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IBEQ – Increment first operand and branch (to second operand) if zero.
IBNE – Increment and branch if not zero.
DBEQ – Decrement and branch if zero.
DBNE – Decrement and branch if not zero.
These instructions can either increment or decrement a register (usually used as a loop counter) and then conditionally branch depending on the value in the modified register. These instructions work with all registers.
Example: IBEQ A,DONE