Guide To This Chapter - Renesas R8C/Tiny Series Software Manual

Chapter 2 Addressing Modes

2.2 Guide to This Chapter

The following shows how to read this chapter using an actual example.
(1)
Address register relative
dsp:8[A0]
(2)
dsp:8[A1]
dsp:16[A0]
dsp:16[A1]
(3)
(4)
(1) Name
Indicates the name of addressing.
(2) Symbol
Represents the addressing mode.
(3) Explanation
Describes the addressing operation and the effective address range.
(4) Operation diagram
Diagrammatically explains the addressing operation.
The value indicated by displacement
(dsp) plus the content of address
register (A0/A1)—added not includ-
ing the sign bits—constitutes the
effective address to be operated on.
However, if the addition resulted in
exceeding 0FFFF , the bits above
16
bit 17 are ignored, and the address
returns to 00000 .
16
Register
A0 / A1 address
23
2.2 Guide to This Chapter
Memory
dsp