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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.119 COPSV (Save 32-bit Data from Coprocessor Register to
Register)
Transfers the 16-bit data consisting of parameters "CC", "CRj", "Ri" to the coprocessor
indicated by channel number u4, then on the next cycle loads the data output by the
coprocessor to CPU general-purpose register "Ri".
Basically, this operation transfers data from a register within the coprocessor. The
32-bit data stored in coprocessor register "CRj" is transferred to CPU general-purpose
register "Ri". Note that the actual interpretation of the fields "CC", "CRj", "Ri" is done
by the coprocessor so that the detailed actual operation is determined by the
specifications of the coprocessor.
If the coprocessor designated by the value "u4" is not mounted, a "coprocessor not
found" trap is generated.
However, no "coprocessor error" trap will be generated even if the coprocessor
designated by the value "u4" has generated an error in a previous operation.
The operation of this instruction is basically identical to "COPST", except for the above
difference in the operation of the error trap.
■ COPSV (Save 32-bit Data from Coprocessor Register to Register)
Assembler format: COPSV #u4, #CC, CRj, Ri
Operation: CC, CRj, Ri → Coprocessor on channel u4
CRj → Ri
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 + 2a cycles
Instruction format:
NZVC
––––
MSB LSB
100111111111 u4(n+0)
RiCRjCC(n+2)