Specifications

8–14 Altera Corporation
Nios II Processor Reference Handbook October 2007
beq
beq
branch if equal
Operation: if (rA == rB)
then PC
←
PC + 4 + σ (IMM16)
else PC
←
PC + 4
Assembler Syntax:
beq rA, rB, label
Example:
beq r6, r7, label
Description:
If rA == rB, then
beq transfers program control to the instruction at label. In the
instruction encoding, the offset given by IMM16 is treated as a signed number of bytes
relative to the instruction immediately following
beq. The two least-significant bits of
IMM16 are always zero, because instruction addresses must be word-aligned.
Instruction Type: I
Instruction Fields: A = Register index of operand rA
B = Register index of operand rB
IMM16 = 16-bit signed immediate value
313029282726252423222120191817161514131211109876543210
A B IMM16 0x26