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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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MC68340 bảng dữ liệu(PDF) 176 Page - Freescale Semiconductor, Inc |
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MC68340 bảng dữ liệu(HTML) 176 Page - Freescale Semiconductor, Inc |
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176 / 441 page  MOTOROLA MC68340 USER’S MANUAL 5- 39 5.5.1 Exception Vectors An exception vector is the address of a routine that handles an exception. The VBR contains the base address of a 1024-byte exception vector table, which consists of 256 exception vectors. Sixty-four vectors are defined by the processor, and 192 vectors are reserved for user definition as interrupt vectors. Except for the reset vector which is two long words, each vector in the table is one long word. Refer to Table 5-16 for information on vector assignment. Table 5-16. Exception Vector Assignments Vector Offset Vector Number Dec Hex Space Assignment 0 0 000 SP Reset: Initial Stack Pointer 1 4 004 SP Reset: Initial Program Counter 2 8 008 SD Bus Error 3 12 00C SD Address Error 4 16 010 SD Illegal Instruction 5 20 014 SD Zero Division 6 24 018 SD CHK, CHK2 Instructions 7 28 01C SD TRAPcc, TRAPV Instructions 8 32 020 SD Privilege Violation 9 36 024 SD Trace 10 40 028 SD Line 1010 Emulator 11 44 02C SD Line 1111 Emulator 12 48 030 SD Hardware Breakpoint 13 52 034 SD (Reserved for Coprocessor Protocol Violation) 14 56 038 SD Format Error 15 60 03C SD Uninitialized Interrupt 16–23 64 92 040 05C SD (Unassigned, Reserved) — 24 96 060 SD Spurious Interrupt 25 100 064 SD Level 1 Interrupt Autovector 26 104 068 SD Level 2 Interrupt Autovector 27 108 06C SD Level 3 Interrupt Autovector 28 112 070 SD Level 4 Interrupt Autovector 29 116 074 SD Level 5 Interrupt Autovector 30 120 078 SD Level 6 Interrupt Autovector 31 124 07C SD Level 7 Interrupt Autovector 32–47 128 188 080 0BC SD Trap Instruction Vectors (0–15) — 48–58 192 232 0C0 0E8 SD (Reserved for Coprocessor) — 59–63 236 252 0EC 0FC SD (Unassigned, Reserved) — 64–255 256 1020 100 3FC SD User-Defined Vectors (192) Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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