Hi

The function unsigned char ValidateLUT ( void ) is in a different code bank.

For the statement:
return ( ValidateLUT ( ) ) ;

the RC51 compiler (3.08.10.0309) generated this code:

00B6 020000 R LJMP ValidateLUT
00B9 ?NXT25:
00B9 22 RET

Will the linker handle this correctly, i.e. replace the LJMP with a call to bank switching code?

When I spotted this, I felt happier to replace my code with:

Result = ValidateLUT ( ) ;
return (Result);

which generated the following code:

00B6 120000 R LCALL ValidateLUT
00B9 8F00 R MOV Result,R7
00BB ?NXT25:
00BB 22 RET

Was I worrying unnecessarily?

Thanks.

Damien