Mapping an LCD to PORTA on a 18F2520 using #byte command...?

[SC]

Is there any reason why an LCD should not be overlayed to PORT A on a 18F2520?

In the driver file LCD.C, the LCD is always mapped to either PORT B or PORT D using the #byte lcd = 0xF81 or #byte lcd = 0xF83 command which I understand. I have succesfully mapped the LCD to PORT B on a 16F648 device, but now I want to map the LCD to PORT A on a 18F2520 device using #byte lcd = 0xF80; however I cannot get it to work....Any ideas - am I missing something?

Thanks,
Spero Colyvas

[Ttelmah]

Beware that the A4 line on many PIC's, does not have any drive 'upwards'. If used as an output, it needs a pull-up resistor added.

Best Wishes

[future]

I map it like this