Cirrus Logic EP93xx User Manual

Page 83

DS785UM1

3-13

MaverickCrunch Co-Processor

EP93xx User’s Guide

UFE:

Underflow Trap Enable. Enables/disables software
trapping for IEEE 754 underflow exceptions:
0 = Disable software trapping for underflow exceptions
1 = Enable software trapping for underflow exceptions

OFE:

Overflow Trap Enable. Enables/disables software trapping
for IEEE 754 overflow exceptions:
0 = Disable software trapping for overflow exceptions
1 = Enable software trapping for overflow exceptions

IOE:

Invalid Operator Trap Enable. Enables/disables software
trapping for IEEE 754 invalid operator exceptions:
0 = D is a bl e s o ftw ar e t ra p p in g for inv a li d o p e ra t or
exceptions
1 = E n a b l e s o ft w ar e t r a p p i n g f o r i n v a li d o p e r a t o r
exceptions

IX:

Inexact. Set when an IEEE 754 inexact exception occurs,
regardless of whether or not software trapping for inexact
exceptions is enabled. Writing a “0” to this position clears
the status bit.
0 = No inexact exception detected
1 = Inexact exception detected

UF:

Underflow. Set when an IEEE 754 underflow exception
occurs, regardless of whether or not software trapping for
underflow exceptions is enabled. Writing a “0” to this
position clears the status bit.
0 = No underflow exception detected
1 = Underflow exception detected

OF:

Overflow. Set when an IEEE 754 overflow exception
occurs, regardless of whether or not software trapping for
overflow exceptions is enabled. Writing a “0” to this
position clears the status bit.
0 = No overflow exception detected
1 = Overflow exception detected

IO:

Invalid Operator. Set when an IEEE 754 invalid operator
exception occurs, regardless of whether or not software
trapping for invalid operator exceptions is enabled. Writing
a “0” to this position clears the status bit.
0 = No invalid operator exception detected
1 = Invalid operator exception detected