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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD64 датащи(PDF) 46 Page - NEC |
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UPD64 датащи(HTML) 46 Page - NEC |
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46 / 68 page  46 µPD63, 63A, 64 STTS #data4 <1> Instruction code : 0 00111000 1 : 0 00000 d3 d2 d1 d0 <2> Cycle count : 1 <3> Function : if statuses match F ← 1 else F ← 0 Compares the S0, S1, KI/O, KI, and TIMER statuses with the immediate data contents. If at least one of the statuses coincides with the bits that have been set, the status flag F is set (to 1). If none of them coincide, the status flag F is cleared (to 0). SCAF (Set Carry If ACC = FH) <1> Instruction code : 1 10101001 1 <2> Cycle count : 1 <3> Function : if A = 0FH CY ← 1 else CY ← 0 Sets the carry flag CY (to 1) if the accumulator contents are FH. The accumulator values after executing the SCAF instruction are as follows: Accumulator Value Carry Flag Before execution After execution ×××0 0000 0 (clear) ××01 0001 0 (clear) ×011 0011 0 (clear) 0111 0111 0 (clear) 1111 1111 1 (set) Remark ×: don’t care NOP <1> Instruction code : 0 00000000 0 <2> Cycle count : 1 <3> Function : PC ← PC + 1 No operation |
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