Problematic Demos.

[amilo3438]

After six weeks of intensive WinUAE demo/intro problem searching now begin to feel a little exhausted, so maybe its time to slow down or take a break for one week or so, we'll see ... and continue maybe after 2.7.0 release.

In a mean time, of course and after, all others are also welcome here to post their demo/intro problem findings ... I will check it periodically and update the 1st page accordingly.

[amilo3438]

Digital Innovation (Trackmo) by Anarchy

A500 OCS 0.5mb+0.5mb ... weird behaving on lower 1/3 of screen?! (pic.1,2,3)

p.s. It looks to work fine in 2.6.1 (pic.4).

[amilo3438]

Delirium (Demo) by Complex

Missing lower line?! Does it happens also on a real A500?

[Toni Wilen]

Originally Posted by amilo3438

Delirium (Demo) by Complex

Missing lower line?! Does it happens also on a real A500?

Yes.

Originally Posted by amilo3438

Digital Innovation (Trackmo) by Anarchy

Experimental test code remaining in b9. Fixed.

Originally Posted by amilo3438

EDIT3: First Release in 1987 (Intro) by Amiga Industries & Kingsoft ... see on pic.3!

80 character mode required.

Originally Posted by heavy

about "Shed Tears"/Ozone. a slideshow in interlaced mode with scrolltext on pictures :
http://janeway.exotica.org.uk/release.php?id=5351

screenshot in 2007 :


since "remove interlace artifacts", the scroll is half good if enabled and not so good if disabled (issue depend of the demo and way used to display interlaced...)

This can't be fixed (without having real interlaced display). "remove interlace artifacts" can only work if internal bitplane contains both fields and both fields are updated at the same time (it is handled as progressive internally) and only display output is interlaced. (like WB screen)

Demos can have all kinds of copper and other tricks, usually visible display is totally different than it looks like in memory..

[amilo3438]

JFI ... After verifying todays WinUAE test version 2013-10-21 ...
all known demo/intro problems that has been fixed in latest beta versions (1st page - Already "Fixed" Demos) confirmed to work fine in this version.

EDIT: It could be maybe good candidate for 2.7.0 (in case that some new "fix" did not broke something else by accident ) !!!

[amilo3438]

Alpha and Omega (Demo) by Pure Metal Coders

Some glitches on lower screen part?! Does it happens also on a real A500?

EDIT: Probably not so important, but it works fine in WinUAE2010 (2009-12-23) version! (@heavy - thanks for info!)

[heavy]

Originally Posted by amilo3438

Alpha and Omega (Demo) by Pure Metal Coders

Some glitches on lower screen part?! Does it happens also on a real A500?

no

works with an old winuae version

[Toni Wilen]

Originally Posted by amilo3438

Alpha and Omega (Demo) by Pure Metal Coders

Some glitches on lower screen part?! Does it happens also on a real A500?

EDIT: Probably not so important, but it works fine in WinUAE2010 (2009-12-23) version! (@heavy - thanks for info!)

"MoreNewStuffy / PlasmaForce" update was not completely correct.

Writing to BPLxPTL when same bitplane is fetched in next cycle works differently if it is cycle that adds modulos vs normal non-modulo cycle. (MoreNewStuffy was non-modulo case, this one is modulo case)

Fixed.

works with an old winuae version

Never say something like that here! Only acceptable way: Same image (CRC confirmed) does work with vx.y/it broke in vz.zz.

