ROM coding

[ktkoota]

Hi,
I have pic18f2420, if I want to write a code on the ROM not RAM what setting in the code are requirede?

Regards,
KtKoota

 

[blueroomelectronics]

Code is always in ROM on a PIC

 

[jimlovell777]

I'll assume you meant a variable and not code. To help in that respect your programming language and complier need to be known.

 

[ktkoota]

what do you mean by

To help in that respect your programming language and complier need to be known.

 

[jimlovell777]

What programming language are you using? What compiler are you using?

 

[ktkoota]

C language.. PICC18.exe
I want to enter a table for months and days and I want them to be in Ram.. is there a specific way for this?

 

[Pommie]

C language.. PICC18.exe
I want to enter a table for months and days and I want them to be in Ram.. is there a specific way for this?

In you first post you stated ROM and now you state RAM.

To put a table in ROM you do,

const rom unsigned char month[12]={
    31,28,31,30,31,30,31,31,30,31,30,31
};

Mike.

 

[ktkoota]

yeah it was a mistake I meant ROM..
you mean I have just to add (const rom unsigned char ) for any variable to be in rom?

Regards,
Ktkoota

 

[Pommie]

If you want it to be an unsigned char then, yes. If you want bigger variables then change it appropriately.

Mike.