(AGA) what's this?

BullyDog · 09 July 2018, 01:42

I see this "(AGA)" at the end of the game names. What is it?

Thanks

Seiya · 09 July 2018, 01:44

It's a game that support AGA Chipset on A1200 and A4000 Amiga model

Amiga4000 · 09 July 2018, 01:54

In spite of it's limitations, when implemented to it's fullest, I love AGA games.

Explanation Link............
https://en.wikipedia.org/wiki/Amiga_...s_Architecture

Foebane · 09 July 2018, 01:58

Quote:

Originally Posted by BullyDog

I see this "(AGA)" at the end of the game names. What is it?

Thanks

AGA stands for Advanced Graphics Architecture, and it was a major upgrade to the graphics custom chips of the Amiga, making them the Amiga equivalent of the PC's VGA, and in some ways, beyond.

However, the sound chip was not improved in any way.

BullyDog · 09 July 2018, 02:00

I see, so these Amigas are the ones with the VGA ports?

As to the sound chip. still the SID?

Mrz · 09 July 2018, 02:37

Quote:

Originally Posted by BullyDog

I see, so these Amigas are the ones with the VGA ports?

nope the Amiga 1200 and the A4000 don't have vga ports

Quote:

Originally Posted by BullyDog

As to the sound chip. still the SID?

nope
the SID chip is used in the commodore 64
the commodore Amigas use the "paula" sound chip

BullyDog · 09 July 2018, 03:27

Ok, I got it. They use RGB ports and you can use a VGA adapter on it.

Amiga4000 · 09 July 2018, 04:18

Quote:

Originally Posted by BullyDog

Ok, I got it. They use RGB ports and you can use a VGA adapter on it.

You can do that but you'll get a 15KHz video output which would require using a 15KHz horizontal freq capable LCD monitor (or a 15KHz CRT without adapter).

To use a modern 31KHz LCD monitor you need a scan doubler (15KHz ---> 31KHz) such as this (IMO, the best option).

https://icomp.de/shop-icomp/en/shop/...A1200%2FA4000T

chip · 09 July 2018, 04:54

More simply, when you see AGA in games names you must select "A1200" in WinUAE

Amiga4000 · 09 July 2018, 05:11

Quote:

Originally Posted by chip

More simply, when you see AGA in games names you must select "A1200" in WinUAE

Or that if you're using emulation!

chip · 09 July 2018, 05:16

Yep you are right Amiga4000

I thinked BullyDog uses WinUAE but i can't know that

Hewitson · 09 July 2018, 08:09

Quote:

Originally Posted by Foebane

AGA stands for Advanced Graphics Architecture, and it was a major upgrade to the graphics custom chips of the Amiga, making them the Amiga equivalent of the PC's VGA, and in some ways, beyond.

Beyond? Don't know that I'd agree with that.

Foebane · 09 July 2018, 10:18

Quote:

Originally Posted by Hewitson

Beyond? Don't know that I'd agree with that.

HAM8 is beyond that Hi-Color crap that SVGA puts out, that's for sure.

Hewitson · 09 July 2018, 10:31

HAM8 is not really useful for anything other than static images. You can do anything in 24-bit SVGA, and it's so much faster it's not funny. No comparison.

Foebane · 09 July 2018, 11:25

Quote:

Originally Posted by Hewitson

HAM8 is not really useful for anything other than static images.

Dozens of scene demos that use HAM8 for animation say otherwise. I can cite examples, if you like. OK, so the resolution is lower than Hi-Color and you need a 68030 at least, but they're still FMV animations and effects.

frank_b · 09 July 2018, 12:02

Quote:

Originally Posted by Foebane

HAM8 is beyond that Hi-Color crap that SVGA puts out, that's for sure.

If you mean in comparison to a 16 bpp display I'd have to disagree.
Ham8 is far inferior compared to the flexibility of a high colour or true colour display.

coder76 · 09 July 2018, 12:48

Quote:

Originally Posted by Hewitson

Beyond? Don't know that I'd agree with that.

The VGA standard was made for the ISA bus, which was a standard back then on the PC's. However, the ISA bus has a too limited bandwidth to support more than 16 colors in 640x480. This is where AGA is better, as it has 640x480 resolution also with 32-256 colors, but also many other screenmodes that the VGA standard does not offer, like 1280 pixel superhires modes.

Hewitson · 09 July 2018, 12:53

I'm sure I used to run Windows 3.1 at 640x480 in 256 colours with an ISA VGA card.

However we are discussing SVGA here. Many SVGA cards were PCI.

coder76 · 09 July 2018, 13:05

Quote:

Originally Posted by Hewitson

I'm sure I used to run Windows 3.1 at 640x480 in 256 colours with an ISA VGA card.

However we are discussing SVGA here. Many SVGA cards were PCI.

It's not possible to run 640x480 with 256 colors and 60 Hz on a standard ISA bus. There were some special screenmodes available that could run with lower refresh rates and lower resolution with 256 colors on VGA, better than 320x200. But the graphics bandwidth on AGA is higher than the ISA bus.

Hewitson · 09 July 2018, 13:09

I'll take your word for it. Regardless, AGA is still shit compared to a PCI SVGA card.

09 July 2018, 01:42	#1
BullyDog Registered User Join Date: Jul 2018 Location: Texas USA Age: 73 Posts: 184	(AGA) what's this? I see this "(AGA)" at the end of the game names. What is it? Thanks

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09 July 2018, 01:44	#2
Seiya Registered User Join Date: Nov 2014 Location: Italy Posts: 2,342	It's a game that support AGA Chipset on A1200 and A4000 Amiga model

09 July 2018, 01:54	#3
Amiga4000 Registered User Join Date: Nov 2014 Location: The Ford Galaxy Posts: 214	In spite of it's limitations, when implemented to it's fullest, I love AGA games. Explanation Link............ https://en.wikipedia.org/wiki/Amiga_...s_Architecture

09 July 2018, 02:00	#5
BullyDog Registered User Join Date: Jul 2018 Location: Texas USA Age: 73 Posts: 184	I see, so these Amigas are the ones with the VGA ports? As to the sound chip. still the SID?

09 July 2018, 03:27	#7
BullyDog Registered User Join Date: Jul 2018 Location: Texas USA Age: 73 Posts: 184	Ok, I got it. They use RGB ports and you can use a VGA adapter on it.

09 July 2018, 04:54	#9
chip Registered User Join Date: Oct 2012 Location: Italy Age: 49 Posts: 2,942	More simply, when you see AGA in games names you must select "A1200" in WinUAE

09 July 2018, 05:16	#11
chip Registered User Join Date: Oct 2012 Location: Italy Age: 49 Posts: 2,942	Yep you are right Amiga4000 I thinked BullyDog uses WinUAE but i can't know that

09 July 2018, 10:31	#14
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,772	HAM8 is not really useful for anything other than static images. You can do anything in 24-bit SVGA, and it's so much faster it's not funny. No comparison.

09 July 2018, 12:53	#18
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,772	I'm sure I used to run Windows 3.1 at 640x480 in 256 colours with an ISA VGA card. However we are discussing SVGA here. Many SVGA cards were PCI.

09 July 2018, 13:09	#20
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,772	I'll take your word for it. Regardless, AGA is still shit compared to a PCI SVGA card.

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