A CPU Instruction Set Details




Format:

LDCz rt, offset(base)

Description:

The 16-bit offset is sign-extended and added to the contents of general register base to form a virtual address. The processor reads a doubleword from the addressed memory location and makes the data available to coprocessor unit z. The manner in which each coprocessor uses the data is defined by the individual coprocessor specifications.

If any of the three least-significant bits of the effective address are non-zero, an address error exception takes place.

This instruction is not valid for use with CP0.

This instruction is undefined when the least-significant bit of the
rt field is non-zero.

*See the table "Opcode Bit Encoding" on next page, or "CPU Instruction Opcode Bit Encoding" at the end of Appendix A.



Operation:

Exceptions:

TLB refill exception
TLB invalid exception
Bus error exception
Address error exception
Coprocessor unusable exception

Opcode Bit Encoding:



Copyright 1996, MIPS Technologies, Inc. -- 21 MAR 96

Generated with CERN WebMaker
statistics