App_CheckG3AFilesizeAndChecksum( int addinno );
When an addin is startet, this syscall is used
to check for the filesize stored at offset 0x5C to be equal to the actual
filesize and for the checksum stored at offset 0x20 to be equal to the actual
0x1945: int App_Program( int
P1, int P2 );
The meaning of the arguments is unknown, yet.
The system calls App_Program with P1==1 and P2==0.