FNOP
NO Operation
FNOP
Instruction Format:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
COPROCESSOR
I 1 1 1 0 1 0 0 0 0 0 0 0
ID
0 I 0 I 0 0 O O 0 0 0 0 0 0
0 0 0 0
Instruction Fields:
Coprocessor ID Field u Specifies which coprocessor in the system is to execute this
instruction. Freescale assemblers default to ID = 1 for the FPCP.
NOTE
FNOP uses the same opcode as the FBcc.W <label> instruction, with cc= F
(non-trapping false) and <label>=*+2 (which results in a displacement of
0).
MC68881/MC68882 USER'S MANUAL FREESCALE
4-85
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