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Video driver thoughts

All information relating to the Alpha plus all the WIP threads etc.
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PhilC
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Re: Video driver thoughts

Post by PhilC »

Ok will get cracking now.
If it ain't broke, test it to Destruction.
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Icky
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Re: Video driver thoughts

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Forgottenmyname wrote: Tue Nov 27, 2018 8:16 pm Is there any benefit from me duplicating the results at the mo? Or should I wait on assembling it?
Maybe?

My only thought is incase I have done something wrong or one of my components is not behaving. Although if that was the case I think it would not be working at all.
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Icky
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Re: Video driver thoughts

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And for what its worth. Here is a video of Magic Pockets loading and running using the Video DAC board

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Re: Video driver thoughts

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Forgottenmyname wrote: Tue Nov 27, 2018 8:18 pm Ok will get cracking now.
Good luck and happy soldering.

I'm going to now retire from the Atari workshop with a G&T to pour over the schematics, pinouts and data sheets.
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exxos
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Re: Video driver thoughts

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Icky wrote: Tue Nov 27, 2018 8:22 pm And for what its worth. Here is a video of Magic Pockets loading and running using the Video DAC board
I don't even see like all the interference type stuff either... I don't get it :(
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Re: Video driver thoughts

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This is how the Falcon is wired up...
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Icky
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Re: Video driver thoughts

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exxos wrote: Tue Nov 27, 2018 8:27 pm
Icky wrote: Tue Nov 27, 2018 8:22 pm And for what its worth. Here is a video of Magic Pockets loading and running using the Video DAC board
I don't even see like all the interference type stuff either... I don't get it :(
Yes its odd. Its bit like Smonson's HDMI/DVI adaptor. Magic Pockets works fine but desktop keeps rebooting.
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exxos
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Re: Video driver thoughts

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Icky wrote: Tue Nov 27, 2018 8:30 pm Yes its odd. Its bit like Smonson's HDMI/DVI adaptor. Magic Pockets works fine but desktop keeps rebooting.
Yeah thats odd as well..

There is the thought I guess that the 32Mz clock might need inverting.. but that would be assuming data was latched as it was changing.. which might explain the desktop, but not why the game works.

Its odd when you first power up, only white at the top where the text it...
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PhilC
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Re: Video driver thoughts

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Slowly getting there, forgot i had the oscunf*ck board in the way, so adding a few more sockets etc
If it ain't broke, test it to Destruction.
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Re: Video driver thoughts

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First item between Falcon and board schematic

Falcon has pull up R503 on pins 15 & 26. Board schematic goes straight to Vcc

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