Table 2.5 lists the SH7709S instruction code formats.
Table 2.5 Instruction Code Format
Item
Format
Explanation
Instruction
mnemonic
OP.Sz SRC,DEST OP: Operation code
Sz: Size
SRC: Source
DEST: Destination
Rm: Source register
Rn: Destination register
imm: Immediate data
disp: Displacement
Instruction
code
MSB ↔ LSB
mmmm: Source register
nnnn: Destination register
0000: R0
0001: R1
...........
1111: R15
iiii: Immediate data
dddd: Displacement
*
Operation
summary
→, ←
(xx)
M/Q/T
Direction of transfer
Memory operand
Flag bits in SR
&
|
^
~
Logical AND of each bit
Logical OR of each bit
Exclusive OR of each bit
Logical NOT of each bit
n-bit shift
<<n, >>n
Privileged
mode
Indicates whether privileged mode applies
Execution
cycles
Value when no wait states are inserted
The execution cycles listed in the table are minimums. The
actual number of cycles may be increased in cases such as
the followsing:
1. When contention occurs between instruction fetches and
data access
2. When the destination register of the load instruction
(memory → register) and the register used by the next
instruction are the same
T bit
Value of T bit after instruction is executed
—: No change
Note: * Scaling (×1, ×2, ×4) is performed according to the instruction operand size.
Rev. 5.00, 09/03, page 38 of 760
RENESAS [ RENESAS TECHNOLOGY CORP ]
