[WORKAROUND] srally2, NVRAM and corrupted graphic

[addamm]

Playing srally2 after it creates its NVRAM file, always leads to corrupted graphics.
See screenshot:



Steps to reproduce:

1_ open srally2.zip with non-existent srally2.nv
2_ emulation begins
3_ wait until cars appear in the intro video
4_ insert coins
5_ play
6_ close emulator's window with "X" or by pressing ESC on the keyboard
7_ open srally2.zip (this time srally.nv has been just created)
8_ emulation start directly to gametype selection (intro video is skipped)
9_ corrupted graphics

Emulation works good only if started without its srally2.nv

[Bart]

The underlying cause of this has never been investigated. Clearly, the game is skipping some initialization step when it detects unused coins. One of many things I would love to investigate given unlimited time but probably never will. Anyone willing to slog through PowerPC assembly language and familiar with C++ is welcome to ping me for suggestions of how to proceed investigating this issue

The game will boot with an NVRAM file, I think. Just make sure there are no unused credits. Try inserting only one coin, playing a game, then exiting.

[addamm]

inserting only one coin, playing a game, then exiting.

It works, thanks Bart!

[Ian]

I had a quick look at this
the data is filled with zeros for the viewport, ie no data
Could be an actual game bug, as apposed to an emulation bug.

[zuppa_di_pesce]

Same problem here. Has it been resolved?

[MrThunderwing]

Same problem here. Has it been resolved?

Maybe you should re-read the thread...

[zuppa_di_pesce]

Same problem here. Has it been resolved?

Maybe you should re-read the thread...

I had a quick look at this
the data is filled with zeros for the viewport, ie no data
Could be an actual game bug, as apposed to an emulation bug.

Sorry!

[MrThunderwing]

Ha, no, as in I meant Bart had posted a solution already. Only use one credit at a time, don't exit the game with credits in the system. Also, don't credit up before the attract mode starts.

inserting only one coin, playing a game, then exiting.

It works, thanks Bart!

[zuppa_di_pesce]

inserting only one coin, playing a game, then exiting.

It works, thanks Bart!

Another workaround is to configure coins as FREE PLAY inside TEST menu.

[francko76]

which other game has this NV problem?

Star Wars, Sega Rally, and...?