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      /  RTG related questions
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pavlor 
RTG related questions
Posted on 26-Nov-2016 11:10:28
#1 ]
Elite Member
Joined: 10-Jul-2005
Posts: 9583
From: Unknown

During my work on ReTargetable Graphics Wikipedia article, I read several reviews of older RTG hardware/software. However, in case of Retina my sources are confusing: one say Retina GFX drivers are able to display Workbench in 24 bit, other say only some windows on WB, another speaks about buggy implementation of this mode. As WinUAE doesn´t support Retina cards yet, I´m not able to test this myself.

Are there any Retina GFX card users with experence/knowledge about original Retina driver software, who could clarify this? Thanks for help.

Edit: Changing thread title (was: Retina GFX cards driver software), as I have questions about other cards/drivers too...

Last edited by pavlor on 29-Nov-2016 at 06:00 PM.
Last edited by pavlor on 29-Nov-2016 at 06:00 PM.

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pavlor 
Re: Retina GFX cards driver software
Posted on 28-Nov-2016 15:58:51
#2 ]
Elite Member
Joined: 10-Jul-2005
Posts: 9583
From: Unknown

Retina seems to be rare card...

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PhantomInterrogative 
Re: Retina GFX cards driver software
Posted on 28-Nov-2016 19:38:20
#3 ]
Cult Member
Joined: 10-Sep-2004
Posts: 809
From: The Interrogative Lair

@pavlor

At one time, I owned a Retina Z3, which had a pass through for ECS/AGA screens. It would display workbench either through the pass through, or under 24 bit color and resolutions. My memory is fuzzy right now. I do not know if 24 bit workbench was through MacroSystem's custom drivers, or through Picasso96.

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Murasame 
Re: Retina GFX cards driver software
Posted on 29-Nov-2016 9:19:24
#4 ]
Member
Joined: 1-Jun-2004
Posts: 40
From: Italy, Reggio Emilia

@pavlor

To display a graphic buffer in 16 or 24 bit is only a matter of how much memory has equipped the graphic card.

According to this article in the big book of amiga hardware, there were two versions of the card: 1Mb and 4 Mb.

So if I haven't done the wrong math, to display a 24 bit image in, for example, 1024*768 resolution you need:

(1024 * 768 * 24) / 8 / 1024 = 2304 Kb -> way too much for the 1Mb version

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pavlor 
Re: Retina GFX cards driver software
Posted on 29-Nov-2016 15:27:20
#5 ]
Elite Member
Joined: 10-Jul-2005
Posts: 9583
From: Unknown

@Murasame

Well, I know specs of these cards, my question was about their original driver software...

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pavlor 
Re: RTG related questions
Posted on 29-Nov-2016 18:03:04
#6 ]
Elite Member
Joined: 10-Jul-2005
Posts: 9583
From: Unknown

New question:

According to French AmigaNews magazine (No 97, January 1997, p. 5), Picasso96 should be evolution of the original driver software for the Graffity card. True?

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NutsAboutAmiga 
Re: Retina GFX cards driver software
Posted on 29-Nov-2016 18:59:07
#7 ]
Elite Member
Joined: 9-Jun-2004
Posts: 12817
From: Norway

@Murasame

Yes but more common at the time was VGA resolution 640x480.
640*480*3(byte)=900Kb

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