Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario Pagina 43

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Chapter 2 Addressing Modes
address
address
Address register relative
dsp:8[A0]
dsp:8[A1]
dsp:16[A0]
dsp:16[A1]
dsp:8[SB]
dsp:16[SB]
SB relative
FB relative
dsp:8[FB]
The value indicated by displacement
(dsp) plus the content of address
register (A0/A1)added not including
the sign bitsconstitutes the effective
address to be operated on.
However, if the addition resulted in
exceeding 0FFFF16, the bits above bit
17 are ignored, and the address
returns to 0000016.
address
dsp
dsp
FB
SB
dsp
The address indicated by the content
of frame base register (FB) plus the
value indicated by displacement
(dsp)added including the sign bits
constitutes the effective address to be
operated on.
However, if the addition resulted in
exceeding 0000016- 0FFFF16, the bits
above bit 17 are ignored, and the
address returns to 0000016 or
0FFFF16.
Memory
address
A0 / A1
If the dsp value is negative
If the dsp value is positive
dsp
Register
Memory
Register
Memory
Register
2.3 General Instruction Addressing
address
The address indicated by the content
of static base register (SB) plus the
value indicated by displacement
(dsp)added not including the sign
bitsconstitutes the effective address
to be operated on.
However, if the addition resulted in
exceeding 0FFFF16, the bits above bit
17 are ignored, and the address
returns to 0000016.
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