NullDC Debugger

[Helder]

Does anyone have any experience getting this emulator's debugger to actually take breakpoints and have it cause a break? I tried adding one for Time Stalkers and it didn't cause any breaks or even acknowledge that it accepted the Breakpoint. Before anyone goes and ask if I inputted the RAM address correctly, I did by replacing the first 2 characters of the GS/CB code with 8C.

[Hacc]

I didn't find much for NullDC, but I did for MESS: http://www.assemblergames.com/forums...l=1#post590978

MakaronEX has a debugger, but all I've seen is complaining and "virus" posts about it.

[olala]

If am rembember corectly chankast have extended debuger, cheater tool with tha pink pigy as tha ico, otherwise makaron does.Dood

[Helder]

I didn't find much for NullDC, but I did for MESS: http://www.assemblergames.com/forums...l=1#post590978

MakaronEX has a debugger, but all I've seen is complaining and "virus" posts about it.

When I load an ISO in MESS it just freezes MESS or a Black screen and MakaronEX I use also and can't get it's debugger to do shit either as it lacks any info on how to set breakpoints.

[Hacc]

It looks like a lot of the Makaron development is posted on dknute's LJ. Your other options are asking in the Dreamcast sections of various emulation boards, or on AG (Assemblergames).

[Helder]

I'll ask Ozone on Assembler's since he got it going a bit.Thanks.

[Hacc]

That's good to hear.

[47iscool]

This is for nullDC 104 r136

Add this to Cheat Engine 6.3's cheat/code list, it's the PC register

"nullDC_Win32_Release-NoTrace.exe"+45018

For example, when Sonic gains or loses rings on SA2 I get this:

8C0523F6
Next step after getting hit> 8C0C0DBC

By the way, can someone tell me what the NOP value is for the SH4?

[Helder]

I don't get it, what do you input that as a cheat? there is an option for new cheat name and to insert an address. Could you post step by step instructions to set that up.

[47iscool]

I don't get it, what do you input that as a cheat? there is an option for new cheat name and to insert an address. Could you post step by step instructions to set that up.

I'm not quite sure I fully understand your question.

It's simple really, use Cheat Engine to find the value you want, such as ammo. Bring up CE's memory viewer with ctrl+B.

Find your ammo:


Set breakpoint:


Then fire:

Voila! The ASM!

Then you can test your code out by using a Gameshark on nullDC or a real Dreamcast. So far everything I've tried causes a freeze up so I'll probably back off of hacking the DC. Than again I may give it another shot who knows.

Also here is the CE file, it's for CE 6.4:

[Helder]

Ok so that register code will change to show the correct ASM when there is a Breakpoint?

[47iscool]

Ok so that register code will change to show the correct ASM when there is a Breakpoint?

Yes.

I tried NOP'ing that value (Ammo ASM) in the GameShark and right as I fired the gun and the screen went blank. For me this system isn't as easy to hack as the others are.

I'll explain:

Start up gameshark on nullDC (there are two versions of the GS that are patched to work without the official Gameshark memory card)

I added this in for Code Veronica in the codelist:

Test code
010FF18C
00000009

And when the gun was fired the screen went black.

[Helder]

Try Demul as I can't find any working codes using cheat engine but on Demul I can so try using that emulator.

[47iscool]

Did you tick this on CE?

[47iscool]

Demul, by the way is very slow on my PC