Priiloader includes a file called hacks_hash.ini (see the Priiloader
subfolder), which contains a bunch of hacks that Priiloader can apply to the
System Menu. Each hack has a name that is surrounded by square brackets
(like [Name]), and then a bunch of parameters explaining the patch.
The required parameters are minversion= and maxversion=. These two parameters
define which System Menu versions the hack is compatible with. For example,
a hack that only works on 4.1 in all four regions would have the parameters
minversion=448 and maxversion=454.
The parameter amount= is used to contain the amount of patch instructions for
this hack. It is no longer read by current versions of Priiloader, but it
can't hurt to add it anyway.
After the versions and amounts are defined, the hack includes definitions for
the actual data to patch. For each patch, there'll either be an offset=
parameter (in order to patch at a certain memory offset), or a hash=
parameter (in order to search for a certain string and use its location as
an offset). A patch using the hash= parameter is preferred, as it usually
works on multiple versions and not just on one.
The offset or hash parameters look like this: offset=0x81234567 or
hash=0x12345678,0x98765432. The offset parameter would include the patch
at the fixed memory address 0x81234567, and the hash parameter would add the patch
at the RAM address that contains the specified bytes(12 34 56 78 98 76 54 32).
In addition to these parameters, there needs to be a patch= parameter, which
(same syntax as hash=) includes the bytes to write to the found location,
the actual patch data to replace in the system menu RAM.
Optionally, you can also write comments by using # at the start of the line.
An example hack using these parameters could look like this:
[Example Hack]
maxversion=514
minversion=514
amount=2
#Example Comment
hash=0x2c030000,0x48024451
patch=0x2c03ffff,0x48024451,0x4e800020
offset=0x81200000
patch=0x9421ffd0,0x7c0802a6,0x90010034,0x38610008
This results in two patches being applied to a 4.3E system menu.
One at whatever address the hash value is found, and one at the fixed
address 0x8120000.
The current display limit for the hack's name is 39 characters.
If a hack contains the require= parameter, that means it needs another hack
to function. The require= parameter can contain a string identifying the
required hack. The hack that provides the required functionality must then
provide a master= parameter with the same parameter.
This causes the master hack (with the master= parameter) to be hidden from
the hacks menu in Priiloader. It will only be enabled once one of the sub-hacks that requires the master hack to be present is enabled.
This can be useful if you have a hack where a large part is version-independent, but a small additional part is different in each version. You can then create a large hidden master hack with the independent code, and several small sub-hacks for the different System Menu versions that all require different offsets.
An example of that functionality can be found in the [Remove NoCopy Save File Protection] hack:
[Remove NoCopy Save File Protection - Master]
maxversion=518
minversion=416
amount=2
master=SaveFileProtv1
hash=0x3be00001,0x48000024,0x3be00000,0x4800001c
patch=0x3BE00000,0x48000024
hash=0x28000001,0x4082001c,0x80630068,0x3880011c
patch=0x7C000000,0x4182001C
[Remove NoCopy Save File Protection]
maxversion=518
minversion=416
amount=2
require=SaveFileProtv1
hash=0x540007ff,0x41820024,0x387d164a,0x4cc63182
patch=0x7C000000,0x41820024,0x387d164a,0x4cc63182,0x801C0024,0x5400003C,0x901C0024,0x48000018
hash=0x4803e8fd
patch=0x38600001