Problematic Demos.

[heavy]

Originally Posted by amilo3438

Work For Nothing (Demo) by Turnips

A500 ECS 1mb ... some glitches pic.1, pic.2 , and strange line pic.3 !!!
(Note: It happens the same also on AGA 1200 ... hm, maybe the dms is damaged ?!)

I don't know if the dms was damaged but when we take a look at the memory after demo was depacked, the picture is already damaged.
the damage seems to be the picture was dumped from memory after first execution : we can see the object blitted on it.
the only solution will be to find a "good" version of the file if exists, or the original picture from the author

[Tomislav]

Originally Posted by heavy

I don't know if the dms was damaged but when we take a look at the memory after demo was depacked, the picture is already damaged.
the damage seems to be the picture was dumped from memory after first execution : we can see the object blitted on it.
the only solution will be to find a "good" version of the file if exists, or the original picture from the author

I think that it is garbage from unused bitplanes. Picture uses less bitplanes than this demo defined. While clearing it clears parts of all used bitplanes. That's about first picture.

On second picture demo is using screen from first picture. There are at least 2 images on 2nd picture. Looks that they are using all defined bitplanes, but both images are smaller than defined bitplanes.

I don't know about lines on third picture. Maybe some leftover.

Did somebody tried to run demo on real Amiga?

[heavy]

same problem on real Amiga.
garbage is from the "sun" bob
I picked each 5 bitplans and cleaned them one by one.
the bitplans 1 and 2 are clean
garbage start at the end of bitplan 3 and bitplan 4 and 5
result :


reinjected in the file, that work (in the zone)
too bad it's not the original picture ...

[Toni Wilen]

After many years, "Demos with "blitter active" issues" should finally work correctly, for example TLC Lotus 2 crack intro. Real blitter logic is finally known.

[amilo3438]

Originally Posted by Toni Wilen

After many years, "Demos with "blitter active" issues" should finally work correctly, for example TLC Lotus 2 crack intro. Real blitter logic is finally known.

Pax Americana by Complex -> http://janeway.exotica.org.uk/release.php?id=19676

Found it still glitches at "credits for intro" on 3rd row!

Maybe than is not blitter active error?

Edit: It happens only on 1st time scrolling. On 2nd time it does not happens, but some small line it is still there.

[Zarnal]

Hello,

can you post a screenshot please ? Thanks.

[Toni Wilen]

Originally Posted by amilo3438

Pax Americana by Complex -> http://janeway.exotica.org.uk/release.php?id=19676

Found it still glitches at "credits for intro" on 3rd row!

Maybe than is not blitter active error?

Edit: It happens only on 1st time scrolling. On 2nd time it does not happens, but some small line it is still there.

It happens on my real A500 too. (I am not sure if I waited long enough to see it, I think I thought it happened at the beginning). Interestingly "Alvin's Tale Edit" variant (adf) does not have the glitch.

Possibly it only happens when running "plain" executable in 60 character mode or something.

[Zarnal]

Issue not related only with latest beta :

Batman-VuelveSlide2: After the intro, there is a problem. The slideshow only displays a black screen. Since WinUae 4.4 (its Ok with v4.3.0, see pic 1). Quickstart A500.

[amilo3438]

Batman Vuelve Sildeshow II (Slideshow) by Batman Group

Checked in latest WinUAE4900 Beta20 and still black screen after intro and LMB on mouse!

The problem starts from WinUAE4400! (probably in some beta - did not checked)

PS. See also on above Zarnal post!

[Zarnal]

More information on the issue in this demo :
It seems that the display program "showiz" with its parameters crashes on launch (Quickstart A500) when trying to display the first image ( and behind the black screen a crash occurs in the form of a requester ). If you press Amiga + B (Cancel), "Guru Meditation 00000003.00C05128" software failure occurs.

[Toni Wilen]

Fixed. Again

[Zarnal]

While testing a multitude of OCS / ECS demos and intros compilations (for the beta version), I found few suspicious cases that I will detail later (not related to the beta). I must do additional checks.

[amilo3438]

Originally Posted by Toni Wilen

EDIT: first ini check is <name of executable>.ini, so if you have winuae64.exe, winuae64.ini is attempted first.

