Loading 13 bits to PORTD

Bryan · Guest

Hi!
If i load long integer variable to PORTD, which part of byte (upper or lower) will be loaded to PORTD? Thanks in advance.

bryan
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Mark · Joined: 07 Sep 2003 Posts: 2838 Location: Atlanta, GA

Lower byte unless you do something like (int8)(x>>8) where x is a long (16bit).
:=Hi!
:= If i load long integer variable to PORTD, which part of byte (upper or lower) will be loaded to PORTD? Thanks in advance.
:=
:=bryan
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This message was ported from CCS's old forum
Original Post ID: 144516524

Douglas Kennedy · Joined: 07 Sep 2003 Posts: 755 Location: Florida

:=Hi!
:= If i load long integer variable to PORTD, which part of byte (upper or lower) will be loaded to PORTD? Thanks in advance.
:=
:=bryan
A way to find an answer and gain insight is to look at the .lst file which is generated. You'll see which part is moved to portD
when you in c code assign a 16 bit value to an 8 bit port.
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