User guide

41
SmartBook for Renesas R8C/Tiny Microcontrollers
www.MightyMicons.com
bit can be located either above or below the address indicated by FB.
When using FLG direct mode, different bits of the flag register can be accessed
for the boolean operations.
With this, we complete our discussion on the instruction set of the R8C/Tiny
microcontrollers. Your attention is drawn towards the versatile and flexible
instruction set of this micon, because this instruction set can be equated to the
vocabulary of the language. With the help of the rich vocabulary, any one can
easily create a classical work without much strain. This applies
well with the instruction set also!!.


 In the SB
relative, the SB
register holds the reference
address to which the base value
is added to point out the target bit
position.


 The FB relative mode is
similar to that of SB relative mode with
a difference. When
using this mode, the
base value is added
with the contents of FB
register taking sign bit
also into account.
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