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M68HC08 数据表(PDF) 79 Page - Freescale Semiconductor, Inc |
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M68HC08 数据表(HTML) 79 Page - Freescale Semiconductor, Inc |
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79 / 288 page  Central Processor Unit (CPU) MC68HC908BD48 — Rev. 2.1 Data Sheet Freescale Semiconductor Central Processor Unit (CPU) 79 CMP #opr CMP opr CMP opr CMP opr,X CMP opr,X CMP ,X CMP opr,SP CMP opr,SP Compare A with M (A) – (M) –– IMM DIR EXT IX2 IX1 IX SP1 SP2 A1 B1 C1 D1 E1 F1 9EE1 9ED1 ii dd hh ll ee ff ff ff ee ff 2 3 4 4 3 2 4 5 COM opr COMA COMX COM opr,X COM ,X COM opr,SP Complement (One’s Complement) M ← (M) = $FF – (M) A ← (A) = $FF – (M) X ← (X) = $FF – (M) M ← (M) = $FF – (M) M ← (M) = $FF – (M) M ← (M) = $FF – (M) 0–– 1 DIR INH INH IX1 IX SP1 33 43 53 63 73 9E63 dd ff ff 4 1 1 4 3 5 CPHX #opr CPHX opr Compare H:X with M (H:X) – (M:M + 1) –– IMM DIR 65 75 ii ii+1 dd 3 4 CPX #opr CPX opr CPX opr CPX ,X CPX opr,X CPX opr,X CPX opr,SP CPX opr,SP Compare X with M (X) – (M) –– IMM DIR EXT IX2 IX1 IX SP1 SP2 A3 B3 C3 D3 E3 F3 9EE3 9ED3 ii dd hh ll ee ff ff ff ee ff 2 3 4 4 3 2 4 5 DAA Decimal Adjust A (A)10 U– – INH 72 2 DBNZ opr,rel DBNZA rel DBNZX rel DBNZ opr,X,rel DBNZ X,rel DBNZ opr,SP,rel Decrement and Branch if Not Zero A ← (A) – 1 or M ← (M) – 1 or X ← (X) – 1 PC ← (PC) + 3 + rel ? (result) ≠ 0 PC ← (PC) + 2 + rel ? (result) ≠ 0 PC ← (PC) + 2 + rel ? (result) ≠ 0 PC ← (PC) + 3 + rel ? (result) ≠ 0 PC ← (PC) + 2 + rel ? (result) ≠ 0 PC ← (PC) + 4 + rel ? (result) ≠ 0 ––– ––– DIR INH INH IX1 IX SP1 3B 4B 5B 6B 7B 9E6B dd rr rr rr ff rr rr ff rr 5 3 3 5 4 6 DEC opr DECA DECX DEC opr,X DEC ,X DEC opr,SP Decrement M ← (M) – 1 A ← (A) – 1 X ← (X) – 1 M ← (M) – 1 M ← (M) – 1 M ← (M) – 1 –– – DIR INH INH IX1 IX SP1 3A 4A 5A 6A 7A 9E6A dd ff ff 4 1 1 4 3 5 DIV Divide A ← (H:A)/(X) H ← Remainder ––– – INH 52 7 Table 6-1. Instruction Set Summary (Continued) Source Form Operation Description Effect on CCR VH I N Z C |
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