Rev.1.00 Jan. 10, 2008 Page x of xxx
REJ09B0261-0100
5.2.2 Exception Event Register (EXPEVT)...................................................................91
5.2.3 Interrupt Event Register (INTEVT)......................................................................92
5.2.4 Non-Support Detection Exception Register (EXPMASK)................................... 93
5.3 Exception Handling Functions.............................................................................................95
5.3.1 Exception Handling Flow..................................................................................... 95
5.3.2 Exception Handling Vector Addresses................................................................. 95
5.4 Exception Types and Priorities............................................................................................ 96
5.5 Exception Flow.................................................................................................................... 98
5.5.1 Exception Flow.....................................................................................................98
5.5.2 Exception Source Acceptance............................................................................ 100
5.5.3 Exception Requests and BL Bit.......................................................................... 101
5.5.4 Return from Exception Handling........................................................................101
5.6 Description of Exceptions..................................................................................................102
5.6.1 Resets..................................................................................................................102
5.6.2 General Exceptions.............................................................................................104
5.6.3 Interrupts.............................................................................................................120
5.6.4 Priority Order with Multiple Exceptions............................................................ 121
5.7 Usage Notes....................................................................................................................... 123
Section 6 Floating-Point Unit (FPU).............................................................................. 125
6.1 Features..............................................................................................................................125
6.2 Data Formats......................................................................................................................126
6.2.1 Floating-Point Format.........................................................................................126
6.2.2 Non-Numbers (NaN).......................................................................................... 129
6.2.3 Denormalized Numbers...................................................................................... 130
6.3 Register Descriptions......................................................................................................... 131
6.3.1 Floating-Point Registers..................................................................................... 131
6.3.2 Floating-Point Status/Control Register (FPSCR)............................................... 133
6.3.3 Floating-Point Communication Register (FPUL)............................................... 136
6.4 Rounding............................................................................................................................137
6.5 Floating-Point Exceptions..................................................................................................138
6.5.1 General FPU Disable Exceptions and Slot FPU Disable Exceptions................. 138
6.5.2 FPU Exception Sources...................................................................................... 138
6.5.3 FPU Exception Handling.................................................................................... 139
6.6 Graphics Support Functions...............................................................................................140
6.6.1 Geometric Operation Instructions.......................................................................140
6.6.2 Pair Single-Precision Data Transfer....................................................................141
Section 7 Memory Management Unit (MMU)............................................................ 143
7.1 Overview of MMU............................................................................................................ 144