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MC908QY2CDWE Datasheet(PDF) 68 Page - Freescale Semiconductor, Inc |
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MC908QY2CDWE Datasheet(HTML) 68 Page - Freescale Semiconductor, Inc |
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68 / 184 page  Central Processor Unit (CPU) MC68HC908QY/QT Family Data Sheet, Rev. 5 68 Freescale Semiconductor CLR opr CLRA CLRX CLRH CLR opr,X CLR ,X CLR opr,SP Clear M ← $00 A ← $00 X ← $00 H ← $00 M ← $00 M ← $00 M ← $00 0––0 1– DIR INH INH INH IX1 IX SP1 3F 4F 5F 8C 6F 7F 9E6F dd ff ff 3 1 1 1 3 2 4 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 EOR #opr EOR opr EOR opr EOR opr,X EOR opr,X EOR ,X EOR opr,SP EOR opr,SP Exclusive OR M with A A ← (A ⊕ M) 0–– – IMM DIR EXT IX2 IX1 IX SP1 SP2 A8 B8 C8 D8 E8 F8 9EE8 9ED8 ii dd hh ll ee ff ff ff ee ff 2 3 4 4 3 2 4 5 INC opr INCA INCX INC opr,X INC ,X INC opr,SP Increment M ← (M) + 1 A ← (A) + 1 X ← (X) + 1 M ← (M) + 1 M ← (M) + 1 M ← (M) + 1 –– – DIR INH INH IX1 IX SP1 3C 4C 5C 6C 7C 9E6C dd ff ff 4 1 1 4 3 5 Table 7-1. Instruction Set Summary (Sheet 3 of 6) Source Form Operation Description Effect on CCR VH I N Z C |
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