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MATHS CO-PROCESSOR REFERENCE->FDBGE

FDBGE      Test if Greater than or Equal, Decrement and Branch

If Greater than or Equal then no operation,
else Dn - 1 -> Dn then if Dn not equal to -1 PC + d -> PC
else execute next instruction

Assembler Syntax: FDBGE Dn,<label>

Attributes: Unsized