PS BIOS Editing

PlayStation 1 (PS) BIOS Editing

Hi. How would I go about editing the PlayStation 1 BIOS?

I can dump mine from the Xplorer and re-emulate it in an emulator but how would I go about actually editing it?

Convert it from .BIN to .C or something?? :shrug:

 

It's pretty simple. You just open in it Microsoft Word and change anything you like! Hell, I even booted a few games off an SD card using this method.

 

Clap clap for the smart guy :clap:

 

I'm a gifted coder, I'll have you know*.

*or I will be once I put in a few years studying EE and CS.

 

I get it already. I was just asking if someone knew where to start off. I mean, I converted it from .BIN to the R3000 assembly and a .C file. Useless I think but I just wanted to see what it would do.

I got this from a 1001 BIOS

unsigned char Label[] = {
0x13, 0x00, 0x08, 0x3c, 0x3f, 0x24, 0x08, 0x35,
0x80, 0x1f, 0x01, 0x3c, 0x10, 0x10, 0x28, 0xac,
0x00, 0x00, 0x00, 0x00, 0x88, 0x0b, 0x08, 0x24,
0x80, 0x1f, 0x01, 0x3c, 0x60, 0x10, 0x28, 0xac,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

... many lines

0x49, 0x49, 0x48, 0x88, 0x88, 0xb0, 0x00, 0x01,
0x43, 0x42, 0x40, 0xf2, 0x4a, 0x49, 0x49, 0x49,
0x49, 0x48, 0x88, 0x88, 0xb0, 0x00, 0x00, 0x08,
0x08, 0x7e, 0x08, 0x08, 0x7f, 0x04, 0x04, 0x3e,
0x42, 0x40, 0x40, 0x3c, 0x00, 0x01, 0x0b, 0x0a,
0x7e, 0x08, 0x08, 0x7f, 0x04, 0x04, 0x3e, 0x42};


I actually dont even know what im looking for.

 

There's no easy or quick route around this, no simple answer that anyone here can give you that'll result in you being able to do what you want without significant effort on your part. You need to study the basics, then work your way up.

 

:banghead: looks like I gotta' do it the hard way then

How long is the EECS course? or you dont know...

 

No, I don't know. You have a computer and google is available to you. Go find out yourself how long a computer science or electronic engineering course will take you. That's the whole point; you'll never get there if you expect people to hold your hand the entire way.

I'm done being mean to you for tonight, but I'll say this: you need to get a grip and realise that the stuff you're imagining isn't just out of reach, it's many miles and a lot of very hard work away. You've been told this many times here already, and it doesn't get any less real the more you post. You can't just wing it. Understanding what happens at the metal is not trivial, and can't be broken down into something nice and simple, but unless you know it you won't get anywhere. I'm hopeless at this stuff, but at least I know my limitations and what I'd need to do to improve. I asked for help with a 555 circuit just the other day, for fuck's sake. At least recognise where you are.

 

I think that both of you are being very shortsighted.
Haunted360 should clearly stop at this point, but Alchy you are very wrong about the fact that you need to study a college course to do ROM hacking because it is not true. Most people who ROM hack have no degree and yet most can do it fairly well.
I am self-taught about that as well, do you think that I had to get a degree before writing the PSXSDK? This whole thing "you either have a degree or you don't know anything" is a plague of our days and it is an horrible monopolization of culture by an institution. I'm just finishing high school. Notice that I will go to university, but the presumption many universities or many university students have is sickening.

 

R3000 disassembler?

 

Win2Bin2Src Version 1.0

Copyright 2000 MaSTiCorE


Supposed to convert game .BIN files to .C and .ASM (R3000 assembly). I though why not try the BIOS. lol.

 

Do you mean use a disassembler or the software I used above?

 

I just finished high school

ROM hacking! Thanks. Googled it @ Alchy ;-)


What are you going to study in particular Tails?

 

get IDA pro, learn assembler.

 

Ah, just what I was looking for :love2:

THANK YOU :thumbsup:

 

NOTHING SPECIAL! Just needed a new video to go on my channel and play around with my video editing software more......

http://youtu.be/mmZBl8xatIM

 

Please don't put words in my mouth. Whether self-taught or educated at university, the fact remains that he needs to learn.

 

So how many threads/questions are we now away from realizing the ps hdd?

 

Only a few thousand :Rock:

Dont worry. Slowly getting there... ...

 

Believing is about 1/10000th of the work required to get to the goal here though.