Code Porting Help

[1337gamer]

Hello, i am currently in the process of porting the ultimate levitation code for driver 2 to driver 2 v1.1. I am almost finished with the code. I am down to the top 4 lines of the code. I cannot seem to get control over the levitation effect no matter how i port the top 4 lines of the original code. Any help would be appreciated.

[dlevere]

http://web.archive.org/web/200705050..._formulas.html

[1337gamer]

Thanks, but that didn't help at all.

[Hacc]

What region of the game do you have? Because I ported it to v1.1 for the NTSC version a long time ago. To port the first four lines of code in the beginning requires both files for the game. The guide, dlevere, linked you to does work. It's just that some codes require both versions of the game to get an accurate port of the code.

[1337gamer]

I have v1.1 NTSC and i didn't know you ported it.

[Hacc]

OK. I posted the code on Codemasters-Project in my code thread (deleted; but will be re-posted in due time) and on the old Codebreaker forums. I wasn't registered here at the time to post it. Here is the code:

Credit to the original hacker (probably CodeMaster aka CMX' doing)

Ultimate Levitation Code
D0056B74 1903
80056B7C 1D80
D0056B74 1903
80056B7E 0C00
80007600 FFFF
80007602 2403
80007604 000B
80007606 3C01
80007608 ABAC
8000760A 8C21
8000760C 0004
8000760E 8CC2
80007610 000C
80007612 3021
80007614 000C
80007616 2404
80007618 000D
8000761A 1020
8000761E 2400
80007620 0007
80007622 1024
80007624 0008
80007626 3024
80007628 0003
8000762A 1480
8000762C 5026
8000762E 0069
80007630 0007
80007632 1540
80007634 0001
80007636 340A
80007638 0005
8000763A 1140
8000763E 2400
80007640 0002
80007642 1069
80007644 0300
80007646 2442
80007648 0300
8000764A 2442
8000764C 0004
8000764E ACC2
80007650 0008
80007652 03E0
80007656 2400
Note: This code is fun. Press L1 and your car levitates. Press R1 and all cars except yours levitates. Press L1+R1 and every car levitates. Very good fun.

[1337gamer]

Thanks hacc. Also, please ignore the private message i sent you at the CM forum.

Also, i tried the code on my actual console and it locks up on infogrames video and i can hear audio from the other videos in the game playing. The code works just fine on an emulator

[Mezmorize]

The code above didn't work correctly for me with pSX and CodeBreaker.

I'm pretty sure that I indeed have version 1.1 because I used Hacc's Greatest Hits code (Display Coordinates) and it worked correctly.

The very first line of the code (and the 3rd) hold that value as soon as you load the game, so they are kinda pointless I would think.

Here's the code working great for me: (Red=Changes)

Ultimate Levitation Code
[COLOR="Red"]D00D93D4 0900		1[/COLOR]
80056B7C 1D80		2
[COLOR="Red"]D00D93D4 0900		3[/COLOR]
80056B7E 0C00		4
80007600 FFFF		5
80007602 2403		6
80007604 000B		7
80007606 3C01		8
80007608 ABAC		9
8000760A 8C21		10
8000760C 0004		11
8000760E 8CC2		12
80007610 000C		13
80007612 3021		14
80007614 000C		15
80007616 2404		16
80007618 000D		17
8000761A 1020		18
8000761E 2400		19
80007620 0007		20
80007622 1024		21
80007624 0008		22
80007626 3024		23
80007628 0003		24
8000762A 1480		25
8000762C 5026		26
8000762E 0069		27
80007630 0007		28
80007632 1540		29
80007634 0001		30
80007636 340A		31
80007638 0005		32
8000763A 1140		33
8000763E 2400		34
80007640 0002		35
80007642 1069		36
80007644 0300		37
80007646 2442		38
80007648 0300		39
8000764A 2442		40
8000764C 0004		41
8000764E ACC2 		42
80007650 0008		43
80007652 03E0		44
80007656 2400		45
Note: This code is fun. Press L1 and your car levitates. Press R1 and all cars except yours levitates. Press L1+R1 and every car levitates. Very good fun.

With the red activator edit above, Press Select+Start to make the L1 and R1 buttons function as stated above.

[Hacc]

Those checks are used as a precaution if the game uses Dynamic Memory Allocation (which it does for the player data). I could have omitted them, but I kept them as a reference to the ported code. The code works fine for me on the console.

[1337gamer]

They don't work on the console for me.

Edit: Well i'll be damned. Mez's modification to the levitation code and Code breaker v.3 works on my actual console.

Edit 2: Strangely enough, when i removed the top four lines of the code, the game loads just fine except the game plays normally. So the problem has to be in the top four lines of code.

[Hacc]

That's good to hear. The code won't work without lines 2 and 3. They are responsible for executing the code. This is what they are doing in coding:

80056B7C 1D80
80056B7E 0C00

translates to:
80056B7C 0C001D80

then:
80056B7C jal $80007600 (-81247)

jump to address 80007600 and execute subroutine.

Jal = jump and link

Google jal mips