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Emulator graphics 'Acid Test' [message #348034] Tue, 11 July 2017 21:58 Go to next message
anthonypaulo is currently offline  anthonypaulo
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Registered: September 2013
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What is considered the definitive graphics 'Acid Test' for Apple IIe and/or IIgs emulators, and are there any emulators out there that can pass them? Also, I read of problems emulating the IIgs... what makes the IIgs in particular so inherently hard to emulate versus the other Apple IIs?
Re: Emulator graphics 'Acid Test' [message #348047 is a reply to message #348034] Wed, 12 July 2017 01:06 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: John Brooks

On Tuesday, July 11, 2017 at 6:58:40 PM UTC-7, Anthony Ortiz wrote:
> What is considered the definitive graphics 'Acid Test' for Apple IIe and/or IIgs emulators, and are there any emulators out there that can pass them? Also, I read of problems emulating the IIgs... what makes the IIgs in particular so inherently hard to emulate versus the other Apple IIs?

I don't know of an Acid Test, but the IIGS is a much more complicated machine to emulate than the other Apple II computers:

1) VGC: Super Hi-Res has complex timing, memory layout, and video modes

2) Sound: Ensoniq is it's own 32-channel processor which is fairly complex

3) Disk: the IWM is much more complex than the DiskII controller

4) 3.5": Sony 3.5" drive contains a 'smart' controller which emulators don't handle

5) The keyboard contains it's own smart, programmable microcontroller

6) Serial: Zilog Z8530 is it's own dual-channel state machine which is fairly complex

7) There are many sources of interrupts which have complex timing and interactions

8) The 65816 CPU has about 10x the complexity of the 6502 (more opcodes & modes)

9) The memory system is way more complex with fast mem, slow mem, DRAM referesh stalls, 4x language cards located in banks $00,$01,$E0,$E1, memory shadowing, plus all the //e aux memory stuff

-JB
@JBrooksBSI
Emulator graphics 'Acid Test' [message #348074 is a reply to message #348034] Wed, 12 July 2017 10:44 Go to previous messageGo to next message
Michael AppleWin Debu is currently offline  Michael AppleWin Debu
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Anything that changes video mode **mid** scanline.

Ansi Story, end credits, side 2
ftp://ftp.apple.asimov.net/pub/apple_II/images/demos/ANSI%20 Story-S1.dsk
ftp://ftp.apple.asimov.net/pub/apple_II/images/demos/ANSI%20 Story-S2.dsk

Emulators Results:

AppleWin 1.26+ -- 5/5
Jace -- 4/5 byte between TEXT and DGR isn't correct
Virtual [] -- 0/5

There are probably others, so this isn't a _definitive_ answer, but it is the one we used to make sure we had pixel perfect cycle counting in AppleWin.
Re: Emulator graphics 'Acid Test' [message #348075 is a reply to message #348074] Wed, 12 July 2017 11:57 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
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On Wednesday, July 12, 2017 at 10:44:09 AM UTC-4, Michael AppleWin Debugger Dev wrote:
> Anything that changes video mode **mid** scanline.
>
> Ansi Story, end credits, side 2
> ftp://ftp.apple.asimov.net/pub/apple_II/images/demos/ANSI%20 Story-S1.dsk
> ftp://ftp.apple.asimov.net/pub/apple_II/images/demos/ANSI%20 Story-S2.dsk
>
> Emulators Results:
>
> AppleWin 1.26+ -- 5/5
> Jace -- 4/5 byte between TEXT and DGR isn't correct
> Virtual [] -- 0/5
>
> There are probably others, so this isn't a _definitive_ answer, but it is the one we used to make sure we had pixel perfect cycle counting in AppleWin.

I was looking at "French Touch"'s youtube page and found a bunch of other demos such as "Scroll Scroll Scroll", "Crazy Cycles" I and II and "Pure Noise". Are the top emulators capable of running these demos perfectly? I read somewhere that OpenEmulator was closest in fidelity.
Re: Emulator graphics 'Acid Test' [message #348076 is a reply to message #348075] Wed, 12 July 2017 12:10 Go to previous messageGo to next message
Michael AppleWin Debu is currently offline  Michael AppleWin Debu
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On Wednesday, July 12, 2017 at 8:57:05 AM UTC-7, Anthony Ortiz wrote:
> I was looking at "French Touch"'s youtube page and found a bunch of other demos such as "Scroll Scroll Scroll", "Crazy Cycles" I and II and "Pure Noise".

I haven't checked those out -- so I don't know how hard they push the machine.

> Are the top emulators capable of running these demos perfectly?

Define "top" ? Do you mean the most popular? Most accurate?

> I read somewhere that OpenEmulator was closest in fidelity.

