array problems

[Anoni]

Could somebody explain what causes the following:

An array declared as: int8 a[256];

and accessed with a[5] for example returns garbage in some of the project files. I replaced a[5] with *(a+5) and that seemed to fix the problem. In other files in the same project *(a+5) does not work, but a[5] does work. I get no compilation errors and the scope of a[] is maintained properly with #include directives.

Thanks in advance.

[Anoni]

I forgot to mention that I use v4 compiler for PIC18F6527 device.

[PCM programmer]

What's your full compiler version number ? Look at the start of the .LST
file to find it. The .LST file is in your project directory. The version
number is a 4-digit number such as 4.013, or 4.032, or 4.042.

Don't post any numbers that come after the version number.

[Anoni]

v4.042 and I use 16-bit pointers

[PCM programmer]

The PCH compiler always uses 16-bit pointers. You don't need to
specifiy #device *=16 with PCH.

Can you post a small test program that shows the problem ?
Or does the problem only occur with a large program ?

[Anoni]

PCM programmer, I will post test code tomorrow. In mean time I read about XINST fuse setting in another thread. Do you think XINST fuse being programmed can cause the problems above?

Thanks for the quick responses.

[PCM programmer]

I don't know, but it's not supported and it causes erratic operation,
so you need to always disable it.

[Anoni]

Changing XINST to NOXINST solved all problems.

Thank You PCM programmer