At 04:19 PM 2/19/2006 +0000, you wrote:


>ok, now assuming we have LAT to solve the issue, what do we need
>to do with LAT register, should be use BSF PORTA,0 or BSF LATA,0

The LATter.  You still need the PORTA address for reading the input pins.

Note that LAT isn't really a new register, it's just a new address which
maps to the outputs of the port latch (which was always there).

>also, am I correct to say that LAT is only important for output pins

Yes, and only for RMW instructions (writing the entire port is not
problematic either way).

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
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