I don't know about OE since I haven't used it but I do know that at one time AppleWin was the only emulator to successfully run ANSI Story. i.e. French Touch mentioned that NO emulator was able to run their demos -- we took that as a (constructive) challenge and design goal in AppleWin 1.26.

I haven't looked into other emulators ability to 100% accurately run their demos. It would be great if someone, such as yourself, tabulated the "current state of the union 2017".
i.e. Apple 2 Emulators along the vertical axis vs Demo Programs along the horizontal axis. :-)
Re: Emulator graphics 'Acid Test' [message #348077 is a reply to message #348076] Wed, 12 July 2017 12:29 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
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>> Are the top emulators capable of running these demos perfectly?
>
> Define "top" ? Do you mean the most popular? Most accurate?
>

Either one as I would imagine there are less than a handful of "top" emulators regardless of criteria; AppleWin is obviously in the "top" category.

I'd love to see such a state-of-the-union so I don't mind volunteering, I just need to find the dsk files for those demos and give them a whirl. One thing I didn't find, however, was an x8 version of OpenEmulator... I saw an old repository of an intel port that hadn't been touched in years so I'd appreciate a link to a recent version if anyone has one.
Re: Emulator graphics 'Acid Test' [message #348096 is a reply to message #348077] Wed, 12 July 2017 12:32 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
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> One thing I didn't find, however, was an x8 version of OpenEmulator...

I meant x86, not x8
Re: Emulator graphics 'Acid Test' [message #348139 is a reply to message #348077] Wed, 12 July 2017 21:23 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: James Davis

On Wednesday, July 12, 2017 at 9:29:19 AM UTC-7, Anthony Ortiz wrote:
>>> Are the top emulators capable of running these demos perfectly?
>>
>> Define "top" ? Do you mean the most popular? Most accurate?
>>
>
> Either one as I would imagine there are less than a handful of "top" emulators regardless of criteria; AppleWin is obviously in the "top" category.
>
> I'd love to see such a state-of-the-union so I don't mind volunteering, I just need to find the dsk files for those demos and give them a whirl. One thing I didn't find, however, was an x8 version of OpenEmulator... I saw an old repository of an intel port that hadn't been touched in years so I'd appreciate a link to a recent version if anyone has one.

More that one:

.. == ftp://public.asimov.net/pub/apple_II

../emulators
../emulators/2_in_a_mac
../emulators/2_in_a_mac/][_in_a_mac.gz
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../emulators/apple_2_for_windows/apl24wn.zip
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../emulators/rom_images/APPLE_IIe_ROM_KRK1.zip
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../emulators/rom_images/Mac ROMs.zip
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../emulators/rom_images/videx/Videx Videoterm Character ROM Super and Subscript.bin
../emulators/rom_images/videx/Videx Videoterm Character ROM Inverse.bin
../emulators/rom_images/videx/Videx Videoterm Character ROM Normal Uppercase..bin
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../emulators/rom_images/videx/Videx Videoterm Character ROM Normal.bin
../emulators/rom_images/videx/Videx UltraTerm ROM - Unverified v2.bin
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../emulators/rom_images/videx/Videx Videoterm Character ROM Spanish.bin
../emulators/rom_images/videx/Videx Videoterm Character ROM Katakana.bin
../emulators/rom_images/videx/Videx Videoterm Character ROM APL.bin
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../emulators/misc/Sweet16_3.0.3.zip
../emulators/misc/Apple II in Apple II GS emulation.zip
../emulators/misc/AppleEmulator-An Apple ][, ][+, ][e, ][c emulator.zip
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../emulators/misc/GSport-cross_platform Apple II GS emulator.zip
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../emulators/misc/IDEfile- A LISA ProFile Emulator.zip
../emulators/misc/linapple-1.0b.tar.bz2
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Re: Emulator graphics 'Acid Test' [message #348140 is a reply to message #348034] Wed, 12 July 2017 21:31 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
Messages: 531
Registered: September 2013
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Senior Member
:O
Re: Emulator graphics 'Acid Test' [message #348141 is a reply to message #348077] Wed, 12 July 2017 21:32 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: James Davis

On Wednesday, July 12, 2017 at 9:29:19 AM UTC-7, Anthony Ortiz wrote:
>>> Are the top emulators capable of running these demos perfectly?
>>
>> Define "top" ? Do you mean the most popular? Most accurate?
>>
>
> Either one as I would imagine there are less than a handful of "top" emulators regardless of criteria; AppleWin is obviously in the "top" category.
>
> I'd love to see such a state-of-the-union so I don't mind volunteering, I just need to find the dsk files for those demos and give them a whirl. One thing I didn't find, however, was an x8 version of OpenEmulator... I saw an old repository of an intel port that hadn't been touched in years so I'd appreciate a link to a recent version if anyone has one.

