Table of Contents
xx MIPS R4000 Microprocessor User's Manual
7
Floating-Point Exceptions
Exception Types........................................................................................................188
Exception Trap Processing......................................................................................189
Flags ...........................................................................................................................190
FPU Exceptions.........................................................................................................192
Inexact Exception (I)............................................................................................192
Invalid Operation Exception (V)........................................................................ 193
Division-by-Zero Exception (Z).........................................................................194
Overflow Exception (O)......................................................................................194
Underflow Exception (U).................................................................................... 195
Unimplemented Instruction Exception (E) ...................................................... 196
Saving and Restoring State .....................................................................................197
Trap Handlers for IEEE Standard 754 Exceptions...............................................198
8
R4000 Processor Signal Descriptions
System Interface Signals..........................................................................................201
Clock/Control Interface Signals ............................................................................203
Secondary Cache Interface Signals........................................................................205
Interrupt Interface Signals ......................................................................................207
JTAG Interface Signals.............................................................................................207
Initialization Interface Signals................................................................................ 208
Signal Summary .......................................................................................................209
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