SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Branch Using NMI Return Pointer
BNRP
Functional unit = D
16 bit
15 | 14 | 13 | 12 | 11 | 10 | 9 | 0 |
x | x | x | x | x | x | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
opcode |
Performs an unconditional branch to the address in the nonmaskable interrupt return pointer register (NRP). The content of NRP is treated as a halfword address. The IER1 is set to 1 upon executing this instruction. The shadow control status register (SCSR) content is copied back to the control status register (CSR) as a result of this instruction.
This instruction has one delay slot. Only a NOP instruction is supported in a BNRP delay slot.
For context restore: CSR = NMISCSR
PC = *NRP
CSR = NMISCSR