Renesas SH7781 - Manual (Page 10)

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