On Jun 17, 2006, at 11:31 AM, Wouter van Ooijen wrote:

>> Using "return" from a sub routine, will a value put into
>> the "w" register by the subroutine be available to the
>> main program?
>
> on >=14-bit cores: yes
> on 12-bit cores: no
>
14+ bit cores have both a "return" instruction that does not modify the 
W
register and the retlw instruction that loads a constant into W.  The 12
bit cores have ONLY the retlw instruction, so any value explicitly 
loaded
into W will be overwritten by the retlw instruction that does the 
return.

BillW

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