That is great! I did not know that this already exists. Thanks for the info.

Btw. I noticed that "winuae.ini" change file "Date modified" field after every winuae exit! (is that correct behaving?) EDIT: Yeah, it happens when switching between emu versions because is shared!
With <name of executable>.ini this happens only if something is changed in winuae (f.e. something in Paths) and not after every winuae exit!

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Cool Spot +12 (Crack Intro/Trainer) by Scoopex

[A500 ECS 512+512] screen glitches in ECS!? (fine in OCS)(probably this is expected as happens also in 4400)

Btw. Eliminator - 100% +15 (Crack Intro/Trainer) by Scoopex
--> Same demo but work fine in both OCS/ECS!

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New Import (Intro) by Falcons

[A500 ECS 512+512] screen glitches in ECS!? (glitches different in 4400!?)

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Ghostbusters II Preview (Crack Intro) by Double Density Crew

[A500 ECS 512+512] scroller glitches in ECS!? (glitches different in 4400!?)

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Captain Fizz Meets The Blaster-Trons (Crack Intro) by Beyonders & Vision Factory

[A500 1.2 OCS 512] glitches badly!? (also in 4400!?)

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[Toni Wilen]

Originally Posted by amilo3438

[A500 ECS 512+512] screen glitches in ECS!? (fine in OCS)(probably this is expected as happens also in 4400)

Btw. Eliminator - 100% +15 (Crack Intro/Trainer) by Scoopex
--> Same demo but work fine in both OCS/ECS!

Normal.

New Import (Intro) by Falcons

[A500 ECS 512+512] screen glitches in ECS!? (glitches different in 4400!?)

Writes garbage to all ECS only programmed mode registers. Blank screen when using most real hardware configurations but might be visible when not using composite sync.

Ghostbusters II Preview (Crack Intro) by Double Density Crew

[A500 ECS 512+512] scroller glitches in ECS!? (glitches different in 4400!?)

Needs OCS but glitch changed because it is refresh slot conflict and it didn't trigger simulated refresh glitch in recent betas. (real glitch looks worse)

Captain Fizz Meets The Blaster-Trons (Crack Intro) by Beyonders & Vision Factory

[A500 1.2 OCS 512] glitches badly!? (also in 4400!?)

Needs A1000 (A1000 Agnus). A500 = glitches.

[amilo3438]

Megatut (Demo) by Vortex 42

[A500 ECS 512+512] scroller is on the top in ECS only!? (in 4400 looks fine!?)

(tested in WinUAE b30)

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L'homme Qui N'aimait Pas Les Réverbères (Demo) by Syntax Error

[A500 ECS 512+512] some glitches in ECS but the scroller looks fine!? (same in 4400!)

(according to the link the demo is from 1991 so maybe it should work fine also in ECS)

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Earsmashers Vol 1 Intro (Intro) by Stack

[A500 1.2 OCS 512] scroller is missing (see on link pic.)!? (Edit: fine in 4400!)(broken in b30!)

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Knights Of The Crystallion (Import Intro) by Orion (old)

[A500 1.2 OCS 512] some glitches on the bottom (as on link pic.)!? (same in 4400!)

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[Toni Wilen]

Originally Posted by amilo3438

Megatut (Demo) by Vortex 42

[A500 ECS 512+512] scroller is on the top in ECS only!? (in 4400 looks fine!?)

(tested in WinUAE b30)

Another demo that writes garbage to ECS programmed mode registers. Result is blank screen (or display saying "no signal" or similar).

00073a1c: 1bdc fffe            ;  BEAMCON0 := 0xfffe

UAE could detect impossible cases (totally impossible H/V sync timing etc) and simply show HALT message but I don't think it would be worth the trouble.

L'homme Qui N'aimait Pas Les Réverbères (Demo) by Syntax Error

[A500 ECS 512+512] some glitches in ECS but the scroller looks fine!? (same in 4400!)

(according to the link the demo is from 1991 so maybe it should work fine also in ECS)

Looks mostly same on real ECS A500. (part of garbage might be uninitialized memory)
All kinds of garbage appears if ECS. (This is not your "usual" ECS glitch)

Earsmashers Vol 1 Intro (Intro) by Stack

[A500 1.2 OCS 512] scroller is missing (see on link pic.)!? (Edit: fine in 4400!)(broken in b30!)

