how to place larger arrays linear in RAM

rolox · Joined: 25 Dec 2014 Posts: 33

Hi,
i have several arrays of structs in my prog (PIC18) like this f.e.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Use #locate.
http://www.ccsinfo.com/forum/viewtopic.php?t=54930&highlight=locate+struct

Ttelmah · Joined: 11 Mar 2010 Posts: 19451

Though really, on a PIC18, you should not have to worry.

Splitting basically only takes place on PIC16's, where the memory is segmented. On these you have banks, each of which has processor registers, then user RAM. So an array may (sometimes may _have_) to be split. 'Have', because on most chips the blocks of user RAM in a bank are small like 96 bytes.

On a PIC 18, the configuration is fundamentally different, with all the processor registers up at the top of memory, and the RAM below being a single addressable 'lump'.

Generally (unless memory is running very low), CCS will put any normal array on a PIC18 or later as a continuous lump. Smile

rolox · Joined: 25 Dec 2014 Posts: 33

thx to both.
In fact i started the project with a 16F1788 and had this issue with "segmentation" before , meanwhile switched to a 18F26K20 ...
greetings
roland