Title: theory for extending iso file
Post by: JuAn on April 25, 2009, 02:48:17 pm
Post by: JuAn on April 25, 2009, 02:48:17 pm
Ok so i just saw a thread on hex editing and had winhex32 as the editor so i downloaded it and i was seeing the options,tools etc the program gave and i saw this and it said increase/decrease ROM size I hit that and then a screen popped up and told me to enter the value so i did and it extended the size of the file i was using and it said it worked.
has anyone tried this before? does it work?
By the way The editor cant open the iso but it can open bin/iso files within the iso (Ex. world.bin)
I have not tried but anyone who does should make a backup af whatever they are changing
has anyone tried this before? does it work?
By the way The editor cant open the iso but it can open bin/iso files within the iso (Ex. world.bin)
I have not tried but anyone who does should make a backup af whatever they are changing
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Post by: Vanya on April 25, 2009, 03:09:48 pm
Post by: Vanya on April 25, 2009, 03:09:48 pm
A hex editor can increase the size of any file. But it isn't that simple.
Zodiac expanded the ISO so that every job has it's own, uncompressed sprite file, but it was much more complex than simply expanding the image and inserting extra files.
Also, the code in the game doesn't know what to do about offset addresses when expanding without redirecting pointers. That could lead to glitches at best and a full crash at worst.
Zodiac expanded the ISO so that every job has it's own, uncompressed sprite file, but it was much more complex than simply expanding the image and inserting extra files.
Also, the code in the game doesn't know what to do about offset addresses when expanding without redirecting pointers. That could lead to glitches at best and a full crash at worst.
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Post by: JuAn on April 25, 2009, 03:11:36 pm
Post by: JuAn on April 25, 2009, 03:11:36 pm
i was just wondering
so this wont work right?
so this wont work right?
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Post by: Vanya on April 25, 2009, 03:13:08 pm
Post by: Vanya on April 25, 2009, 03:13:08 pm
No. Not without a lot of extra work in ASM.
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Post by: JuAn on April 25, 2009, 03:16:19 pm
Post by: JuAn on April 25, 2009, 03:16:19 pm
what a waste of my time 
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Post by: Vanya on April 25, 2009, 03:19:21 pm
Post by: Vanya on April 25, 2009, 03:19:21 pm
That function was intended for NES ROMs back in the day. Those were easier to deal with and didn't have the sector assignment thing that CD games have..
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Post by: JuAn on April 25, 2009, 03:24:47 pm
Post by: JuAn on April 25, 2009, 03:24:47 pm
I guess but i thought it could work