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ST9 데이터시트(PDF) 126 Page - STMicroelectronics |
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ST9 데이터시트(HTML) 126 Page - STMicroelectronics |
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126 / 146 page ![]() 126/146 ST9 USER GUIDE 5.4.3.3.1 Part 2: Interrupt Vector Declaration /* +------------------------------------------------------------+ | PART 2: INTERRUPT VECTOR DECLARATION | +------------------------------------------------------------+ */ ; Interrupt vector definition ; Absolute address 0 is assumed (. == 0x0000) .word __Reset ; address of reset routine .word DIVIDE_BY_ZERO_TRAP_LABEL ; address of the divide by zero ; trap routine .org 0x06 .word 0xffff ;no external watchdog used .rept 126 .word __Default_Interrupt_Handler; default interrupt handler ; routine .endr ; end of macro definition The start-up file defines the reset vector and the divide by zero trap vector. All other vectors are directed to a default interrupt handler. A new vector must be defined for each interrupt routine of the user program. The vector loca- tion must match the corresponding IVR register. Example: .word __Reset ; address of reset routine .word DIVIDE_BY_ZERO_TRAP_LABEL ; address of the divide by zero ; trap routine .org 0x06 .word 0xffff ;no external watchdog used .org 0x56 .word INTSCI_TransmitReady .org 0x100 |
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