CPU32+
5-92
MC68360 USER’S MANUAL
MOTOROLA
5.7.2.3 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 CPU32 Reference Manual). 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.
5.7.2.4 SPECIAL-PURPOSE MOVE INSTRUCTION.
The special-purpose MOVE instruc-
tion 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.
Instruction
Head
Tail
Cycles
MOVE
Rn, Rn
0
0
2(0/1/0)
MOVE
FEA
, Rn
0
0
2(0/1/0)
MOVE
Rn, (Am)
0
2
4(0/1/X)
MOVE
Rn, (Am)
+
Rn,
(Am)
Rn,
CEA
FEA
, (An)
FEA
, (An)
+
FEA
,
(An)
#,
CEA
CEA
,
FEA
1
1
5(0/1/X)
MOVE
2
2
6(0/1/X
MOVE
1
3
5(0/1/X)
MOVE
2
2
6(0/1/X
MOVE
2
2
6(0/1/X)
MOVE
2
2
6(0/1/X)
MOVE
2
2
6(0/1/X
MOVE
2
2
6(0/1/X)
X = There is one bus cycle for byte and word operands and two bus cycles for long-word oper-
ands. For long-word bus cycles, add two clocks to the tail and to the number of cycles.
Timing is calculated with the CPU32+ in 16-bit mode.
= An # fetch EA time must be added for this instruction:
FEA
+
CEA
+
OPER
For instructions not explicitly listed, use the MOVE
CEA
,
FEA
entry. The source
table, even though the bus cycle is for the source EA.
EA is calculated by the calculate EA table, and the destination EA is calculated by the fetch EA