Rev. 1.50, 10/04, page 368 of 448
Possible Exceptions and Overflow/Underflow Exception Trap Generating Conditions:
• FPU error
• Invalid operation
• Overflow
Generation of overflow-exception traps
FPSCR.PR = 0: FRn and FRm have the same sign and the exponent of at least one value is
H'FE
FPSCR.PR = 1: DRn and DRm have the same sign and the exponent of at least one value is
H'7FE
• Underflow
Generation of underflow-exception traps
FPSCR.PR = 0: FRn and FRm have different signs and neither has an exponent greater than
H'18
FPSCR.PR = 1: DRn and DRm have different signs and neither has an exponent greater than
H'035
• Inexact
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