I suspected that this kind of buggy display setup might break in recent update and I was supposed to test it but I forgot..

Knights Of The Crystallion (Import Intro) by Orion (old)

[A500 1.2 OCS 512] some glitches on the bottom (as on link pic.)!? (same in 4400!)

It is correct. Probably TV was used and it was hidden in overscan.


btw, shouldn't these be in your demo thread? At least confirmed incompatible demos.

[amilo3438]

Originally Posted by Toni Wilen

btw, shouldn't these be in your demo thread? At least confirmed incompatible demos.

Maybe but I am too lazy to do it. (please, move what you think it belongs there)

Btw. Or maybe I can continue to report in "Problematic demos" thread instead of this one? (in case I find something new)

EDIT: Just to note, I have no intention of performing a complete demo testing like the one some 8 years ago, just what I find on my old hard drive! (and as long as I want to)

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New Import (Intro) by Hotshotz

[A500 1.2 OCS 512] I guess it is simmilar problem to "Earsmashers Vol 1 Intro (Intro) by Stack"!? (fine in 4400!)(broken in b30!) -> Maybe already fixed?

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Intro 7 Preview (Intro) by Delight

[A500 1.2/1.3 OCS 512] Missing the right blue vertical line!(fine in 4400!)(Edit:broken in b30!) -> Maybe already fixed? (Note: Some glitches appears after a while in scroller!?)

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Frost Byte (Crack Intro) by Defjam

[A500 1.2 OCS 512] Black screen with music!? (fine in 4400!)(broken in b30!) -> Maybe already fixed?

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Demo (Demo) by Asia Inc.

[A500 OCS 512+512] !? What missing is logo (see on link pic.)!? (same in 4400!) -> BINGO! EDIT: I was not patient enough to wait!

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[Toni Wilen]

Originally Posted by amilo3438

Maybe but I am too lazy to do it. (please, move what you think it belongs there)

Btw. Or maybe I can continue to report in "Problematic demos" thread instead of this one? (in case I find something new)

Moved, this is better thread.

EDIT: Just to note, I have no intention of performing a complete demo testing like the one some 8 years ago, just what I find on my old hard drive! (and as long as I want to)

You can keep doing it as long as you want. Especially demos that do have unexpected glitches on real hardware makes this more interesting

New Import (Intro) by Hotshotz

[A500 1.2 OCS 512] I guess it is simmilar problem to "Earsmashers Vol 1 Intro (Intro) by Stack"!? (fine in 4400!)(broken in b30!) -> Maybe already fixed?

Yes, same.

Intro 7 Preview (Intro) by Delight

[A500 1.2/1.3 OCS 512] Missing the right blue vertical line!(fine in 4400!)(Edit:broken in b30!) -> Maybe already fixed? (Note: Some glitches appears after a while in scroller!?)

Glitches A500 confirmed. Missing line is a bug.

Frost Byte (Crack Intro) by Defjam

[A500 1.2 OCS 512] Black screen with music!? (fine in 4400!)(broken in b30!) -> Maybe already fixed?

Same.

Note that most demos that have black screen (in b30) usually correctly have black screen when combined with ECS Denise.

[amilo3438]

Originally Posted by Toni Wilen

Glitches A500 confirmed. Missing line is a bug.

Regarding the missing blue line is a bug, I am still not sure do I understand it correctly!
So I wonder should the line be there or not if it is a bug? (thanks)
(tested on latest winuae.7z shows it is not there - is that correct?)

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Btw. testing the latest winuae.7z I noticed HUMANOIDS-MadPlayfield has some line glitches on the upper part of the screen! (OK, this happens on A500 1.2/1.3 OCS 512 config.)(EDIT: with +512 of Slow mem looks fine)

[amilo3438]

Originally Posted by Zarnal

While testing a multitude of OCS / ECS demos and intros compilations (for the beta version), I found few suspicious cases that I will detail later (not related to the beta). I must do additional checks.

What additional checks!? (this is getting really interesting)