Add "safe fast load" option

[tomconte]

Could you add a third option for the speed settings like the example in the first post of #62 ? So like this -

Safe Acceleration

settings_current.fastload = 1; settings_current.accelerate_loader = 0; settings_current.tape_traps = 0; settings_current.slt_traps = 1;

The reason being because some games fail to load when using the full acceleration. This is safe and a lot faster than original speed.

[snoofly]

some games fail to load even with no fast options but this is a problem with fuse itself not the libretro port. chuckle egg 2 tzx comes to mind. dan dare, splatter, mask, gauntlet 2 etc there’s a bunch of them fixing some by one method breaks others and vice versa, not sure a generic fix has been found yet the z80 has to be used

[zzedmore]

I just tried the TZX of Chuckie Egg 2 and Dan Dare and they load fine.

Gauntlet 2 TAP version works.

There is a polarity fixed TZX of MASK posted in the FUSE Sourceforge issues.

No need for Z80's 😄 (MASK and Gauntlet 2 are multiload anyway unless you use the All-in-One versions).

[snoofly]

On Sat, 1 May 2021 at 10:44, zzedmore @.***> wrote:

I just tried the TZX of Chuckie Egg 2 and Dan Dare and they load fine.

Gauntlet 2 TZX works if you use this Safe Load method in the first post.

There is a polarity fixed TZX of MASK posted in the FUSE Sourceforge issues.

— You are receiving this because you commented.

Reply to this email directly, view it on GitHub https://github.com/libretro/fuse-libretro/issues/94#issuecomment-830597410, or unsubscribe https://github.com/notifications/unsubscribe-auth/AG56EZOHJS5P2OYW24KXRATTLPEPLANCNFSM42XT2KDQ .

With chuckle egg 2 did you try playing the game? I once did get it to load but it crashes shortly in. What is the md5 of the tzx you used? I made the fast option equate to these safer settings in an adhoc build and it’s pretty good. Cheers for the info.

[zzedmore]

I used the first TZX of Chuckie 2 from spectrumcomputing. Seems to work.

[snoofly]

Odd can’t get it to load, just resets. Which platform are you using? i’m on Switch.

[zzedmore]

Yeah this is weird. I recently just updated FUSE and the Core info files on Windows and now I can't load anything !? It just crashes Retroarch.

[zzedmore]

I found a bug with the machine type, that's why I couldn't load anything. It seems to be having trouble when set to Scorpion.

Anyway, there are 3 files available for Chuckie Egg 2 on spectrumcomputing.co.uk. The first is a TAP file, the second is a TZX (the middle one of the 3 files). This one works.

[tomconte]

I just tested the "safe fast load" settings described above, with Chuckie Egg 2 TZX from spectrumcomputing.co.uk (actually pointing to World of Spectrum June 2017 Mirror on archive.org; size 49177, sha1 6354cdef91c18508a9bce87d96f532e14eb8954d).

• In "fast" mode it runs fine.
• In "safe" mode it seems to load but then exits back to the BASIC prompt...
• In "slow" mode it also fails to run, in the same way as in "safe" mode.

Not sure what to make of it really!

[zzedmore]

Yeah, maybe this safeload isn't that useful after all ! I only mentioned it because it's available in the Android emulator 'Spectacol' which also uses FUSE. https://github.com/bog-dan-ro/spectacol

[zzedmore]

May as well close this one.

[snoofly]

Thanks for your research. My test agrees with yours that full fast mode is the only way to load egg2 so agree there is no safe fast mode in general. I think it all goes back to the discussion in the sourceforge fuse forum on how certain tape statuses are handled and affect loading of certain games - perhaps if we get a generic fix for that we’ll see it merged to the libretro fuse code base.

[tomconte]

Links to fuse issues for reference:

• https://sourceforge.net/p/fuse-emulator/bugs/480/
• https://sourceforge.net/p/fuse-emulator/bugs/481/
• https://sourceforge.net/p/fuse-emulator/bugs/392/

And a few others... Let's revisit once the topic has progressed on the Fuse side...