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SH7730 Datasheet(PDF) 10 Page - Renesas Technology Corp |
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SH7730 Datasheet(HTML) 10 Page - Renesas Technology Corp |
10 / 1188 page Rev. 1.00 Sep. 19, 2007 Page x of xlviii 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 |
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