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5.7.3.3 MOVE INSTRUCTION. The MOVE instruction table indicates the number of clock
periods needed for the processor to calculate the destination EA and to perform a MOVE
or MOVEA instruction. For entries with CEA or FEA, refer to the appropriate table to
calculate that portion of the instruction time.
Destination EAs are divided by their formats (see 5.3.4.4 Effective Address Encoding
Summary). The total number of clock cycles is outside the parentheses. The numbers
inside parentheses (r/p/w) are included in the total clock cycle number. All timing data
assumes two-clock reads and writes.
When using this table, begin at the top and move downward. Use the first entry that
matches both source and destination addressing modes.
MOVE
Rn, Rn
MOVE
FEA , Rn
MOVE
Rn, (Am)
MOVE
Rn, (Am)
MOVE
Rn, (Am)
MOVE
Rn, CEA
MOVE
FEA , (An)
MOVE
FEA , (An)
MOVE
FEA , (An)
MOVE
#, CEA
MOVE
CEA , FEA
X = There is one bus cycle for byte and word operands and two bus cycles for long-word
operands. For long-word bus cycles, add two clocks to the tail and to the number of cycles.
= An # fetch EA time must be added for this instruction: FEA
NOTE: For instructions not explicitly listed, use the MOVE CEA , FEA entry. The source
EA is calculated by the calculate EA table, and the destination EA is calculated by
the fetch EA table, even though the bus cycle is for the source EA.
5.7.3.4 SPECIAL-PURPOSE MOVE INSTRUCTION. The special-purpose MOVE
instruction table indicates the number of clock periods needed for the processor to fetch,
calculate, and perform the special-purpose MOVE operation on control registers or a
specified EA. Footnotes indicate when to account for the appropriate EA times. The total
number of clock cycles is outside the parentheses. The numbers inside parentheses
(r/p/w) are included in the total clock cycle number. All timing data assumes two-clock
reads and writes.
MOTOROLA
Freescale Semiconductor, Inc.
Instruction
MC68340 USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
Head
Tail
0
0
0
0
0
2
1
1
2
2
1
3
2
2
2
2
2
2
2
2
2
2
CEA
OPER
Cycles
2(0/1/0)
2(0/1/0)
4(0/1/x)
5(0/1/x)
6(0/1/x)
5(0/1/x)
6(0/1/x)
6(0/1/x)
6(0/1/x)
6(0/1/x)
6(0/1/x)
5- 101
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