Constant arrays PCWH 18F2620

[Nigel E]

I am having trouble with generating a const array of int8 in PCH for the 18F2620. Is there a limitation on array size ie is it an 8 bit or other function?

If I declare int8 const array[1024]={d,d,d,d,d,....d}; then it compiles fine but: 1) a constant [index] to this array yeilds value [index+1] : 2) a computed index e.g. [a*b] yeilds a totally different result - the correct one if the result is <255.

Is there a better or alternative way of generating a large i.e. 1k to 4k lookup table as a work around - can the compiler generate large arrays - It works fine with RAM arrays but then there is never enough of that on the devices !!! :-)) hint hint Microchip!

[Ttelmah]

Of course it'll yield index+1. C uses zero referenced arrays. The first entry in a C array is entry 0.

What are the 'types' of 'a', and 'b'?. Remember that if you multiply two integers (which default to 8 bits), you will be using 8bit arithmetic.
If you want to access an element using a computed result from integers, then force them to be treated as int16. So
array[(int16)a*(int16)b]

will force 'a' and 'b' to be converted into longs before the arithmetic, and then the arithmetic will be performed in int16.

Best Wishes