Placing arrays in ROM, instead of RAM?

[Michael Valencia]

Hello,

I created an array around 70 bytes in size, using the following declaration:

byte my_array[]= {1,2,3,4,...}

I believe it is placed in RAM. Since I will not be modifying this array, and rather keeping it "constant", is there a way I can tell the CCS compiler that I want it to reside in ROM instead of using up RAM? I remember back in my assembly programming days, I can use the instruction "RETLW 0x23" to burn in 0x23 at that place in ROM.

Basically, what i'm asking is how to put a constant lookup table in program memory's (?) ROM, using CCS #directives.
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This message was ported from CCS's old forum
Original Post ID: 144515906

[john cutler]

look at page 214 of the current manual !
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This message was ported from CCS's old forum
Original Post ID: 144515907

[Darren Logan]

Watto!

this...

byte const defaults[17]={1,1,1,1,1,37,3,0,0,115,120,29,0,10,0,0,143};

...does go into ROM automatically.

Regards,
Darren
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This message was ported from CCS's old forum
Original Post ID: 144515913

[Michael Valencia]

I see what I did wrong. For one thing, I didn't read the manual from cover to cover, AND...I didn't put the "const" in the declaration.
Thanks guys.


:=Watto!
:=
:=this...
:=
:=byte const defaults[17]={1,1,1,1,1,37,3,0,0,115,120,29,0,10,0,0,143};
:=
:=...does go into ROM automatically.
:=
:=Regards,
:=Darren
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This message was ported from CCS's old forum
Original Post ID: 144515916