FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E User Manual
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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
Example:
COPOP #15, #1, CR3, CR4
16-bit data is transferred through the bus to the coprocessor indicated by channel number 15.
Assuming that the coprocessor indicated by channel 15 is a single-precision
floating-decimal calculation unit, the coprocessor command "CC" set as shown in Table 7.116-1
will have the following effect on coprocessor operation.
Table 7.116-1 Conditions for Coprocessor Command "CC" (COPOP)
CC
Calculation
00
Addition CRi + CRj
→ CRi
01
Subtraction CRi – CRj
→ CRi
02
Multiplication CRi × CRj
→ CRi
03
Division CRi ÷ CRj
→ CRi
Other
No operation
MSB
LSB
0
0
0
0
0
0
0
1
0
0
1
1
0
1
0
0
CR3
C 0 0 0 0 0 0 0
( - 1 x 2
0
)
CR3
C 0 0 0 0 0 0 0
CR4
4 0 8 0
0 0 0 0
( 2 x 2
0
)
( 3 x 2
0
)
CR4
4 0 C 0 0 0 0 0
(Coprocessor register)
(Coprocessor register)
Before execution
After execution
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