if I have a port that has only 4 bits, but I am writing 0xFF & 0xF to it. What will happen? Will it truncate the most significant 4 bits or what?
Thanks.
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if I have a port that has only 4 bits, but I am writing 0xFF & 0xF to it. What will happen? Will it truncate the most significant 4 bits or what?
Thanks.
Yes, that expression (masking with 0x0F) will take the bottom 4 bits from the value. Hopefully your port is connected to the 4 least significant bits of the bus – you’ll need to consult the hardware documentation.