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Running OCS/AGA/RTG Demos

AGA Demospage  1 2 3 4 5 6 7 

Andy Hearn

Posts 328
04 Dec 2018 12:43


If they were RTG demos, I would have said that maybe the screenmodes the demos were looking for; aren't there, but that doesn't make sense. effectively they should be hard coded into the chipset, right?

sorry i'm no help, but that's a real head scratcher. have you got another monitor/tv to plug the vampire's H D M I into? maybe the screen you have doesn't like the output?


Bart Mikulski

Posts 100
04 Dec 2018 14:19


Thanks, I can try another monitor, but I doubt it's the output. This monitor is amazingly versatile considering resolutions/ outputs. Besides - I can clearly see an Amiga screen, it is just plain.
 
  I was thinking that the reason was the lack of FPU, but I tried it with femu .040 supplied with Gold 3 - same result.


Przemyslaw Tkaczyk

Posts 142
04 Dec 2018 15:09


Bart Mikulski wrote:

  I tried to run a few demos from this thread on Gold 3 (V600v2). Most work, but running Human Traffic and Starstruck - they launch, the music is there, but no animations, only white or black screen. It happened with one more demo too, can't remember which one, but in the middle. 
 
  What could be the reason?
 

 
The reason is the lack of hardware FPU. Not all demos are FEMU-friendly (library-based FPU emulation is way too slow for them).

GOLD3 for V2 cards has no FPU, whereas now I use V4 to record AGA demos (GOLD3 has both AGA and FPU on this card).


Bart Mikulski

Posts 100
04 Dec 2018 19:58


Przemyslaw Tkaczyk wrote:

Bart Mikulski wrote:

  I tried to run a few demos from this thread on Gold 3 (V600v2). Most work, but running Human Traffic and Starstruck - they launch, the music is there, but no animations, only white or black screen. It happened with one more demo too, can't remember which one, but in the middle. 
   
    What could be the reason?
 

 
  The reason is the lack of hardware FPU. Not all demos are FEMU-friendly (library-based FPU emulation is way too slow for them).
 
  GOLD3 for V2 cards has no FPU, whereas now I use V4 to record AGA demos (GOLD3 has both AGA and FPU on this card).

So - case solved. Thanks!



Przemyslaw Tkaczyk

Posts 142
05 Dec 2018 13:59


scoopex 47 wrote:

please try this on beta3
 
EXTERNAL LINK 

Hello again, Scoopex 47 :) You asked for it, and you got it - V4 (Standalone mode) 78MHz running "Relic" :) Finally a flawless performance. Enjoy!


EXTERNAL LINK 



Mr Niding

Posts 448
06 Dec 2018 09:57


Just dropping in to say thankyou Skipp for all the demo testing you are doing :)

As I commented on this demo just now;

"The demo itself is great. But the music is just out of this world imho. Had the Skipp demos running in the background while working in my homeoffice, and I just stopped and had to comment again on this demo :)"

EXTERNAL LINK 
So while you are "just" testing old demos, you are reminding us of the old demo gems, making sure we acknowledge the coding, graphics and music talent on the Amiga scene!


Przemyslaw Tkaczyk

Posts 142
07 Dec 2018 17:53


Thank you so much, Mr Niding :) It means a lot and I'm so happy that you enjoy and appreciate these demos as much as I do! I myself have always tried to convince people that while demos are just simply fun to watch and provide great deal of inspiration and appreciation for the platform, they are also perfect benchmarking tools - if you get the advanced, CPU/FPU-hungry demo looking good and running smooth - you know you're on the right track :) Also when you are dealing with the legacy chipset tricks it's really a great lesson in compatibility. Furthermore, you can easily compare the same demo running better or worse when you clock the core/memory higher, etc. Can't go wrong there. And lastly - putting these demos out, recorded on *real* hardware in real-time shuts a good number of doubtful "grouches/haters" up. Also, the unvaluable benefit of it is when occasionally a coder of a particular demo steps up to actually help our cause and suggests fixes (like Kiero, Loaderror, Stingray, Dodke or Deetsay).
 
