Problematic Demos. - Page 22

Toni Wilen · 06 December 2013, 21:12

Quote:

Originally Posted by amilo3438

New Beginning (Demo) by Epsilon Design

A500 OCS KS1.2/1.3 ... scrolling text glitches in star window (pic.1)!

p.s. Most likely CPU emu timing as it doesnt happens if CE=Off !!!

Fixed. (MOVE from SR to memory was too fast and it only caused problems because demo is coded crappily, scrolling is pure CPU, no blitter whatsoever used. Which was good!)

Quote:

No Prayer For The Dying (Demo) by Epsilon Design

A500 OCS/ECS (most common) ... 3d object does not rotate smoothly -> like occasional hesitation in rotation is happening!

A500 confirmed.

Quote:

IT, Razor 1911, Abnormal, Hoaxers and Network Gigaparty - party report (Demo) by Escape & Outlaws

A500 OCS/ECS (most common) ... strange line appears (pic.2)!

Emulation bug. Mid horizontal line hires to lores change, for some reason last pixel row of image is delayed.

Quote:

Technic Confusion (Demo) by Exalis

A500 OCS/ECS (most common) ... a little strange, looks like right line is missing (pic.3)!

No, it isn't. A500 confirmed.

Quote:

Assemblytro (40k Intro) by Excide

A500 OCS/ECS (most common) ... glitches on logo rotation (pic.4)!

A500 confirmed.

Toni Wilen · 07 December 2013, 09:16

Quote:

Originally Posted by amilo3438

New Stuff (Intro) by Iron Eagle Crew

A500 OCS/ECS (most common) ... see pic.1 !!!

Demo Compilation 2 Intro (Intro) by Irongods

A500 OCS/ECS (most common) ... see pic.2 !!!

Humle I (Demo) by J-Beam

A500 OCS/ECS (most common) ... see pic.3 !!!

We Import All to Finland (Intro) by Ksylitol

A500 OCS/ECS (most common) ... glitches -> pic.4 !!!

All confirmed. (both A500 and A1000)

Irongods needs 80 character mode.

Toni Wilen · 07 December 2013, 11:26

Quote:

Originally Posted by amilo3438

Crazy World (Demo) by Dioxide

A500 OCS/ECS (most common) ... some white dashes on copper bars (pic.1)!

The usual. (But this time it is pure CPU timed, it can't be CPU issue, at least only CPU because copper timed also had same glitches. It must be something unexpected because I can't find anything wrong from DMA timing)

Quote:

Demo by Dope

A500 OCS/ECS (most common) ... a few glitches on logo "DOPE" after some 18 sec from beginning! (Note: It happens too fast so no pictures is taken!)

CPU timing issue most likely. (Does not happen on A500)

Quote:

Revenge (Intro) by Enator

A500 OCS/ECS (most common) ... some glitches (pic.2)! (The demo might be damaged!)

Confirmed (A500 & A1000)

Quote:

Little Meeting Mentro (Intro) by Eon

A500 OCS/ECS (most common) ... weird, the dashes inside copper effect (pic.3) ... as seeing such effect 1st time so it needs verifying !

Confirmed. It does look wrong but it is correct.

amilo3438 · 07 December 2013, 14:06

Sinemania (Intro) by Latex

A500 OCS/ECS (most common) ... something strange is happening here ... pic.1 !!!

Snigelsaft (Demo) by Latex

Hm, this is from 1999 so probably not for OCS or ECS ... but on 1200 AGA it works until part where it starts slow down - see pic.2 !!!

p.s. This should probably be opened under AGA topic, but as such topic hasnt been opened yet, so I putting it here to not be forgotten !!!

Toni Wilen · 07 December 2013, 15:30

Quote:

Originally Posted by amilo3438

Sinemania (Intro) by Latex

A500 OCS/ECS (most common) ... something strange is happening here ... pic.1 !!!

Fixed. It writes to blitter registers after starting it and this change made blitter to keep writing same data repeatedly. (It is demo bug and it only accidentally works because copper is active at the same time which blocks the CPU from writing to other blitter registers until blit has finished..)

Quote:

Snigelsaft (Demo) by Latex

Hm, this is from 1999 so probably not for OCS or ECS ... but on 1200 AGA it works until part where it starts slow down - see pic.2 !!!

p.s. This should probably be opened under AGA topic, but as such topic hasnt been opened yet, so I putting it here to not be forgotten !!!

