Motorola CPU32 Reference Manual page 324

M68300 series central processor unit
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Result Data:
The "command complete" response ($OFFFF) is loaded into the serial shifter
after negation of RESET.
7.2.8.15 No Operation (NOP)
NOP performs no operation and may be used as a null command where
required.
Command Format:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
0
o
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
I
0
Command Sequence:
Operand Data:
None
Result Data:
The "command complete" response ($OFFFF) is returned during the next shift
operation.
E
7.2.8.16 Future Commands
Unassigned command opcodes are reserved by Motorola for future expansion.
All unused formats within any revision level will perform a NOP and return the
ILLEGAL command response.
CPU32 REFERENCE MANUAL
DEVELOPMENT SUPPORT
MOTOROLA
7-31

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