Conditional relative branch. Tests the Carry Flag (C) and branches relatively to PC if C is cleared. If the instruction is executed immediately after execution of any of the instructions CP, CPI, SUB, or SUBI, the branch will occur if and only if, the unsigned binary number represented in Rd was greater than or equal to the unsigned 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 0,k.)
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Operation: |
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(i) |
If Rd ≥Rr (C = 0) then PC ← PC + k + 1, else PC ← PC + 1 |
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Syntax: |
Operands: |
Program Counter: |
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(i) |
BRSH k |
-64 ≤ k ≤ +63 |
PC ← PC + k + 1 PC ← PC + 1, if condition is false |
16-bit Opcode:
| 1111 | 01kk | kkkk | k000 |