2600 games that do not work on the latest core

Postby vebxenon » Sat Jan 12, 2019 2:31 pm

slingshot wrote:
vebxenon wrote:
How about some Parker Brothers titles like Star Wars: The Arcade Game and Supercharger games in .bin format? :D


Parker Bros games are usually use the E0 mapper which is implemented (just rename the file to xxx.E0). You can check in the Stella emu cartridge info if not sure.


Ok :-) , thanks for the info. Also Frogger now is more playable. Screen isn't now always shaking.

Thanks again! :D
Just a computer and videogame lover :)

- Atari Jr 2600 clone
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- Atari XEGS
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Re: Atari 2600 games that do not work on the latest core

Postby vebxenon » Mon Jan 14, 2019 12:51 pm

Hi :D What are the new features on a2600_190113.rbf?

Thanks! :D :cheers:
Just a computer and videogame lover :)

- Atari Jr 2600 clone
- Atari 7800 Peritel
- Atari XEGS
- Atari Lynx II
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- MiST Board

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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Mon Jan 14, 2019 3:59 pm

Just some fix to the previous fixes :)
+ a joystick swap option.

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Re: Atari 2600 games that do not work on the latest core

Postby DanyPPC » Wed Jan 16, 2019 8:44 am

I have out-of-sync on most games through the YPbPr Cable, as the previous SMS core, then fixed.

Is it possible to fix this problem on A2600 core too ?

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Re: Atari 2600 games that do not work on the latest core

Postby slingshot » Wed Jan 16, 2019 8:55 am

On SMS, the blanking and vertical sync generated by the core, that can be fixed, on A2600, it's up to the game when these events are happening, not much I can fix in the core.

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Re: Atari 2600 games that do not work on the latest core

Postby DanyPPC » Wed Jan 16, 2019 9:29 am

Ok, I understand. Thanks for the explanation.


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