Mitsubishi M16C/60 Series Software Manual page 43

Chapter 2 Addressing Modes
Stack pointer relative
dsp:8[SP] The address indicated by the content of stack
pointer (SP) plus the value indicated by
displacement (dsp)—added including the sign
bits—constitutes the effective address to be
operated on. The stack pointer (SP) here is
the one indicated by the U flag.
However, if the addition resulted in exceeding
00000 - 0FFFF
16
ignored, and the address returns to 00000
or 0FFFF
16
This addressing can be used in MOV
instruction.
, the bits above bit 17 are
16
.
2.3 General Instruction Addressing
If the dsp value is negative
dsp
Register
SP
address
16
dsp
If the dsp value is positive
26
Memory