Graphics bug

Hito · Post by **Hito** » Mon Oct 11, 2004 9:15 pm

In the last WIP (September 20, windows port) I've found that if you run a DSP1 game (ie super mario kart) and after that without closing zsnes you run chrono trigger, when you are about to start a battle the game takes fuzzy and becomes unplayable because you can't see anything.
I don't know if this bug occurs in other roms too.

PD: sorry about my english, I'm spanish and I'm not very well speaking english

I hope you can understand me

snkcube · Post by **snkcube** » Tue Oct 12, 2004 12:02 am

Wow, this does happen.

Edit - Here's a pic.

blackmyst · Post by **blackmyst** » Tue Oct 12, 2004 6:43 am

Seconded.

Post by **Nach** » Tue Oct 12, 2004 10:40 am

It's because the DSP-1 code is never unloaded.

We knew about this for quite a while, yet never did anything about it.

Post by **grinvader** » Tue Oct 12, 2004 10:54 am

It's even funnier to load Megaman X3 after a DSP game. :þ
Run the test by pressing 'b' on the 2P pad as you launch the game.

Post by **Nach** » Tue Oct 12, 2004 11:05 am

Weird, I was trying all combinations of MMX 2 and 3, and Pilotwings and Mario Kart.

Only the MMX3 and Pilotwings combo did it.

Post by **Nach** » Tue Oct 12, 2004 11:20 am

I just gave a quick look at the source, and was compelled to add a single line.

Now I can't get MMX3 to mess up a test after PWings, and fighting Gato in CT seemed fine. grinvader: can you verify?

Since public CVS probably won't have the code for a while yet...

Code: Select all

Index: init.asm
===================================================================
RCS file: /cvsroot/zsnes/zsnes/src/init.asm,v
retrieving revision 1.288
retrieving revision 1.289
diff -r1.288 -r1.289
4595a4596
>     mov byte[DSP1Type],0

Post by **grinvader** » Tue Oct 12, 2004 3:57 pm

No shit, just that ?!

I'm on it...

Edit: ok, tested some other games too.
Seems like a perfect fix. Congrats.

Post by **Nach** » Tue Oct 12, 2004 4:09 pm

Thanks. Interesting how simple some things can be despite sounding all complex and vica versa.

Post by **grinvader** » Tue Oct 12, 2004 4:11 pm

Yeepee !

zsnes_genuine_bugs--; // pure awes0meness

snkcube · Post by **snkcube** » Wed Oct 13, 2004 12:08 am

Whoopee.

kieran_ · Post by **kieran_** » Wed Oct 13, 2004 10:22 am

It's refreshing to have a bug report that is actually an emulator bug, instead of a driver issue, stupidity etc...

LDAWG · Post by **LDAWG** » Wed Oct 13, 2004 5:13 pm

I made a post about this in the previous forum with screenshots and everything.
Why did they have to get hacked?

I explained how it happened after loading certain games.
It was like a year ago...

Any of you guys remember these babies?

Post by **Nach** » Wed Oct 13, 2004 5:35 pm

If it's only after loading certain games, please explain exactly the procedure for me to replicare it. If it always happens, well, that's not my department.

LDAWG · Post by **LDAWG** » Wed Oct 13, 2004 5:49 pm

It's pretty much DSP-1 games, mostly Pilot Wings.
I don't remember.
I'll try to re-test and re-figure it out, when I have more time.

Esturk · Post by **Esturk** » Wed Oct 13, 2004 6:54 pm

Similar thing happens after playing Dungeon Master.

Post by **Nach** » Wed Oct 13, 2004 8:46 pm

I can't seem to replicate the bug after any DSP-1 or 2 game.

While testing SSF2 for this and the remember high score thing, I forgot how much I used to love this game.

Anyways, despite my rustiness, I made a video that could give lessons to M. Bison and Mario how to really stomp on someone's head: http://nsrt.edgeemu.com/chunli.zip

US version, let me know if it works for you guys.
CVS users, does it work for you?

Murdock · Post by **Murdock** » Thu Oct 14, 2004 9:07 am

I hate to be the idiot, but...

Wouldn't it just be easier to have zsnes exit and then restart it's self before loading a rom to prevent these strange bugs? Since I use MAMEWAH as a frontend instead of zsnes' GUI I don't experience those bugs simply because zsnes is reloaded everytime i select a new rom.

illegal eagle · Post by **illegal eagle** » Thu Oct 14, 2004 12:36 pm

Clearing the allocated memory is much easier to program than a restart, IMO. You'd probably need an external program for that, which doesn't sound very appealing.

Post by **Nach** » Thu Oct 14, 2004 12:44 pm

illegal eagle wrote:Clearing the allocated memory is much easier to program than a restart, IMO. You'd probably need an external program for that, which doesn't sound very appealing.

It's a single line of C to restart.

And this has nothing to do with memory being allocated.

illegal eagle · Post by **illegal eagle** » Thu Oct 14, 2004 12:46 pm

Really? Sorry, misunderstood it then.

Hexlord · Post by **Hexlord** » Fri Oct 15, 2004 5:06 am

Hmm the bug with SSF2 always happen after a round of Mario Kart..

Post by **Nach** » Fri Oct 15, 2004 8:50 am

Hexlord wrote:Hmm the bug with SSF2 always happen after a round of Mario Kart..

Not anymore it don't.

Post by **grinvader** » Sun Oct 17, 2004 9:17 pm

Nach wrote:
Hexlord wrote:Hmm the bug with SSF2 always happen after a round of Mario Kart..
Not anymore it don't.

OMFG MY EYES HAVE EXPLODED

Post by **Nach** » Sun Oct 17, 2004 9:31 pm

grinvader wrote:
Nach wrote:
Hexlord wrote:Hmm the bug with SSF2 always happen after a round of Mario Kart..
Not anymore it don't.
OMFG MY EYES HAVE EXPLODED

I thought you tested this last week already?

ZSNES board

Graphics bug

Graphics bug

Just my humble opinion?