Hacking Sequential codes PSX

[jin299]

I understand man, have you got any ideas how the play as shin bison code for Street fighter Alpha 3 for the psx was hacked?

I was also wondering how the perform instant specials codes was hacked for the game?

[Hacc]

For your first question, enable the code, and look at the before and after values it's writing to the addresses used in the code. Break the code down piece by piece. You can get an explanation and still be lost, if you don't focus and practice an example. Move on when you have it down pat (being able to apply it to other games and get the result you want). You'll be asking the same questions forever, man.

I don't know as I've never used the code. It was probably found by RAM searching only (very possible by comparing a super performed/not performed). Also, as Pyriel mentioned in your Wii thread (and one of the first things I do by just debugging a player code, to find the start of the data), pinpoint the code section for each player and attack it vigorously. You'd be surprised what you find.

[Helder]

I looked at that code to play Shin M.Bison and I tried to dissect it myself and could not figure out how it was made either since it's just regular M.Bison but has the super effects so I figured it must be a flag enable code since he isn't in the character mod list (I Tried every possible value till the game froze).

[Hacc]

I explained to him long ago that was a possible way (force the flag check) of making the S. Bison code. I also suggested debugging a character modifier address (there are about 6. Re-hacked one when I didn't bother to look elsewhere). I know that some moves are also mode-restricted (Juli & Juni's Dramatic Battle mode specials), but can still be executed via a hack (unstable outside of Dramatic Battle mode). I'll post the codes I made, as it was a project (Capcom SF series) I temporarily stopped working on (sort of forgot and when I don't have my controller with me). Those will be easy to understand.

[olala]

ontopic-
...?
offtopic-
i would very apriciated if somedood make a bity guide for any posiblty of char modify method(ive saw many around goglases, but im still need more!), i noy see any on tha gshi wiki. Thankou
dood

[jin299]

Right so hacc by placing a breakpoint on the shin bison code, and looking at the registers the address is being written to in the debugger, I should be able to find the right instruction to change, also would it be right to say that the hacker might have found the code by placing a breakpoint on the character modifier code and found the code in the debugger by backtracking through the character modifier code data?

[jin299]

Helder how do you exactly hack a flag code through ram hacking, without using asm to do so?

[Helder]

Flags are usually either 1 or 0 so you just have to search for different than searches when there is Shin Bison and when there isn't. Flag codes generally are ram codes atleast in my own findings in games but don't assume all games are 1 or 0 some games use the same address and just keep adding to it when a flag is triggered in the game/story.

[jin299]

Right, one thing though I find strange is how the hacker found the flag code for shin bison, even though the hacker can't play as shin bison normally via a character modifier code in order to hack the flag the hacker would of needed to be able to control shin bison which is normally impossible?

[jin299]

Helder I was messing around with Street fighter Alpha 3, ram hacking, and I hacked a player 1 only has to win one round to win the match, I was wondering how would I hack a code that lets player 1 start the fight before the match countdown? also I was trying to hack an unlock all maps code for world tour for the game, but couldn't seem to find the code for some reason?

[Helder]

I don't know about the map code but the start fighting before the announcer says fight or whatever is basically another simple code of either being on or off like the flag of 1 or 0. This should be a constant value while you can move and a different one when the game doesn't allow you to move.

[dlevere]

This is for GameShark, but it may help

Have All Maps
With the all maps, go into the map sceen and bring up the selections of maps and start a unknown search. Once you find a new listed map do a greater than last. And keep doing that, add equal to last to go by it fast, until you come up with it.

Extra Hacking: Complete Map
In some games you will have a map, but it will not be completed. To hack this start an Unknown search. Complete some of the missing sections on the map and do greater than last. Do this as many times as you want and follow it up with equal to last. You will notice you have it when you go into an area you never been in and it does show up on the map.

[jin299]

Helder I tried hacking the start fight before countdown code by searching 0 when standing still at the countdown screen and then searching 1 when the announcer saids fight, but couldn't find the code?

Any ideas? also how would I hack the code using a unknown value, because i tried that by using different searches but still could not find the code?

[Helder]

When the match starts and you can't move do a search and when you can do a different than search, then as long as you're in a round and can move do an equal to search. Do this equal to search on different fights and stages to narrow results down, then wait till you can't move to do a different than search. Rinse Repeat till you have some results.

[jin299]

Helder i found the fight before countdown code, but it's buggy and doesn't work properly for some reason could you check it out for me here's the code 3019D2C3 00FF it's for the american version of the game.