[heavy]

Originally Posted by Toni Wilen

Never say something like that here! Only acceptable way: Same image (CRC confirmed) does work with vx.y/it broke in vz.zz.

eh stay calm

I used winuae since version 0.8, with same images (my own tested on A500)
I only say that the last time I tested AlphaOmega with my image, there are no glitchs. no more.
I can't remember the version exactly : 2.0.1 seems good
the CRC of my version of AO : B12426BA

[heavy]

same thing about "Deformations/Deform"
http://janeway.exotica.org.uk/release.php?id=8393

the end part corrupted sound if due to a bad dump (tested on real A500), but also if no clean start and cycle exact enabled with a good dump.
CRC of my version (different of exotica) : 88E02B3A

good version of Trashcan/Wizzcat (start logo and end part) adf : CRC 34880480
a good dump of Hardwired (2 adfs) : disc1 F8B9D6BA - disc2 BF608522
a good one of Ecliptica/trsi adf : BF7550DE
a good one of Masterpieces/kefrens adf : 3D430A60

[heavy]

about Silkcut, with the final version
http://janeway.exotica.org.uk/release.php?id=12313

so, yes the last time I started it with 68040/2 Mb chip, 8 Mb fast, 32 Mb zfast config, that was in 2006
I retested it with last versions (2.5.1, 2.6.1,2.7 b6,7,8,9) and I got a "out of memory - can't allocate 10244 bytes" at the end of the "mountains" part, even with more than 32 mb.
wrong config or ?

[Toni Wilen]

Originally Posted by heavy

about Silkcut, with the final version
http://janeway.exotica.org.uk/release.php?id=12313

so, yes the last time I started it with 68040/2 Mb chip, 8 Mb fast, 32 Mb zfast config, that was in 2006
I retested it with last versions (2.5.1, 2.6.1,2.7 b6,7,8,9) and I got a "out of memory - can't allocate 10244 bytes" at the end of the "mountains" part, even with more than 32 mb.
wrong config or ?

It is bug in demo, something corrupts memory somewhere if timing is not what demo expects (or something like that), I don't really about newer demos, 2000+ or so. (EDIT: I mean new demos that are not for basic unexpended Amigas)

[Toni Wilen]

Originally Posted by heavy

same thing about "Deformations/Deform"
http://janeway.exotica.org.uk/release.php?id=8393

the end part corrupted sound if due to a bad dump (tested on real A500), but also if no clean start and cycle exact enabled with a good dump.

This demo has buggy trackloader. If it finds sector header at the end of track buffer (sector contents ends early), it detects checksum error correctly but then it sets disk side selection to zero and retries.. So if this error happens on side 1, it retries from wrong disk side..

This can happen on real hardware too, depending on rotation speed of drive that was used for writing and reading because trackread buffer is too small.

[amilo3438]

Originally Posted by heavy

about Silkcut, with the final version
http://janeway.exotica.org.uk/release.php?id=12313

Please no AGA demos here! ... this thread is only for OCS/ECS Amiga demos/intros/etc. WinUAE problems!

To collect AGA demos problems is better then to open a new thread ... and this will probably get more in focus in future when it will got status "I care".

[heavy]

oh! keep calm !!!

it's just some demos tests, not a question of life or death

[amilo3438]

Originally Posted by heavy

oh! keep calm !!!

it's just some demos tests, not a question of life or death

Of course its not.

But for AGA, please open a new thread titled f.e. "Problematic AGA Demos" or similar if you have some more about! Thanks.

[heavy]

no more aga, just a question :
I read somewhere something about Twisted/Polka Brothers , but I can't find the thread ?
2 bugs in first part are fixed with whdload patch, but there is another one : the tunnel in the second part. seems to be a bad dump disks (3 adfs versions tested), but the bug is always here with the HD version.


About Deformations/Deform, try this adf version (the end part corrupted digit) :
if that works, that was only 3 bytes to fix (or 2 lines to swap) on the trackloader (checksum error flag)
edit : i also fixed the boot

(some years ago, I fixed Rampage/TEK crash... but no more needed since version 1.6.2 )

[amilo3438]

Originally Posted by heavy

no more aga, just a question :
I read somewhere something about Twisted/Polka Brothers , but I can't find the thread ?

"no more aga, just a question" ... very, very funny!

Btw. you will find it on "support.WinUAE" thread on page 3!

[heavy]

ah! thanks

[Toni Wilen]

Don't bother with AGA demos, you won't get reply from me. Usual reasons. (EDIT: and currently it is really pointless idea, until 68020 stuff stabilizes, if ever)