Conditional relative branch. Tests the Zero Flag (Z) and branches relatively to PC if Z is cleared. If the instruction is executed immediately after any of the instructions CP, CPI, SUB, or SUBI, the branch will occur if and only if, the unsigned or signed binary number represented in Rd was not equal to the unsigned or signed binary number represented in Rr. This instruction branches relatively to PC in either direction (PC - 63 ≤ destination ≤ PC + 64). Parameter k is the offset from PC and is represented in two’s complement form. (Equivalent to instruction BRBC 1,k.)
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Operation: |
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(i) |
If Rd ≠ Rr (Z = 0) then PC ← PC + k + 1, else PC ← PC + 1 |
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Syntax: |
Operands: |
Program Counter: |
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(i) |
BRNE k |
-64 ≤ k ≤ +6 |
PC ← PC + k + 1 PC ← PC + 1, if condition is false |
16-bit Opcode:
| 1111 | 01kk | kkkk | k001 |