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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.10 BGE (Branch Great or Equal: relative if larger than or equal
to Zero)
Execute the next instruction if the logical exclusive-OR for the V and N flags is 1 and the
branch if it is 0. Branch address corresponds to the value of addition between the PC
value (word value) of the next instruction and the value with rel code-extended (word
value).
■ BGE (Branch Great or Equal: relative if larger than or equal to Zero)
Operation
(V) ∀ (N) = 1: (PC) ← (PC) + 2 (Word addition)
(V) ∀ (N) = 0: (PC) ← (PC) + 2 + rel (Word addition)
Assembler format
BGE rel
Condition code (CCR)
+: Changed by executing instruction
-: Not changed
N: Not changed
Z: Not changed
V: Not changed
C: Not changed
Number of execution cycles: 4 (at divergence)/ 2 (at non-divergence)
Byte count: 2
OP code: FE
NZVC
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