User guide

SmartBook for Renesas R8C/Tiny Microcontrollers

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3.12 String Move Forward (SMOVF):

This instruction transfer a data string from a 20 bit source address to a 16 bit

destination address by successively incrementing the address. The transfer

continues till the count in R3 comes down to zero.

A single move operation consumes five clock cycles.

3.13 Save Multiple Registers (PUSHM):

This instruction becomes handy and helpful when

managing interrupts. When you need to manage

more interrupts, you need to spend lots of code

space and time in saving and retrieving contents

of the important registers very often. To save

you from the repeated task of doing this, the

SMOVF

instruction trans-

fer a data string from

a 20 bit source address to

a 16 bit

destination

address by

successively

incrementing the

address.