It probably requires better config than basic A1200. It is too new. For me AGA means unexpended A1200, anything else will be ignored completely. (Unexpended A1200 will also be ignored for now but not forever)

amilo3438 · 07 December 2013, 16:43

Quote:

Originally Posted by Toni Wilen

It probably requires better config than basic A1200. It is too new. For me AGA means unexpended A1200, anything else will be ignored completely. (Unexpended A1200 will also be ignored for now but not forever)

Oh sorry, I forgot to mention it is just for info ... anyway, I tried it in basic 1200 and it works good until when becomes to slowing down on some point ... probably will need also testing on a real A1200 (basic) ... one day maybe.

EDIT: Just to not forgot mention that with the sound is easy to detect a point on which becomes slowing down ... and for sure it doesnt require better config than just a basic A1200.

p.s. So another demo has been fixed and also such fast ... many thanks master Toni !!!

Toni Wilen · 08 December 2013, 10:06

Most vertical copper bar glitches are now fixed. (not all, remaining are caused by real timing issues)

It is time to wear brown paper bag again (it has been quite long since last time!).

Blitter and bitplane DMA was emulated in separate passes during the time CPU was doing "nothing" (waiting for memory, doing internal calculations) which of course won't work that well if there are tiny blits started mid-scanline are blitter is really "racing the beam" (safety margin is only few clocks!)

If blitter writes to same addresses that bitplane dma fetches in same scanline, blitted data was visible on screen, even if blitter writes should have happened after bitplane dma fetched them.

(This is yet another performance optimization, used in non-ce modes)

Note that this only caused visual glitches in some quite rare situations, it didn't have any effect on emulation timing or compatibility (from running program point of view of course).

EDIT: It can increase CPU requirements in some demos, even if they didn't have any glitches. There is no way around it.

amilo3438 · 08 December 2013, 16:55

Just Another Compilation (Intro) by Magnetic Fields

A500 OCS/ECS (most common) ... pic.1 (Note: It doesnt happens if CE=OFF) !!!

Winter Conference '91 Report (Intro) by Magnetic Fields

A500 OCS/ECS (most common) ... small glitches (pic.2) !!! (but doesnt if mem = 0.5 chip only!!!)

Toni Wilen · 08 December 2013, 18:49

Quote:

Originally Posted by amilo3438

Just Another Compilation (Intro) by Magnetic Fields

A500 OCS/ECS (most common) ... pic.1 (Note: It doesnt happens if CE=OFF) !!!

Fixed.

Another program that accidentally changes blitter mode while it is active (without bad side-effects this time), some tweaks needed to not confuse emulation too much.

Quote:

Winter Conference '91 Report (Intro) by Magnetic Fields

A500 OCS/ECS (most common) ... small glitches (pic.2) !!! (but doesnt if mem = 0.5 chip only!!!)

A500 confirmed.

amilo3438 · 08 December 2013, 20:48

Gastkammare (Demo) by Massive

A500 OCS/ECS (most common) ... glitches on demo part -> see pic.1 (Note: It doesnt happens if CE=OFF) !!!

Expiration (Demo) by Mayhem

A500 OCS/ECS (most common) ... glitches -> see pic.2 (Note: On 2.6.1 it happens but looks differently, on 2.0.1 it didnt happens.)

Paracetamol (Demo) by Mayhem

A500 OCS/ECS (most common) ... something strange happens to pattern shown on pic.3 (Note: It last very short time.) !!!

New Stuff (Demo) by Megapowers

A500 OCS/ECS (most common) ... the lower scroller is shifted to left side -> pic.4 !!! (Note: With 512 chip only it doesnt happens!)

amilo3438 · 09 December 2013, 18:53

Quote:

Originally Posted by Toni Wilen

Fixed.

Another program that accidentally changes blitter mode while it is active (without bad side-effects this time), some tweaks needed to not confuse emulation too much.

Very good, but it still doesnt work correct in latest winuae.zip test version!

p.s. Its always good to have latest test version during verifying demos/intros!

Toni Wilen · 09 December 2013, 18:56

Quote:

Originally Posted by amilo3438

Very good, but it still doesnt work correct in latest winuae.zip test version!

