Serial Number

[canta fx Profile]

Hi

Is it possible to read the serial number of a fx9860 gII calculator with an Add-In?

Canta

[SimonLothar]

Hi

Is it possible to read the serial number of a fx9860 gII calculator with an Add-In?

Canta

What do you mean? The serial number on the sticker at the calculator's back or the calculator ID?

[canta fx Profile]

What do you mean? The serial number on the sticker at the calculator's back or the calculator ID?

Yes the serial number on the sticker or any other fixed number/code with which you can differ multiple calculators.

[SimonLothar]

What do you mean? The serial number on the sticker at the calculator's back or the calculator ID?

Yes the serial number on the sticker or any other fixed number/code with which you can differ multiple calculators.

That would be the calculator ID, which is 8 bytes starting at 0x8000FFD0.
But there seems to be no relationship between calculator ID and the serial-number on the sticker

[canta fx Profile]

Ok, then the ID is what I was looking for. How can i read the

8 bytes starting at 0x8000FFD0

?

[SimonLothar]

Ok, then the ID is what I was looking for. How can i read the

8 bytes starting at 0x8000FFD0

?

Try something like this
memcpy( (void*)0x8000FFD0, (void*)workbuffer, sizeof( workbuffer ) );

f. i. with
char workbuffer[8]

[gbl08ma Profile Website]

Do you know where one can find such a ID on the Prizm?

[SimonLothar]

Do you know where one can find such a ID on the Prizm?

8 bytes starting at 0x8001FFD0.

[gbl08ma Profile Website]

Thank you! On the emulator those bytes are all set to 0xFF, on my real calculator it really is something more random. This is great for using as a password hash salt in case one wants to develop something password protected in an add-in. Also great for developing serial key systems and limiting add-in execution to a few select calculators, not that I'll be using it that way

[Canta Profile]

ok, that would be great if i had the skills to make it work. How does it work correctly?

Code: Select all

#include "fxlib.h"
#include "stdlib.h"

unsigned int key;
char buffer[3];
char workbuffer[8];
memcpy( (void*)0x8000FFD0, (void*)workbuffer, sizeof( workbuffer ) );

int AddIn_main(int isAppli, unsigned short OptionNum)
{
   sprintf(buffer,"%d",workbuffer);
   locate(1,4);
   Print((unsigned char*)buffer);

    while(1){
        GetKey(&key);
    }

    return 1;
}


Code: Select all

 C2500 (E) Illegal token "("
C2131 (E) No type nor storage class
CC2500 (E) Illegal token "void"
C2500 (E) Illegal token "sizeof"