read_program_eeprom problem with big table!!

[cagacug]

Hi to All,

Classical read rom problem!!

Using PIC 16f877, compiler v 3.184.

I have a big lookup table in the rom which I insert it with #ORG and #ROM instructions. The table contains appr. 1300 bytes starting from adress 0x1800.

I read the data with "read_program_eeprom", I use the exact code like this :

temp1 = read_program_eeprom (0x1800 + (cur_chr*5) + cur_col - 1);

which works fine for the first 256 items, but gives unexpected values for the rest. When I change the starting adress of the ROM to something like :

temp1 = read_program_eeprom (0x1900 + (cur_chr*5) + cur_col - 1);

again works for another 256 items but gives unexpected results for the rest. I also tried putting all the adress data to a long variable and then calling the function like:

long adres;
adres = 0x1900 + (cur_chr*5) + cur_col - 1;
temp1 = read_program_eeprom (adres);

, it didnt work.

Anyone have an idea?

Thanks

[Ttelmah]

[cagacug]

Thank you very much , that is the exact problem, and solved.