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AVR32AP Datasheet(PDF) 43 Page - ATMEL Corporation |
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AVR32AP Datasheet(HTML) 43 Page - ATMEL Corporation |
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43 / 181 page  43 32001A–AVR32–06/06 AVR32 3.11.1.23 DTLB Write Protection Exception The DTLB Protection exception is generated when the data memory write violates the access rights specified by the protection bits of the addressed virtual page. RSR_EX = SR; RAR_EX = PC; TLBEAR = FAILING_VIRTUAL_ADDRESS; TLBEHI[VPN] = FAILING_PAGE_NUMBER; TLBEHI[I] = 0; SR[R] = 0; SR[J] = 0; SR[M2:M0] = B’110; SR[EM] = 1; SR[GM] = 1; PC = EVBA | 0x40; 3.11.1.24 Privilege Violation Exception If the application tries to execute privileged instructions, this exception is issued. The complete list of priveleged instructions is shown in Table 3-3. When entering the exception routine, the address of the instruction that caused the exception is stored as yhe stacked return address. RSR_EX = SR; RAR_EX = PC; SR[R] = 0; SR[J] = 0; SR[M2:M0] = B’110; SR[EM] = 1; SR[GM] = 1; PC = EVBA | 0x28; |
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