HD6417021 Hitachi Semiconductor, HD6417021 Datasheet - Page 49

• Manufacturer Part Number: HD6417021
• Description: SuperH RISC engine
• Manufacturer: Hitachi Semiconductor

Instruction codes, operation, and execution states are listed in the following format in order by
classification.
Table 2.11 Instruction Code Format
Item
Instruction
mnemonic
Instruction
code
Operation
summary
Execution
cycle
T bit
Note: Scaling ( 1, 2, 4) is performed according to the instruction operand size. See
30 HITACHI
"SH-1/SH-2 Programming Manual" for details.
Format
OP.Sz
MSB
(xx)
M/Q/T
&
|
^
~
<<n, >>n
—
,
LSB
SRC,DEST
Explanation
OP: Operation code
Sz: Size
SRC: Source
DEST: Destination
Rm: Source register
Rn: Destination register
imm: Immediate data
disp: Displacement*
mmmm: Source register
nnnn: Destination register
iiii: Immediate data
dddd: Displacement
Direction of transfer
Memory operand
Flag bits in the SR
Logical AND of each bit
Logical OR of each bit
Exclusive OR of each bit
Logical NOT of each bit
n-bit shift
Value when no wait states are inserted
Instruction execution cycles: The execution cycles shown in
the table are minimums. The actual number of cycles may
be increased:
1. When contention occurs between instruction fetches
2. When the destination register of the load instruction
Value of T bit after instruction is executed
No change
and data access, or
(memory
instruction are the same.
0000: R0
0001: R1
1111: R15
...........
register) and the register used by the next