Have a great weekend, and oh, more demos are coming :)


Przemyslaw Tkaczyk

Posts 142
11 Dec 2018 14:26


Time to showcase some more cool AGA intros running flawlessly on V4 standalone.

Loonies "Impossible" (40K, AGA/FPU, 1999)

EXTERNAL LINK 

RNO "Wessyde" (64K, AGA, 2004)

EXTERNAL LINK 

Loonies "Ikadalawampu" (4K, AGA/FPU, 2010)

EXTERNAL LINK 

Ephidrena "Psylteflesk" (4K, AGA, 2008)

EXTERNAL LINK 


Przemyslaw Tkaczyk

Posts 142
20 Dec 2018 13:05


Appendix "Up n'X"

EXTERNAL LINK 

Haujobb "Edit 0.5"

EXTERNAL LINK 
 


Markus B

Posts 196
20 Dec 2018 15:53


Given the raw horsepower and useful extensions of the 080, do you think such demos could run at the same nice speed, but instead of 320x256, running at 640x512 if properly recoded?


Don Ster

Posts 2
20 Dec 2018 17:52


Have you been able to run the Starstruck demo with the v4?

I saw the v2 video with SoftFPU and am very curious to know if it runs with a hardware FPU.

EXTERNAL LINK 

I just want to see it run faster than the Atari 060 version 8-)

Atari Falcon 060 to Amiga 060 comparison video:

EXTERNAL LINK


Przemyslaw Tkaczyk

Posts 142
21 Dec 2018 11:23


The Black Lotus "Starstruck (Final)" on V4/85MHz standalone.

EXTERNAL LINK 

Not yet "faster" than Falcon's ct60e but I'm guessing it has something to do with VGA/Videl vs PAL/AGA-C2P, and not just raw CPU/Memory speed (Falcon's Videl has a native 16-bit chunky mode).


Przemyslaw Tkaczyk

Posts 142
21 Dec 2018 12:28


Two IRIS AGA/FPU demos that before refused to work, but with the current V4 Standalone AGA core (rev. 6023) they are flawless.

 
IRIS "Light II"

EXTERNAL LINK 
 
IRIS "Heart-Core"

EXTERNAL LINK 



Don Ster

Posts 2
21 Dec 2018 18:05


Hi Przemyslaw,

Starstruck looks pretty good and runs pretty well.  Thanks for the upload.  I was hoping it was faster than the Atari, but it seems as fast as the 060 Amiga version.

(Atari faster than Amiga, say it ain't so, Joe!)



Przemyslaw Tkaczyk

Posts 142
02 Jan 2019 10:17


Nature "Naughty" (2017)

EXTERNAL LINK 

Corrosion "Project42" (1999)

EXTERNAL LINK 

Corrosion "Foam" (1998)

EXTERNAL LINK 

Haujobb "Aphrodisiae" (1998)

EXTERNAL LINK 



Przemyslaw Tkaczyk

Posts 142
11 Apr 2019 15:30


Haujobb & Ghostown "Beam Riders" (final version 1.2) on A500/V4 (85MHz, core revision 5510).


EXTERNAL LINK


Andy Hearn

Posts 328
11 Apr 2019 15:37


well thats my train ride home sorted out, many thanks for the uploads :D


Przemyslaw Tkaczyk

Posts 142
12 Apr 2019 09:53


The Black Lotus "Rift" (2014) final version running on V4 (core 5510, 85MHz, forced single pipe).


EXTERNAL LINK


Andy Hearn

Posts 328
12 Apr 2019 11:46


amazing. always loved TBL's productions, from "tint" and "glow" back in the day, when a 50Mhz 030 would make us go "wow!".

If there's one reason to have AGA in the vampire core, it's the demo scene stuff.


Roger Andre Lassen

Posts 114
12 Apr 2019 17:09


One of my favourites.. awesome demo.

Hopefully someone is coding something for the vampire right now :-) a hi-res - vampire-only-demo. Would kick ass :-)

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