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Author Topic: Life after OS 4.0  (Read 4843 times)

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Offline vortexau

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Re: Life after OS 4.0
« Reply #14 from previous page: January 21, 2004, 05:38:29 PM »
That being said (I do use a PicassoII, BTW), I'm wondering if ANY Gfx Card can do Colour-Cycling?  :-?
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Offline Crumb

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Re: Life after OS 4.0
« Reply #15 on: January 21, 2004, 07:43:15 PM »
It should be possible to make Clolour-Cycling changing the colour table...
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Offline Waccoon

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Re: Life after OS 4.0
« Reply #16 on: January 21, 2004, 07:47:49 PM »
@Crumb:  Yup, as the Allegro programming library handles color-shifting automatically on modern hardware.  It can only be done with 256 or fewer colors, though.  16, 24, and 32-bit frambuffers work very differently.
 

Offline Crumb

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Re: Life after OS 4.0
« Reply #17 on: January 21, 2004, 09:14:09 PM »
@Waccoon
"16, 24, and 32-bit frambuffers work very differently"

yes. That's why doing a simple colour fade is quite hard with 16 and 24 bit displays, you have to rewrite the entire display

I guess that thanks to the 8-bit transparency of a 32bit display it would be faster to do fades with 24bit screens
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Offline Im>bE

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Re: Life after OS 4.0
« Reply #18 on: January 23, 2004, 05:29:41 PM »
I was trying to troll
as best I could.
dont be so hard on me...

When I said 50fps,
I ment on games. (even multitasking games)

The AOS3.x blit routines are actually very slow,
because James Conwell made assembly AGA blit routines
that are 5 times faster,
in his game Total Chaos.
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Offline chris

Re: Life after OS 4.0
« Reply #19 on: January 23, 2004, 06:07:26 PM »
Quote

Cymric wrote:
There will always be people who continue to use and foster their ageing machines. I remember that two years ago I came across a site of a guy who was still using an Amstrad computer. That's a Z80-based machine with, in its basic configuration, 64 KB (!!) of RAM. He had equipped it to the max, and it did everything he wanted to do. It made and still makes me wonder if people are still using their ZX Spectrums, VIC-20s, Tandy TRSs or even more ancient equipment than that.


Read this.  You may find it quite enlightening  :-)

Chris
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Offline DonnyEMU

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Re: Life after OS 4.0
« Reply #20 on: January 23, 2004, 06:58:15 PM »
A comment about vga cards. Remember at the time AGA was developed and released many 8 bit vga cards were just coming of age with 256 colors (8 bit not 24 or 32 bit) and not all of them had bit block xfer capabilities and some of them even had separated and non-linear memory.

AGA was very forward thinking at the time, the thing I hated most that when it went into a "multiscan" mode pull-down screens didn't work or didn't show the screens behind correctly if they weren't in the same scan mode (which makes sense), you'd see a screen with nothing on it from that screen mode (without any mode promotion).

I think the one thing I miss and will always miss though is those pull down screens.. It made the Amiga paradigm unique compared to windows, but most OS'es and systems just uses windows but don't have separate screens (unless they have a "virtual" screen manager).

It was one of the truly unique and useful things the Amiga User Interface brought to the world..
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Offline downix

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Re: Life after OS 4.0
« Reply #21 on: January 23, 2004, 09:06:56 PM »
@DonnyEMU

And don't forget, AGA was a "hack" created after AAA had begun development.

Imagine if AAA was pushed instead for release in 1990 as originally planned.
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Offline Amiperson2K3

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Re: Life after OS 4.0
« Reply #22 on: January 23, 2004, 09:39:41 PM »
After all the hardcore Amiga users buy the hardware and os4 i would say that would be the end of the market for os4 and the A1.