Hi all.
I want to be able to run one app from another. I know this is possible with built in apps via syscalls such as as APP_FINANCE but what about other addins?
If there isn't a syscall for this would it be possible to directly load the program into memory?
Yes, there is! Use Syscall 0x1E5B: int OpenAddin(0, 0, index, 0), where index is the index of that app on the main menu. Have a read through my C equivalent if you want to try and figure out what the three zeroes mean:
https://bible.planet-casio.com/drcarlos/Syscalls/OpenAddin.c
Also note that I've only tested it on OS 3.60, so if you want to run it on a newer OS I can't guarantee anything.
Nice. What other functions from
https://bible.planet-casio.com/drcarlos/Syscalls/ do I need to include to get OpenAddin to compile?
Sorry, I didn't explain that very well.
You need to use Syscall 0x1E5B. Here is an example program which should open the 7th addin on the menu:
Code:
int OpenAddin(int zero1, int zero2, unsigned short index, int zero3);
__asm__(".text; .align 2; .global _OpenAddin; "
"_OpenAddin: mov.l sc_addr, r2; mov.l OpenAddin_Number, r0; "
"jmp @r2; nop; "
"OpenAddin_Number: .long 0x1e5b; "
"sc_addr: .long 0x80020070");
int main(void) {
OpenAddin(0, 0, 6, 0); // Index starts at 0, so 7th item is 6
return 0;
}
If you want to investigate the internal workings of this function, you can check out https://bible.planet-casio.com/drcarlos/Syscalls/OpenAddin.c
The referenced functions are all either located in https://bible.planet-casio.com/drcarlos/Syscalls/ or will require using a disassembler to investigate personally.
Let me know if you have any issues.
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