WHD and Save states.

Fenris · 19 February 2021, 21:07

Hi guys, just to confirm, as I understand as for today save states and WHD loads do not work together very well, right?
I'm mostly using a rpi 400 with Amibian or Pimiga, but the issue can be related to WinUAE as well.
Is there any workaround that I might not be aware of for saving WHD states?

Thank you.

jotd · 19 February 2021, 22:13

problem is: save states don't mix well with hard disk state.

But if you use PRELOAD and a lot of memory in your emulator (at least enough to preload the game fully) then it works.

Fenris · 20 February 2021, 09:57

Ok, thanks, could you point me to any link or specific infos about how to enable Preload please?

jotd · 20 February 2021, 10:16

PRELOAD is enabled in most cases. In .info of the slave, or in command line

Code:

whdload game.slave PRELOAD

Fenris · 20 February 2021, 10:46

Ok, great, thanks!

Toni Wilen · 20 February 2021, 18:27

Never use state files with HDFs because very quickly you run in situation where filesystem buffers inside statefile are out of sync with HDF data -> data corruption.

Directory filesystem should work fine, even without preload because there is no Amiga side buffers.

Fenris · 22 February 2021, 22:05

Cool, thanks Toni, I'll check that out.

Anubis · 24 February 2021, 16:15

On FS-UAE I just run into a problem with save state crashing due to HD being out of sync.

If you plan to use Save State, DO NOT make any in game 'saves', like score table update or 'save game' through save procedure. Use only save state and nothing else.

jotd · 24 February 2021, 16:42

Yes, good advice. So using user save directory as "ram:" can help (just in case a write triggers because of highscore save for instance)

twenty90seven · 25 February 2021, 12:57

The PUAE core on Retroarch seems to use save states fine...I am not getting that corruption that seems to happen in FS-UAE. I am using HDF files and WHDLOAD files.

malko · 25 February 2021, 13:30

@Fenris : https://eab.abime.net/showthread.php...te#post1315440

sonninnos · 25 February 2021, 22:18

Quote:

Originally Posted by twenty90seven

The PUAE core on Retroarch seems to use save states fine...I am not getting that corruption that seems to happen in FS-UAE. I am using HDF files and WHDLOAD files.

Precisely because it will not write anything to the game HDF, but uses "SavePath" to throw them to a different drive, which by default is in host filesystem mode, not HDF.

Games in LHA form is even more fool proof than that, since they are read only. (Though there are some few slaves that will not obey SavePath, and will fail if it can't write to the game dir.)

And in some cases in-game saves happen without user decision, so simply not using them is not really an option..

19 February 2021, 21:07	#1
Fenris Registered User Join Date: Feb 2020 Location: Somwhere close Posts: 100	WHD and Save states. Hi guys, just to confirm, as I understand as for today save states and WHD loads do not work together very well, right? I'm mostly using a rpi 400 with Amibian or Pimiga, but the issue can be related to WinUAE as well. Is there any workaround that I might not be aware of for saving WHD states? Thank you.

20 February 2021, 10:16	#4
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,160	PRELOAD is enabled in most cases. In .info of the slave, or in command line Code: whdload game.slave PRELOAD

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19 February 2021, 22:13	#2
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,160	problem is: save states don't mix well with hard disk state. But if you use PRELOAD and a lot of memory in your emulator (at least enough to preload the game fully) then it works.

20 February 2021, 09:57	#3
Fenris Registered User Join Date: Feb 2020 Location: Somwhere close Posts: 100	Ok, thanks, could you point me to any link or specific infos about how to enable Preload please?

20 February 2021, 10:46	#5
Fenris Registered User Join Date: Feb 2020 Location: Somwhere close Posts: 100	Ok, great, thanks!

20 February 2021, 18:27	#6
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	Never use state files with HDFs because very quickly you run in situation where filesystem buffers inside statefile are out of sync with HDF data -> data corruption. Directory filesystem should work fine, even without preload because there is no Amiga side buffers.

22 February 2021, 22:05	#7
Fenris Registered User Join Date: Feb 2020 Location: Somwhere close Posts: 100	Cool, thanks Toni, I'll check that out.

24 February 2021, 16:15	#8
Anubis Retro Gamer Join Date: Jan 2005 Location: Underworld Age: 51 Posts: 4,058	On FS-UAE I just run into a problem with save state crashing due to HD being out of sync. If you plan to use Save State, DO NOT make any in game 'saves', like score table update or 'save game' through save procedure. Use only save state and nothing else.

24 February 2021, 16:42	#9
jotd This cat is no more Join Date: Dec 2004 Location: FRANCE Age: 52 Posts: 8,160	Yes, good advice. So using user save directory as "ram:" can help (just in case a write triggers because of highscore save for instance)

25 February 2021, 12:57	#10
twenty90seven twenty90seven Join Date: Jun 2012 Location: Brisbane, Australia Posts: 196	The PUAE core on Retroarch seems to use save states fine...I am not getting that corruption that seems to happen in FS-UAE. I am using HDF files and WHDLOAD files.

25 February 2021, 13:30	#11
malko Ex nihilo nihil Join Date: Oct 2017 Location: CH Posts: 4,856	@Fenris : https://eab.abime.net/showthread.php...te#post1315440

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