SH7730 Datasheet, PDF (10/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

5.2.2 Exception Event Register (EXPEVT)......................................................................... 95
5.2.3 Interrupt Event Register (INTEVT)............................................................................ 96
5.2.4 Non-Support Detection Exception Register (EXPMASK) ......................................... 97
5.3 Exception Handling Functions............................................................................................ 99
5.3.1 Exception Handling Flow ........................................................................................... 99
5.3.2 Exception Handling Vector Addresses ....................................................................... 99
5.4 Exception Types and Priorities ......................................................................................... 100
5.5 Exception Flow................................................................................................................. 102
5.5.1 Exception Flow......................................................................................................... 102
5.5.2 Exception Source Acceptance .................................................................................. 104
5.5.3 Exception Requests and BL Bit ................................................................................ 105
5.5.4 Return from Exception Handling.............................................................................. 105
5.6 Description of Exceptions................................................................................................. 106
5.6.1 Resets........................................................................................................................ 106
5.6.2 General Exceptions................................................................................................... 108
5.6.3 Interrupts................................................................................................................... 124
5.6.4 Priority Order with Multiple Exceptions .................................................................. 125
5.7 Usage Notes ...................................................................................................................... 127
Section 6 Floating-Point Unit (FPU)................................................................. 129
6.1 Features............................................................................................................................. 129
6.2 Data Formats..................................................................................................................... 130
6.2.1 Floating-Point Format............................................................................................... 130
6.2.2 Non-Numbers (NaN) ................................................................................................ 133
6.2.3 Denormalized Numbers ............................................................................................ 134
6.3 Register Descriptions........................................................................................................ 135
6.3.1 Floating-Point Registers ........................................................................................... 135
6.3.2 Floating-Point Status/Control Register (FPSCR) ..................................................... 137
6.3.3 Floating-Point Communication Register (FPUL) ..................................................... 140
6.4 Rounding .......................................................................................................................... 141
6.5 Floating-Point Exceptions................................................................................................. 142
6.5.1 General FPU Disable Exceptions and Slot FPU Disable Exceptions ....................... 142
6.5.2 FPU Exception Sources ............................................................................................ 142
6.5.3 FPU Exception Handling .......................................................................................... 143
6.6 Graphics Support Functions.............................................................................................. 144
6.6.1 Geometric Operation Instructions............................................................................. 144
6.6.2 Pair Single-Precision Data Transfer.......................................................................... 145
Rev. 1.00 Sep. 19, 2007 Page x of xlviii