ftp://public.asimov.net/pub/apple_II/emulators/
Re: Emulator graphics 'Acid Test' [message #348159 is a reply to message #348077] Thu, 13 July 2017 02:02 Go to previous messageGo to next message
Tom Greene is currently offline  Tom Greene
Messages: 20
Registered: January 2013
Karma: 0
Junior Member
On Wednesday, July 12, 2017 at 12:29:19 PM UTC-4, Anthony Ortiz wrote:
>>> Are the top emulators capable of running these demos perfectly?
>>
>> Define "top" ? Do you mean the most popular? Most accurate?
>>
>
> Either one as I would imagine there are less than a handful of "top" emulators regardless of criteria; AppleWin is obviously in the "top" category.
>
> I'd love to see such a state-of-the-union so I don't mind volunteering, I just need to find the dsk files for those demos and give them a whirl. One thing I didn't find, however, was an x8 version of OpenEmulator... I saw an old repository of an intel port that hadn't been touched in years so I'd appreciate a link to a recent version if anyone has one.


There's an OpenEmulator package built by 4am.

https://archive.org/details/OpenEmulatorSnapshots

Tom
Re: Emulator graphics 'Acid Test' [message #348185 is a reply to message #348159] Thu, 13 July 2017 09:32 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
Messages: 531
Registered: September 2013
Karma: 0
Senior Member
On Thursday, July 13, 2017 at 2:02:57 AM UTC-4, Tom Greene wrote:
> On Wednesday, July 12, 2017 at 12:29:19 PM UTC-4, Anthony Ortiz wrote:
>>>> Are the top emulators capable of running these demos perfectly?
>>>
>>> Define "top" ? Do you mean the most popular? Most accurate?
>>>
>>
>> Either one as I would imagine there are less than a handful of "top" emulators regardless of criteria; AppleWin is obviously in the "top" category..
>>
>> I'd love to see such a state-of-the-union so I don't mind volunteering, I just need to find the dsk files for those demos and give them a whirl. One thing I didn't find, however, was an x8 version of OpenEmulator... I saw an old repository of an intel port that hadn't been touched in years so I'd appreciate a link to a recent version if anyone has one.
>
>
> There's an OpenEmulator package built by 4am.
>
> https://archive.org/details/OpenEmulatorSnapshots
>
> Tom

It's Mac, not x86. :(
Re: Emulator graphics 'Acid Test' [message #348220 is a reply to message #348185] Thu, 13 July 2017 12:38 Go to previous messageGo to next message
qkumba is currently offline  qkumba
Messages: 1584
Registered: March 2013
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Senior Member
There is currently no version of OpenEmulator for other than Mac OSX.
However, the source is available, you could be the one to fix that! :-)
Re: Emulator graphics 'Acid Test' [message #348221 is a reply to message #348220] Thu, 13 July 2017 13:17 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
Messages: 531
Registered: September 2013
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On Thursday, July 13, 2017 at 12:38:07 PM UTC-4, Peter Ferrie wrote:
> There is currently no version of OpenEmulator for other than Mac OSX.
> However, the source is available, you could be the one to fix that! :-)

But there's a Mac emulator, aha! So I'll run OpenEmulator within the Mac emulator and presto! Down, down, down, into the rabbit hole we go! :P
Re: Emulator graphics 'Acid Test' [message #348346 is a reply to message #348220] Fri, 14 July 2017 10:16 Go to previous messageGo to next message
zellyn is currently offline  zellyn
Messages: 173
Registered: April 2013
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Senior Member
On Thursday, July 13, 2017 at 12:38:07 PM UTC-4, Peter Ferrie wrote:
> There is currently no version of OpenEmulator for other than Mac OSX.
> However, the source is available, you could be the one to fix that! :-)

OpenEmulator is written with a fairly small OS-specific graphics/sound/UI layer, and a large generic C++ emulation layer. Porting it to other OSes should be fairly straightforward, for someone familiar with writing GUI apps.

Zellyn
Re: Emulator graphics 'Acid Test' [message #348765 is a reply to message #348076] Wed, 19 July 2017 10:53 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
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Registered: September 2013
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Senior Member
Okay, so I went to the French Touch web page and downloaded all their demos and ran them one by one through the only Apple II emulator I've ever had the pleasure of using : AppleWin. I was surprised to see that many ran without issue, including "Scroll Scroll Scroll" which I thought for sure would not work. Very nice work AppleWin guys!