Unfortunately I have to again say "Works for me" because I can't see anything useful. Sorry.

amilo3438 · 09 December 2013, 19:05

Latest version I have is winuae.zip 2013-12-08 17:39 ... and that one is still on dl link!

p.s. Maybe the newer version on which works is not updated on DL link!

Toni Wilen · 09 December 2013, 19:50

For some reason it was too old version, updated now.

NOTE: compilation options changed, may cause unexpected side-effects.

amilo3438 · 09 December 2013, 20:12

Quote:

Originally Posted by Toni Wilen

Unfortunately I have to again say "Works for me" because I can't see anything useful. Sorry.

Well, it works now for me too in this updated version.

amilo3438 · 10 December 2013, 16:09

We're doing the Charts (Intro) by Nebula

A500 ECS (1mb chip) ... pic.1 !!!

Copper Bandwaggon (Demo) by New Age

Cant make it to run in any of QS A500 configurations !!! (Note: The demo is from 1990.)

No Sleeping (40k Intro) by Offence

A500 OCS/ECS (most common) ... glitches on part ... pic.2 !!! (Note: It doesnt glitches that part on A1200, but anyway it will need verifying on a real A500 to be sure.)

Tiny Intro (Intro) by Orb

A500 OCS/ECS (most common) ... some line appears ... pic.3 !!!

Toni Wilen · 11 December 2013, 20:07

Quote:

Originally Posted by amilo3438

Gastkammare (Demo) by Massive

A500 OCS/ECS (most common) ... glitches on demo part -> see pic.1 (Note: It doesnt happens if CE=OFF) !!!

Fixed. New undocumented feature: last line of field can't have bitplane dma active (even if DIWSTOP hasn't matched yet)

Quote:

Expiration (Demo) by Mayhem

A500 OCS/ECS (most common) ... glitches -> see pic.2 (Note: On 2.6.1 it happens but looks differently, on 2.0.1 it didnt happens.)

Blitter modifications while active (check the log)

Quote:

Paracetamol (Demo) by Mayhem

A500 OCS/ECS (most common) ... something strange happens to pattern shown on pic.3 (Note: It last very short time.) !!!

A500 confirmed.

Quote:

New Stuff (Demo) by Megapowers

A500 OCS/ECS (most common) ... the lower scroller is shifted to left side -> pic.4 !!! (Note: With 512 chip only it doesnt happens!)

I can't see any difference.

Toni Wilen · 11 December 2013, 20:15

Quote:

Originally Posted by amilo3438

We're doing the Charts (Intro) by Nebula

A500 ECS (1mb chip) ... pic.1 !!!

A500 confirmed.

Quote:

Copper Bandwaggon (Demo) by New Age

Cant make it to run in any of QS A500 configurations !!! (Note: The demo is from 1990.)

Fixed. Invalid (bit 0 inverted) CIA address in prefetch/cycle-exact mode wasn't properly emulated (no, bset #9,$bfe000 is not same as bset #1,$bfe001!)

Quote:

No Sleeping (40k Intro) by Offence

A500 OCS/ECS (most common) ... glitches on part ... pic.2 !!! (Note: It doesnt glitches that part on A1200, but anyway it will need verifying on a real A500 to be sure.)

A500 confirmed. (Needs faster system)

Quote:

Tiny Intro (Intro) by Orb

A500 OCS/ECS (most common) ... some line appears ... pic.3 !!!

A500 confirmed.

amilo3438 · 11 December 2013, 21:07

New Overgrowth Production (Intro) by Overgrowth

A500 OCS/ECS (most common) ... not sure is that interlace mode or not ... pic.1 !!!
... it reminds a little on "COOL FRIDGE by UPFRONT" syncronize CPU to display" issue!

Toni Wilen · 11 December 2013, 21:21

Quote:

Originally Posted by amilo3438

New Overgrowth Production (Intro) by Overgrowth

A500 OCS/ECS (most common) ... not sure is that interlace mode or not ... pic.1 !!!
... it reminds a little on "COOL FRIDGE by UPFRONT" syncronize CPU to display" issue!

It is exactly correct, it is made to look like that for some strange reason.

OCS only, whole screen is corrupted if ECS.

