| 전자부품 데이터시트 검색엔진 |
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AT697F 데이터시트(PDF) 80 Page - ATMEL Corporation |
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AT697F 데이터시트(HTML) 80 Page - ATMEL Corporation |
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80 / 155 page ![]() Table 34. Program Counters - PC 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 address[31:0] 0x0000 0000 80 7703C–AERO–6/09 AT697F ADVANCE INFORMATION The 32-bit PC contains the address of the instruction currently being executed by the IU. When a trap occurs, the PC address is saved in the local register (l1). When returning from trap, l1 value is copied back to PC. Table 35. New Program Counters - nPC 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 address[31:0] 0x0000 0004 The nPC holds the address of the next instruction to be executed (assuming a trap does not occur). When a trap occurs, the nPC address is saved in the local register (l2). When returning from trap, l2 value is copied back to nPC. Table 36. Watch Point Address Registers Address : %asr24, %asr26, %asr28, %asr30 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 waddr[29:0] if r/w r r/w xxxx xxxx 0 0 BitNumber Mnemonic Description 31..2 waddr[20:0] Defines the addresses range to be watched 0 if Enable hit generation on instruction fetch 0 = disabled 1 = enabled These registers are accessed using the RDASR/WRASR instructions Table 37. Watch Point Mask registers Address :%asr25, %asr27, %asr29, %asr31 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 wmask[29:0] dl ds r/w r/w r/w xxxx xxxx 0 0 |
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