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UPD64 Scheda tecnica(PDF) 34 Page - NEC |
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UPD64 Scheda tecnica(HTML) 34 Page - NEC |
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34 / 68 page ![]() 34 µPD63, 63A, 64 Branch Instructions Mnemonic Operand Instruction Code Operation Instruction Instruction 1st Word 2nd Word 3rd Word Length Cycle JMP addr (Page 0) E8F1 addr PC ← addr 2 1 addr (Page 1) E9F1 addr JC addr (Page 0) ECF1 addr if CY = 1 PC ← addr addr (Page 1) EAF1 addr else PC ← PC + 2 JNC addr (Page 0) EDF1 addr if CY = 0 PC ← addr addr (Page 1) EBF1 addr else PC ← PC + 2 JF addr (Page 0) EEF1 addr if F = 1 PC ← addr addr (Page 1) F0F1 addr else PC ← PC + 2 JNF addr (Page 0) EFF1 addr if F = 0 PC ← addr addr (Page 1) F1F1 addr else PC ← PC + 2 Caution 0 and 1, which refer to PAGE0 and 1, are not written when describing mnemonics. Subroutine Instructions Mnemonic Operand Instruction Code Operation Instruction Instruction 1st Word 2nd Word 3rd Word Length Cycle CALL addr (Page 0) E6F2 E8F1 addr SP ← SP + 1, ASR ← PC, PC ← addr 3 2 addr (Page 1) E6F2 E9F1 addr RET E8F2 PC ← ASR, SP ← SP – 1 1 1 Caution 0 and 1, which refer to PAGE0 and 1, are not written when describing mnemonics. Timer Operation Instructions Mnemonic Operand Instruction Code Operation Instruction Instruction 1st Word 2nd Word 3rd Word Length Cycle MOV A, T0 FFFF (A) ← (Tn) n = 0, 1 1 1 A, T1 FEFF CY ← 0 T0, A E5FF (Tn) ← (A) n = 0, 1 T1, A F4FF (T) n ← 0 Mnemonic Operand Instruction Code Operation Instruction Instruction 1st Word 2nd Word 3rd Word Length Cycle MOV T, #data10 E6FF data10 (T) ← data10 1 1 T, @R0 F4FF (T) ← ((P13), (R0)) |
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