07 December 2013, 14:06	#424
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	Sinemania (Intro) by Latex A500 OCS/ECS (most common) ... something strange is happening here ... pic.1 !!! Snigelsaft (Demo) by Latex Hm, this is from 1999 so probably not for OCS or ECS ... but on 1200 AGA it works until part where it starts slow down - see pic.2 !!! p.s. This should probably be opened under AGA topic, but as such topic hasnt been opened yet, so I putting it here to not be forgotten !!! Attached Thumbnails Last edited by amilo3438; 07 December 2013 at 14:32.

08 December 2013, 16:55	#428
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	Just Another Compilation (Intro) by Magnetic Fields A500 OCS/ECS (most common) ... pic.1 (Note: It doesnt happens if CE=OFF) !!! Winter Conference '91 Report (Intro) by Magnetic Fields A500 OCS/ECS (most common) ... small glitches (pic.2) !!! (but doesnt if mem = 0.5 chip only!!!) Attached Thumbnails Last edited by amilo3438; 08 December 2013 at 17:49.

08 December 2013, 20:48	#430
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	Gastkammare (Demo) by Massive A500 OCS/ECS (most common) ... glitches on demo part -> see pic.1 (Note: It doesnt happens if CE=OFF) !!! Expiration (Demo) by Mayhem A500 OCS/ECS (most common) ... glitches -> see pic.2 (Note: On 2.6.1 it happens but looks differently, on 2.0.1 it didnt happens.) Paracetamol (Demo) by Mayhem A500 OCS/ECS (most common) ... something strange happens to pattern shown on pic.3 (Note: It last very short time.) !!! New Stuff (Demo) by Megapowers A500 OCS/ECS (most common) ... the lower scroller is shifted to left side -> pic.4 !!! (Note: With 512 chip only it doesnt happens!) Attached Thumbnails Last edited by amilo3438; 09 December 2013 at 15:24.

09 December 2013, 19:05	#433
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	Latest version I have is winuae.zip 2013-12-08 17:39 ... and that one is still on dl link! p.s. Maybe the newer version on which works is not updated on DL link! Last edited by amilo3438; 09 December 2013 at 19:14.

10 December 2013, 16:09	#436
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	We're doing the Charts (Intro) by Nebula A500 ECS (1mb chip) ... pic.1 !!! Copper Bandwaggon (Demo) by New Age Cant make it to run in any of QS A500 configurations !!! (Note: The demo is from 1990.) No Sleeping (40k Intro) by Offence A500 OCS/ECS (most common) ... glitches on part ... pic.2 !!! (Note: It doesnt glitches that part on A1200, but anyway it will need verifying on a real A500 to be sure.) Tiny Intro (Intro) by Orb A500 OCS/ECS (most common) ... some line appears ... pic.3 !!! Attached Thumbnails Last edited by amilo3438; 11 December 2013 at 18:45.

08 December 2013, 10:06	#427
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 48 Posts: 25,813	Most vertical copper bar glitches are now fixed. (not all, remaining are caused by real timing issues) It is time to wear brown paper bag again (it has been quite long since last time!). Blitter and bitplane DMA was emulated in separate passes during the time CPU was doing "nothing" (waiting for memory, doing internal calculations) which of course won't work that well if there are tiny blits started mid-scanline are blitter is really "racing the beam" (safety margin is only few clocks!) If blitter writes to same addresses that bitplane dma fetches in same scanline, blitted data was visible on screen, even if blitter writes should have happened after bitplane dma fetched them. (This is yet another performance optimization, used in non-ce modes) Note that this only caused visual glitches in some quite rare situations, it didn't have any effect on emulation timing or compatibility (from running program point of view of course). EDIT: It can increase CPU requirements in some demos, even if they didn't have any glitches. There is no way around it.

09 December 2013, 19:50	#434
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 48 Posts: 25,813	For some reason it was too old version, updated now. NOTE: compilation options changed, may cause unexpected side-effects.

11 December 2013, 21:07	#439
amilo3438 Amiga 500 User Join Date: Jun 2013 Location: EU Posts: 1,323	New Overgrowth Production (Intro) by Overgrowth A500 OCS/ECS (most common) ... not sure is that interlace mode or not ... pic.1 !!! ... it reminds a little on "COOL FRIDGE by UPFRONT" syncronize CPU to display" issue! Attached Thumbnails

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