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JonnyBritish

Games that require the Atari GTIA chip

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I wouldn't say it's absolutely vital for that game. GTIA modes are only really used when you're docked or launching down to the planet.

 

But Koronis Rift is an example of it being a vital requirement.

 

If you do happen to have a CTIA system, it would probably be regarded as rare/semi valuable, so you'd be better off keeping it stock and getting another machine to play on.

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I wouldn't say it's absolutely vital for that game. GTIA modes are only really used when you're docked or launching down to the planet.

 

But Koronis Rift is an example of it being a vital requirement.

 

If you do happen to have a CTIA system, it would probably be regarded as rare/semi valuable, so you'd be better off keeping it stock and getting another machine to play on.

 

The game Rainbow Walker ... was that a GTIA game?

 

i also know the titlescreen to Ballblazer was done in GRAPHICS 9.

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Rainbow Walker - highly doubtful.

 

I think all the Lucasfilm games used GTIA intro screens, but they're not vital for the game. Koronis Rift should be the only of their games where GTIA is absolutely vital.

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I read somewhere that Rescue on Fractalus requires that the Atari has a GTIA chip. Wondering what other games specifically require graphics modes that only exist on the GTIA chip?

 

Elektraglide is one... If memory serves, the 'dashboard' was done with a GTIA mode.

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there was a game with the red lobster where the ingame gfx was done in mode9.... if I remember publisher was Red Rat?

 

Space Lobsters ;)

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And, well, "Galactic Raid" .... the first Basic game with "gr. 9" support and a full digitized title theme :ponder:

 

I still hope to find the disk eventually.

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I wouldn't say it's absolutely vital for that game. GTIA modes are only really used when you're docked or launching down to the planet.

 

But Koronis Rift is an example of it being a vital requirement.

 

If you do happen to have a CTIA system, it would probably be regarded as rare/semi valuable, so you'd be better off keeping it stock and getting another machine to play on.

Hmm, Maybe I should put the CTIA and OS A back in my 1980 800.

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Forget OS-A... just keep it seperate for "historical collector" reasons.

 

We were talking about CTIA so-called bugs and differences beyond the obvious some time back.

 

There were 2 issues that we couldn't resolve:

1. Supposedly PM graphics aren't aligned properly, there was report that CTIA offset them by 1 hires pixel.

2. The actual horizontal position of the entire screen is different to GTIA systems (slightly shifted left or right).

 

If you could test those theories out (capture card would probably help heaps), you could solve those problems.

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:|

Forget OS-A... just keep it seperate for "historical collector" reasons.

 

We were talking about CTIA so-called bugs and differences beyond the obvious some time back.

 

There were 2 issues that we couldn't resolve:

1. Supposedly PM graphics aren't aligned properly, there was report that CTIA offset them by 1 hires pixel.

2. The actual horizontal position of the entire screen is different to GTIA systems (slightly shifted left or right).

 

If you could test those theories out (capture card would probably help heaps), you could solve those problems.

Unfortunately the only capture device I have is an old TV card and it does nasty things to A8 output.

 

Now I actually have to find the CTIA. It's around here someplace...

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A big screen TV should be sufficient. Maybe put a bit of masking tape to indicate the screen starting H-Pos, and compare the 2 chips.

 

The PMG theory... another easy one. Just a few POKEs from Basic, then see if it is offset from it's proper position.

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Rainbow Walker - highly doubtful.

 

I think all the Lucasfilm games used GTIA intro screens, but they're not vital for the game. Koronis Rift should be the only of their games where GTIA is absolutely vital.

Rainbow walker is a plain simple Antic E plus DLIs.

 

Greetings,

Thomas

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Star Raiders II looks like it uses GTIA mode 10 for the planet surface, when you're in orbit.

 

It does.

 

And another -not so good- approach is the GR.11 usage in Murder on the Cinderneuf.

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