Hex editing help

That's kinda creepy that you kept an exact number. (Is it an exact number?)

Anywho, hex is easy to learn. It is merely a system of counting. Here is a mini conversion list from base 10 to hex. (base 16)

0 = 00
1 = 01
2 = 02
3 = 03
4 = 04
5 = 05
6 = 06
7 = 07
8 = 08
9 = 09
10 = 0A
11 = 0B
12 = 0C
13 = 0D
14 = 0E
15 = 0F
16 = 10
17 = 11
18 = 12
19 = 13
20 = 14
21 = 15
22 = 16

and so forth and so on...



And it continues up until FF which is 255 (or is it 256?) Anywho, you get the basic gist of it. The real trick is figuring outthe values you want and that is something I cannot help with.

 

'kay. To learn hex, Visual C++ 6.0 or Visual C# are the best for it. Hex editing is difficult, so try to keep it very simple and use a very good hacking guide.

Good hacking websites...

http://www.shacnet.com/

http://sonicology.fateback.com/

Yup. I don't know many more websites.

Yeah, that is pretty scary that you kept track, though.

If you really need help, PM me. I'm pretty good at that.

 

Hex Math Formula, if you want to convert it on paper

Base10 = Val * (16 ^ (p-1))

Where

Val = the numerical value of the first hex number
p = the placement in the entire hex string

and the number to the farthest right is just it's value not through the formula.

Example:

to convert 'FCFC'

1. F - 15 * (16^(4-1)) = 61440
2. C - 12 * (16^(3-1)) = 3072
3. F - 15 * (16^(2-1)) = 240
4. C - 12 = 12

FCFC = 64764

Alternatively, you can do what I do and use Calculator, as it comes free with any Windows OS.

 

The Sonic 2 ROM does not contain the offset of 1B8A04.

 

Learning what each Hex Digit Does is the hard part. The converting Hex to Binary, Hex to Decimal, and such, is easy. I learned Octal for the heck of it, too. Might be useful, someday. :P

 

Hex editors only seem to search/"go to" just right when your query contains an even amount of digits. If you have an odd number, you'll have to stick a 0 at the beginning of it to get it to work. That may be your problem.

You could also try Hex Workshop, but it's 30-day shareware. I daresay there's a keygen floating around, though...

 

Could I have a copy of that rom/savestate? If it is as I am imagining it to be it looks really dang cool.

 

Could I have it too, it sounds interesting...

 

Aww, shame. Ah well.

PS. Emerl is missing from your signature...

 

um so you mean that there is a limit to how many images you can put in your sig then? oh and they're in the wrong order