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My experiments with Atari 7800


Eagle

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  • 4 weeks later...
On 1/31/2021 at 6:25 PM, Eagle said:

I never seen before on A7800 

Real dual layer Parallax full screen 160x192 in 160B mode (13 colours)

Glitching little bit one font, will have to redraw the background layer.

Also I will put some colours change on DLI and maybe few different speeds for the background layer. 

I hope you will enjoy.

 

https://raz0red.github.io/js7800/?cart=https://atariage.com/forums/applications/core/interface/file/attachment.php?id=807395

 

Parallax.a78 32.13 kB · 456 downloads

Could real games be made that look like that?

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  • 2 weeks later...
  • 3 weeks later...

Not yet.

Only what I can say it's base on Mister (like 7800GD) and have some extra features:

- 8 Amiga style sound channels

- extra background layer 320x200 (256 colours) with independent scrolling

- 32MB ram

- DL can have 3 times more sprites than 7800 per line

 

But long story short, A7800 devs could easily make game running on A8 (almost matter of changing equates and orgs).

BOM will be around $30.

Edited by Eagle
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16 minutes ago, Eagle said:

But long story short, A7800 devs could easily make game running on A8 (almost matter of changing equates and orgs).

But only XL/XE (excluding the 1200XL and 800). Too bad - my primary machines are all boxes without PBI or ECI connectors. 

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22 hours ago, Eagle said:

Not yet.

Only what I can say it's base on Mister (like 7800GD) and have some extra features:

- 8 Amiga style sound channels

- extra background layer 320x200 (256 colours) with independent scrolling

- 32MB ram

- DL can have 3 times more sprites than 7800 per line

 

But long story short, A7800 devs could easily make game running on A8 (almost matter of changing equates and orgs).

BOM will be around $30.

where can I buy it?

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21 hours ago, Eagle said:

For now only prototypes for devs.

I have to ask... while the device is very cool on it's own and needs no other justification, I can' help but think that it makes it convenient for A8 folks to dip their toes into 7800 development and/or perform cross-development work. Was that intentional?

 

Either way, cool beans! :thumbsup:

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