6.14.1 Description

Conditional relative branch. Tests the Zero (Z) flag and branches relatively to the PC if Z is set. If the instruction is executed immediately after any of the instructions CP, CPI, SUB, or SUBI, the branch will occur only if the unsigned or signed binary number represented in Rd was equal to the unsigned or signed binary number represented in Rr. This instruction branches relatively to the PC in either direction (PC - 63 ≤ destination ≤ PC + 64). Parameter k is the offset from the PC and is represented in two’s complement form. (Equivalent to instruction BRBS 1,k.)

Operation:

(i)

If Rd == Rr (Z == 1) then PC ← PC + k + 1, else PC ← PC + 1

Syntax:

Operands:

Program Counter:

(i)

BREQ k

-64 ≤ k ≤ +63

PC ← PC + k + 1

PC ← PC + 1, if the condition is false

16-bit Opcode:

111100kkkkkkk001