There were some hiccups though as some of the demos had issues but as I was just leisurely browsing through all the demos I wasn't keeping track of what worked and what didn't; I'll post a list later on. For the most part the issues were related to speed (or lack thereof). For example, some seemed to freeze a few seconds into the demo but for some reason if I press the ALT key it would suddenly play everything really fast, as if I was fast forwarding through the demo and it would almost instantly reach the end of the demo. In another demo with a dancing silhouette (Ibizza I think?) it had the opposite problem, the speed was running superfast all by itself. There was a demo or two that had some minor visual artifacts but still managed to pull it off.

These seem to be minor bugs that can be easily patched so kudos to the AppleWin guys for nailing vaporlock!
Re: Emulator graphics 'Acid Test' [message #348766 is a reply to message #348765] Wed, 19 July 2017 11:02 Go to previous messageGo to next message
anthonypaulo is currently offline  anthonypaulo
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Registered: September 2013
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Senior Member
I should add that I'm also deeply impressed with French Touch's skills and ability to do these amazing things on the Apple II that I've never seen before nor imagined was possible. If you guys are reading this, kudos to you French Touch!
Re: Emulator graphics 'Acid Test' [message #348825 is a reply to message #348034] Thu, 20 July 2017 08:48 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: yewsiedu

The Octalyzer fails miserably for obvious reasons (our video renderer is an independent parallel task and changing the graphics mode is quite laggy so scanline level graphics hacks just aren't going to work!)

C'est la vie.

On Wednesday, July 12, 2017 at 11:58:40 AM UTC+10, Anthony Ortiz wrote:
> What is considered the definitive graphics 'Acid Test' for Apple IIe and/or IIgs emulators, and are there any emulators out there that can pass them? Also, I read of problems emulating the IIgs... what makes the IIgs in particular so inherently hard to emulate versus the other Apple IIs?
Re: Emulator graphics 'Acid Test' [message #348836 is a reply to message #348765] Thu, 20 July 2017 13:17 Go to previous messageGo to next message
zellyn is currently offline  zellyn
Messages: 173
Registered: April 2013
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Senior Member
On Wednesday, July 19, 2017 at 10:53:27 AM UTC-4, Anthony Ortiz wrote:
> Okay, so I went to the French Touch web page and downloaded all their demos and ran them one by one through the only Apple II emulator I've ever had the pleasure of using : AppleWin. I was surprised to see that many ran without issue, including "Scroll Scroll Scroll" which I thought for sure would not work. Very nice work AppleWin guys!

My goal is for OpenEmulator to run all French Touch demos flawlessly, but I'm a bit burned out on OpenEmulator work at the moment. I *also* want to add graphics tests to zellyn.com/a2audit for each piece of French Touch functionality that emulators get wrong, with helpful diagnostics. The goal for a2audit, as always, is for emulator authors to go from zero to state-of-the-art Apple II emulation just by fixing a2audit errors until none remain :-)

Zellyn
Re: Emulator graphics 'Acid Test' [message #348969 is a reply to message #348765] Sat, 22 July 2017 05:08 Go to previous message
TomCh is currently offline  TomCh
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On Wednesday, July 19, 2017 at 3:53:27 PM UTC+1, Anthony Ortiz wrote:
> Okay, so I went to the French Touch web page and downloaded all their demos and ran them one by one through the only Apple II emulator I've ever had the pleasure of using : AppleWin. I was surprised to see that many ran without issue, including "Scroll Scroll Scroll" which I thought for sure would not work. Very nice work AppleWin guys!
>
> There were some hiccups though as some of the demos had issues but as I was just leisurely browsing through all the demos I wasn't keeping track of what worked and what didn't; I'll post a list later on. For the most part the issues were related to speed (or lack thereof). For example, some seemed to freeze a few seconds into the demo but for some reason if I press the ALT key it would suddenly play everything really fast, as if I was fast forwarding through the demo and it would almost instantly reach the end of the demo. In another demo with a dancing silhouette (Ibizza I think?) it had the opposite problem, the speed was running superfast all by itself. There was a demo or two that had some minor visual artifacts but still managed to pull it off.
>
> These seem to be minor bugs that can be easily patched so kudos to the AppleWin guys for nailing vaporlock!

If you can retry and then list the issues that you see with AppleWin then I'll be happy to raise bugs & investigate them.

The Ibiza demo streams dlores images from the disk. AppleWin's default disk emulation is "Enhanced Speed", which means that when the drive motor is on, then emulation will run in unthrottled (ie. full-speed) mode. Hence the superfast speed you saw.

Just go to "Config(F8) -> Disk" and select "Authentic Speed" to have the demo run at the correct speed. NB. Apart from this demo (and perhaps a drive diagnostics test) there's never any need to select "Authentic Speed".

re. "There was a demo or two that had some minor visual artifacts but still managed to pull it off."

As I said, if you can list & describe these, then this will be very helpful for us.

Cheers,
Tom
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