Fujitsu FR81S User Manual
CHAPTER 3: CPU
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : CPU
FUJITSU SEMICONDUCTOR CONFIDENTIAL
5
Floating Point Operations
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IEEE754 compliant
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Support single precision
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Six exception sources are supported.
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Underflow
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Overflow
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Division-by-zero
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Invalid operation
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Inexact
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Inputs an unnormalized number
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The only rounding mode supported is nearest value
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Denormalized numbers are truncated to 0 or generate an exception
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Floating-point register: 32-bit × 16 sets
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Multiply and Add, Multiply and Sub instructions supported
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Division and square root operations supported
MB91520 Series
MN705-00010-1v0-E
102